阅读说明：本技术 Cni外场无线自动检测设备 (CNI external field wireless automatic detection equipment ) 是由 童大鹏 卢阳 王东 韩奕昕 陈雨 周映 杜增 于 2020-03-30 设计创作，主要内容包括：本发明公开的CNI外场无线自动检测设备,旨在提供一种操作简便、检测效率高的外场检测CNI装置及方法。本发明通过下述技术方案实现：射频信道单元通过将接收信号送入射频信道单元进行处理后送给信号处理单元,将射频已调信号进行AD变换为基带信号,或将基带信号数模DA变换为射频信号,实现各种方式的调制/解调、解扩/解跳、纠错编译码、波束包络处理和时间测量,分配一个或多个特定任务或服务,形成可重构、可配置标准信号的FPGA程序存储空间处理平台,通过加载软件实现不同功能的检测,完成对检测主机自身工作参数和工作状态的控制,以及对被测飞机CNI系统的工作参数和工作状态的控制,显控单元显示用户操作界面和数据监控。(The invention discloses CNI external field wireless automatic detection equipment, and aims to provide an external field CNI detection device and method which are simple and convenient to operate and high in detection efficiency. The invention is realized by the following technical scheme: the radio frequency channel unit sends a received signal to the radio frequency channel unit for processing and then sends the processed signal to the signal processing unit, the radio frequency modulated signal is AD converted into a baseband signal, or the baseband signal is D/A converted into a radio frequency signal, so that various modes of modulation/demodulation, de-spreading/de-hopping, error correction coding and decoding, beam envelope processing and time measurement are realized, one or more specific tasks or services are distributed, a reconfigurable FPGA program storage space processing platform capable of configuring standard signals is formed, detection of different functions is realized by loading software, control of working parameters and working states of a detection host and control of working parameters and working states of a tested aircraft CNI system are completed, and the display control unit displays a user operation interface and data monitoring.)

1. A CNI outfield wireless automatic detection device, comprising: the power supply unit for providing various direct current power supplies required by work for the detection host and the communication management unit comprises a radio frequency channel unit connected with a UV antenna, an L antenna and a K/Ka antenna, and a display and control unit connected through a signal processing unit, and is characterized in that: the radio frequency channel unit receives or transmits radio frequency signals through the antenna to carry out wireless communication with a tested airplane through the assembled antenna, the radio frequency signals are sent to the radio frequency channel unit through different antenna ports to be subjected to up-conversion, down-conversion, amplification, filtering, gain and antenna interface adaptation processing, then the radio frequency signals are sent to the signal processing unit to be processed, a high-precision synchronous system 100MHz clock required by the interior of a detection host is provided, the signal processing unit carries out baseband data processing on the radio frequency signals sent to an AD/DA conversion channel, the radio frequency modulated signals are subjected to analog-to-digital AD conversion to baseband signals, or the baseband signals are subjected to digital-to-analog-to-DA conversion to radio frequency signals, modulation/demodulation, despreading/debounce, error correction coding and decoding, beam envelope processing and time measurement in various modes are realized, one or more specific tasks or services are distributed, The FPGA carries out loading of corresponding function programs according to use conditions, detection of different functions is realized by loading different function software, control of working parameters and working states of a detection host and control of working parameters and working states of a CNI system of a tested airplane are completed, and a display and control unit displays a user operation interface and data monitoring.

2. The CNI outfield wireless automatic detection device according to claim 1, characterized by: the communication management unit comprises an interface unit which is mainly used as a data interaction center between the detection host and the airborne maintenance port, the analysis processing of the control parameters sent by the signal processing unit of the detection host is realized through the interface unit, the control of the airplane function parameters and the acquisition of the measurement results when the airborne functions are received are realized, and the display and control unit which reports the acquired measurement results to the detection host is realized for displaying.

3. The CNI outfield wireless automatic detection device according to claim 1, characterized by: the detection host (201) is externally connected with a detection machine UV antenna (202), a detection machine L antenna (203) and a detection machine K/Ka antenna (204), is externally connected with a detection machine communication management unit (209) through the Ethernet, is connected to a debugging maintenance port of the airplane (205) through the Ethernet, and realizes an airplane-level automatic test loop through the antenna and the Ethernet.

4. A method for wirelessly detecting the CNI system function by using the detection device as claimed in any one of claims 1 to 3, which has the following technical features: the detection host machine carries out wireless on-line communication detection with the UV antenna, the L antenna and the K/Ka functional antenna corresponding to the airplane to be detected through the UV antenna, the L antenna and the K/Ka antenna, and reports the result measured by each function of the airplane to be detected to the communication management unit through the Ethernet; the communication management unit traverses and detects all hardware channels which can be reconstructed by each function of the tested aircraft CNI system according to the radio frequency signals generated by the antennas in different frequency bands, simulates the functional parameters of the tested aircraft CNI system, and controls the test cases of the automatic detection and the tested functions of the full-function full link; the method comprises the steps of carrying out full-flow, full-resource and full-automatic test processing by adopting a UV test mode, an L test mode, an IFF inquiry test mode and an I chain test mode, carrying out comprehensive judgment according to set parameters and measured parameters, automatically judging whether CNI (computer network interface) function hardware resources of a tested airplane are normal or not, reporting to a display and control unit of a detection host by a communication management unit, displaying a test sequence with the function by the display and control unit, and displaying the test sequence on a display interface, thereby realizing full-automatic wireless detection of the CNI function of the tested airplane.

5. A method of wireless detection of CNI system functions according to claim 3, characterized in that: when detecting the UV test mode: the detection host (201) radiates and receives radio frequency signals of the UV function to the outside through the UV antenna (202) of the detection machine, the Ethernet issuing function control parameters are forwarded to the aircraft carrier (205) through the communication management unit (209) of the detection machine, after the function of the configured UV link resource 1 is normal, the aircraft carrier UV antenna (206) is controlled to radiate the outside by radio frequency, and the two stages of UV antennas (202 and 206) are received to realize wireless detection of the UV function; the detection result data is processed uniformly by the detection host (201), and the detection result is stored; and all the airborne UV link resources 1,2 and 3 … N are detected completely, the detection results of all the link resources are uniformly displayed, and then the main display interface is returned.

6. A method of wireless detection of CNI system functions according to claim 3, characterized in that: when detecting the L test mode: the detection host (201) radiates and receives radio frequency signals of a TACAN function to the outside through a detection machine L antenna (203), transmits function control parameters through the Ethernet, a detection machine communication management unit (209) forwards the function control parameters to an airplane (205), controls an airborne L antenna (207) to radiate and receive radio frequency to the outside after the airborne TACAN function is configured to be normal, and realizes wireless detection of the TACAN function through two-stage L antennas (203 and 207); the detection result data is processed uniformly by the detection host (201), and the detection result is stored; and (3) completing detection of all airborne TACAN link resources 1,2 and 3 … N, uniformly displaying detection results of all link resources, and returning to the display main interface.

7. A method of wireless detection of CNI system functions according to claim 3, characterized in that: when the IFF inquiry test mode is detected, the detection host (201) externally radiates and receives radio frequency signals with an IFF inquiry function through the L antenna (203) of the detection machine; the detection host (201) issues function control parameters by using Ethernet, the function control parameters are forwarded to an airborne identification system IFF configured by an airplane (205) through a detection machine communication management unit (209), a response signal is generated for an inquiry signal transmitted by the airplane to detect a target, after the inquiry function is normal, an airborne L antenna (207) is controlled to externally perform radio frequency radiation and reception, and wireless detection of the IFF inquiry function is realized by two-stage L antennas; the detection result data is processed uniformly by the detection host (201), and the detection result is stored; and (4) all the on-board IFFs inquire that all the link resources 1,2 and 3 … N are detected completely, the detection results of all the link resources are uniformly displayed, and then the main display interface is returned.

8. A method of wireless detection of CNI system functions according to claim 3, characterized in that: when detecting the I chain test mode: the detection host (201) radiates and receives radio frequency signals with I chain functions through the detection machine K/Ka antenna (204), the detection host (201) issues function control parameters through the Ethernet and forwards the function control parameters to the airplane (205) through the detection machine communication management unit (209), the airborne K/Ka antenna (208) radiates and receives radio frequency signals outwards, and wireless detection of the I chain functions is achieved through the two-stage K/Ka antenna; and the detection result data is uniformly processed by the detection host, the detection result is stored, all the airborne I-chain link resources 1,2 and 3 … N are completely detected, the detection results of all the link resources are uniformly displayed, and then the display main interface is returned.

9. A method of wireless detection of CNI system functions according to claim 3, characterized in that: selecting a UV test mode on a control interface of a detection host according to a program main interface, judging whether all link resources of the UV function are detected completely, and judging whether the link resource N of the UV function is detected completely if all the link resources of the UV function are detected completely; after the detection of all the UV functional link resources is finished, the detection host displays the detection results of all the UV functional link resources from 1 to N; after the detection of the UV test mode is finished, returning to the program main interface; repeatedly judging whether the UV function link resource N is a receiving test or not and executing a program 1 when the UV function link resource N is the receiving test; the UV functional link resource N is not tested, and the program 2 is executed; until all N link resource detection of the airborne UV function is completed; and storing the receiving and sending test result of the UV function link resource N (N =1,2,3 …), and returning to judge whether all the link resources of the UV function are detected.

10. A method of wireless detection of CNI system functions according to claim 3, characterized in that: selecting an L test mode on a control interface of the detection host according to the program main interface, and judging whether all link resources of the TACAN function are detected completely; if all the link resources of the TACAN function are not detected, judging the onboard orientation or distance test of the link resource N (N =1,2,3 …), and if the onboard TACAN function link resource N is the orientation test, executing a program 3; if the distance of the airborne TACAN functional link resource N is tested, executing a program 4; the TACAN function link resource N azimuth and distance detection result is stored (N =1,2,3 …); if all link resources of the TACAN function are not detected completely, the detection is continued until all N link resources of the airborne TACAN function are detected; after all link resources of the airborne TACAN function are detected, the detection host displays detection results of all TACAN function link resources 1-N; after the detection of the L test mode is finished, returning to the program main interface; selecting an I chain test mode on a control interface of the detection host; judging whether all link resources of the I link function are detected completely; judging whether the link resource N is a receiving test or not when all link resources of the I chain function are not detected (N =1,2,3 …); the I chain function link resource N is used for receiving test and executing a program 5; the I chain function link resource N is not a receiving test, and the program 6 is executed; storing the receiving and sending detection result of the I chain function link resource N (N =1,2,3 …); detecting all link resources of the I-chain function continuously until all N link resources of the airborne I-chain function are detected; after the detection of all the link resources of the I-chain function is finished, the detection host displays the detection results of 1-N of all the link resources of the I-chain function; completing the detection of the I chain test mode, and returning to the program main interface; then according to the program main interface, selecting an IFF inquiry test mode on a control interface of the detection host, judging whether all link resources of the IFF inquiry function are detected completely or not, and executing a program 7 if all link resources of the IFF inquiry function are not detected completely; IFF query function link resource N detection result saving (N =1,2,3 …); detecting all link resources of the IFF inquiry function continuously until all N link resources of the airborne IFF inquiry function are detected; after all link resources of the IFF inquiry function are detected, the detection host displays detection results of 1-N of all link resources of the IFF inquiry function; and the IFF inquires that the test mode detection is finished and returns to the program main interface.

Technical Field

The invention relates to the field of aviation wireless automatic testing, in particular to an aviation electronic integrated communication navigation identification system (CNI) outfield wireless detection device and method based on a software radio architecture and through a wireless technology, a zero intermediate frequency technology and a comprehensive design.

Background

The CNI system has the main tasks of providing Communication, data transmission, radio Navigation, approach landing guidance and friend or foe identification between the airplane and the outside, completing voice/data Communication, Navigation, air traffic management answering, friend or foe identification, sound alarm and self-detection in the airplane, mainly checking whether the CNI system can correctly control various working states of the down-hanging equipment and whether various functions of the down-hanging equipment can normally work or not, providing Communication, Navigation and identification data for pilots, and is an important functional subsystem for ensuring the safety and operation tasks of the airplane. The aviation communication navigation recognition system is the key of the safety and stable operation of an aviation system; in the flight process, once the communication navigation identification frequency is interfered by an external signal, an error or interruption of the receiving of signals between an aircraft system and the ground can be caused, the aircraft deviates from a normal running track, and the safety of people in trip is threatened. The CNI system detection means generally utilizes maintenance self-checking MBIT and is supplemented with an outfield comprehensive inspection instrument to carry out primary maintenance, carries out online detection on the functions and key performances of the CNI system, and isolates and positions faults to an LRM; and in the secondary maintenance, a detection instrument or a comprehensive detection system is adopted to perform off-line detection on all performance indexes of the LRM, and the fault LRM is repaired. However, the existing outfield detecting instrument for first-level maintenance is basically a discrete special detector, has multiple types and large quantity, and has a certain false alarm rate due to the maintenance self-checking MBIT, so that some 'stealth' faults are hidden.

Chinese patent application No. 201821991124.0 (published as 2019, 9 and 3) discloses an outfield simulator consisting of a control panel, an ILS module and an MLS module. The utility model discloses a patent application has integrated ILS external field simulator and MLS external field simulator's function and performance characteristics, can carry out qualitative test to ILS airborne equipment and MLS airborne equipment. The defects are that only ILS and MLS functions are integrated, the integration is not enough, and the complete detection of the CNI system function cannot be achieved; the automatic test can not be carried out, so that a plurality of detection personnel are caused, the test process is complex, and the test efficiency is low.

In order to facilitate the outfield detection of bus data communication conditions of all the drop-off devices in the CNI subsystem and meet the requirements of subsystem maintenance and troubleshooting, from the aspects of hardware, software, structure, electromagnetic compatibility, reliability, maintainability, testability, safety and the like, volume 22 of No. 6 of 3 months of 2014 of electronic design engineering discloses the design of a CNI outfield inspection instrument, the CNI outfield inspection instrument detects the bus data communication conditions of all the drop-off devices in the CNI subsystem and meets the requirements of subsystem maintenance and troubleshooting, and key problems of monitoring analysis software package development and the like in the design are analyzed and solution measures are provided. The application shows that the tester solves the problems that the large data volume of the CNI system is difficult to acquire in real time and the failure reason is difficult to trace, but has the defects that the CNI outfield tester can only monitor and detect the bus signal of the CNI system, detect whether the CNI function is normal or not, and can not perform full-process test on functional link resources from an aircraft antenna, so that the detection result is insufficient and incomplete.

The volume 55 of No. 6 of 6 months of 2015 in telecommunication technology also discloses a design of a comprehensive CNI equipment testing system, the system realizes the modularization of a special simulator by referring to the comprehensive modularization design idea, adopts an expert system to realize automatic testing, improves the built-in fault diagnosis capability through built-in testing (BIT), and realizes the automatic testing of the full-frequency-band coverage of the CNI equipment. The drawback is that the paper implements functions of modular design, each function is a module, and the problems of multiple modules and huge volume and weight exist; meanwhile, the test system still has wired test, and the problem of disassembling the aircraft antenna exists in the use of an external field, which is inconvenient to use; and this complex function cannot be realized for the I-chain function.

Currently, in order to detect whether each function of the aircraft CNI system works normally, special detection equipment is developed for a single function or a few functions, such as a short-wave radio station, an ultra-short-wave radio station, an IFF special exciter, JBM-3, NAV-750, and the like. The detection devices have single detection function, large volume, heavy weight and low degree of integration, so that the types of the detection devices required by the outfield for detecting the CNI function of the airplane are more than ten, the volume and the weight are huge, the operation is complex, and the storage and the use are very inconvenient. Meanwhile, the current detection method for detecting the airplane is still limited to a wired detection method, a manual detection method and an airborne formal waveform detection method, and the wired detection method can cause deviation and long detection occupation time when the airplane structure is disassembled and assembled; the manual testing method has complex and tedious operation, long time consumption and low efficiency; the development and joint test period of the airborne formal waveform test is very long and has a large security risk due to the complex security management flow and the complex protocol waveform. Therefore, there is an urgent need for solving key problems of integration, wireless detection, generalization, portability, incomplete link resource detection, simplified protocol waveform, automatic detection, etc. in order to solve the above problems, it is necessary to develop an aircraft CNI system outfield wireless automatic detection device and detection method, which makes the detection and maintenance work of the aircraft simpler and lower in cost.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the outfield wireless automatic detection equipment of the avionics integrated communication navigation identification system and the method for wirelessly detecting the CNI system function thereof, which have the advantages of few detection personnel, simple and convenient operation, concise display, good consistency of detection results, short detection time and high detection efficiency.

In order to solve the technical problems, the invention is realized according to the following technical scheme: a CNI outfield wireless automatic detection device, comprising: the power supply unit for providing various direct current power supplies required by work for the detection host and the communication management unit comprises a radio frequency channel unit connected with a UV antenna, an L antenna and a K/Ka antenna, and a display and control unit connected through a signal processing unit, and is characterized in that: the radio frequency channel unit receives or transmits radio frequency signals through the antenna to carry out wireless communication with a tested airplane through the assembled antenna, the radio frequency signals are sent to the radio frequency channel unit through different antenna ports to carry out up-down conversion, down-conversion, amplification, filtering, gain and antenna interface adaptation processing, then the radio frequency signals are sent to the signal processing unit to be processed, a high-precision synchronous system 100MHz clock required by the interior of a detection host is provided, the signal processing unit carries out baseband data processing on the radio frequency signals sent to an AD/DA conversion channel, AD conversion is carried out on the radio frequency modulated signals to baseband signals, or digital-to-analog-to-Digital (DA) conversion is carried out on the baseband signals to radio frequency signals, modulation/demodulation, de-spreading/de-hopping, error correction coding and decoding, beam envelope processing and time measurement in various modes are realized, one or more specific tasks or services are distributed, and a reconfigurable FPGA program storage space, the FPGA loads corresponding function programs according to the use condition, the detection of different functions is realized by loading different function software, the control of the working parameters and the working state of the detection host and the control of the working parameters and the working state of a CNI system of the tested airplane are finished, and the display control unit displays a user operation interface and data monitoring.

A method for wirelessly detecting the function of a CNI system by using the outfield wireless automatic detection equipment has the following technical characteristics: the detection host machine carries out wireless on-line communication detection with the UV antenna, the L antenna and the K/Ka functional antenna corresponding to the airplane to be detected through the UV antenna, the L antenna and the K/Ka antenna, and reports the result measured by each function of the airplane to be detected to the communication management unit through the Ethernet; the communication management unit traverses and detects all hardware channels which can be reconstructed by each function of the tested aircraft CNI system according to the radio frequency signals generated by the antennas in different frequency bands, simulates the functional parameters of the tested aircraft CNI system, and controls the test cases of the automatic detection and the tested functions of the full-function full link; the method comprises the steps of carrying out full-flow, full-resource and full-automatic test processing by adopting a UV test mode, an L test mode, an IFF inquiry test mode and an I chain test mode, carrying out comprehensive judgment according to set parameters and measured parameters, automatically judging whether CNI (computer network interface) function hardware resources of a tested airplane are normal or not, reporting to a display and control unit of a detection host by a communication management unit, displaying a test sequence with the function by the display and control unit, and displaying the test sequence on a display interface, thereby realizing full-automatic wireless detection of the CNI function of the tested airplane.

Compared with the prior art, the invention has the following beneficial effects:

aiming at the problems of large size, heavy weight, single test function and various and complex detection equipment required by a test environment in the prior art, the invention realizes the comprehensive design of the detection equipment by utilizing a software radio architecture, a wireless communication technology, a zero intermediate frequency technology and a comprehensive design technical means and through the automatic flow design of a test mode, solves the problems of large size, heavy weight and single test function of the existing detection equipment, eliminates the influence on the disassembly and assembly structure of an airplane, reduces the time for testing and setting up the environment and improves the efficiency of a test system. The wireless detection of the detection equipment is realized by adopting a detection host and a communication management unit of a power supply unit which provides various direct current power supplies required by work, utilizing a radio frequency channel unit comprising a UV antenna, an L antenna and a K/Ka antenna and connecting the detection host of the display control unit through a signal processing unit by a wireless communication technical means, and has the characteristics of integration, no damage to the structure of an airplane, no damage to the appearance, portability and universality; and a series of problems of external field joint test, training, verification and the like are solved.

Aiming at the problems of long deviation and detection occupation time caused by the disassembly and assembly of airplane structures through wired detection, long development and united test period caused by complex airborne password and protocol waveforms, complex operation, long time consumption and low efficiency of a manual test method, the invention adopts the UV antenna, the L antenna and the K/Ka antenna to receive or transmit radio frequency signals and the airplane to be tested to carry out wireless communication through the UV antenna, the L antenna and the K/Ka antenna, the radio frequency signals are sent to the radio frequency channel unit through different antenna ports to carry out up-conversion, down-conversion, amplification, filtering, gain and antenna interface adaptation processing, and then the radio frequency signals are sent to the signal processing unit to be processed, and a high-precision synchronous system 100MHz clock required by the interior of the detection host is provided to assist the field detection personnel of the airplane to carry out full-flow automatic test, detection, distribution and distribution of CNI functions on CNI systems of various airplane models, Troubleshooting and maintenance can be carried out, the functions of the CNI system of the airplane can be wirelessly detected, and the universality is good; the antenna of the outfield airplane does not need to be disassembled, the risk of installation deviation caused by disassembling the structure of the airplane is eliminated, and the nondestructive testing of the function of the CNI system of the airplane is realized; the method has the characteristics of simple and convenient operation, short detection time, good consistency of detection results, concise display, few detection personnel and great improvement on detection efficiency. Through the design of the test mode, the simplification of a functional protocol, a waveform and a password is realized, and the functional development and the joint test period are greatly shortened.

The invention adopts the signal processing unit to carry out baseband data processing on the radio frequency signal sent to the AD/DA conversion channel, carries out AD conversion on the radio frequency modulated signal into a baseband signal, or converting the base band signal DA into a radio frequency signal, realizing modulation/demodulation, de-spreading/de-hopping, error-correcting coding and decoding, beam envelope processing and time measurement in various modes, realizing the allocation of a specific task or service, forming a reconfigurable FPGA program storage space processing platform capable of configuring standard signals, by means of software wireless architecture and comprehensive technology, the UV function, the L-band function, the IFF inquiry function and the I-chain function are realized, the dynamic loading of functional programs is supported, the development design of a plurality of functions can be realized rapidly, the degree of integration is very high, the subsequent upgrade and the development of new functions are well supported, and the expandability is very good.

The invention realizes the detection of different functions by loading different functional software through the FPGA, completes the control of the working parameters and the working state of the detection host and the working parameters and the working state of the CNI system of the tested airplane, can realize the simplification of functional protocols and waveforms, greatly reduces the period of functional development and joint test, and eliminates the risk of secret leakage caused by the problem of confidentiality; the method can automatically test the full-band coverage of the CNI equipment, the fault isolation rate reaches 100%, the method is an effective technical means for verifying the performance of the CNI equipment, and the test mode provides that a simplified waveform signal is used for performing hardware full-resource coverage test on the link resource reconstructed by the function of each airborne CNI system, so that the completeness and the reliability of airplane function detection are improved.

The invention solves the problems of the existing manual wired test, complex and troublesome operation, long time consumption, low efficiency, complex test signal waveform and long algorithm development period by carrying out password simplification, protocol simplification and waveform simplification on the functions and using the simplified signals to carry out traversal detection on all hardware resources which can be reconstructed by each function, reduces the number of testers, reduces the deviation of measurement results caused by the difference of the testers, eliminates the airplane faults caused by the operation problems of the testers, reduces the complexity of the testers on airplane operation, reduces the test time and improves the test efficiency.

The method is suitable for carrying out wireless automatic detection on the functions of the aircraft CNI system in the outfield environment.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of an outfield wireless automatic detection device of the integrated avionics communication navigation identification system of the present invention.

Fig. 2 is a schematic diagram of a system for implementing the function of the wireless detection CNI system by using fig. 1.

Fig. 3 is a sequential schematic broken down by the general flow chart of the test mode of fig. 2.

Fig. 4 is a block diagram of a UV test mode flow of fig. 2.

Fig. 5 is a block diagram of the L test mode flow of fig. 2.

FIG. 6 is a block diagram of the IFF interrogation test mode flow of FIG. 2.

Fig. 7 is a block flow diagram of the I-chain test pattern of fig. 2.

In the figure: 101. the system comprises a power supply unit, 102, a radio frequency channel unit, 103, a signal processing unit, 104, a display control unit, 105, a UV antenna, 106, an L antenna, 107, a K/Ka antenna, 20, a communication management unit, 201, a detection host, 202, a detection machine UV antenna, 203, a detection machine L antenna, 204, a detection machine K/Ka antenna, 205 an airplane, 206 airborne UV antenna, 207, airborne L antenna, 208, airborne K/Ka antenna and 209, a detection machine communication management unit.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The embodiments described in the following examples do not represent all embodiments consistent with the present application, but are merely examples of systems and methods consistent with certain aspects of the present application, as detailed in the claims. In addition, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Detailed Description

See fig. 1. In a preferred embodiment described below, an avionics integrated communication navigation recognition system outfield wireless automatic detection device comprises: the power supply unit of various DC power supplies that the work needs is provided to detection host computer and communication management unit, the detection host computer contains the radio frequency channel unit of connecting UV antenna, L antenna and K/Ka antenna, the demonstration accuse unit through the signal processing unit connection, wherein: the detection main unit comprises a power supply unit 101, a radio frequency channel unit 102, a signal processing unit 103, a display and control unit 104, a UV antenna 105, an L antenna 106 and a K/Ka antenna 107. The power supply unit 101 provides various dc power supplies required for operation for the radio frequency channel unit 102, the signal processing unit 103, and the display control unit 104, and specifically includes: +28V, ± 12V and +5V, and the output power is not less than 200W; the radio frequency channel unit 102 realizes the adaptation and processing of an antenna interface in a frequency band between 2MHz and 31GHz, realizes the up-down frequency conversion, amplification, filtering and gain control of the receiving and transmitting radio frequency signals of a UV wave band, an L wave band and a K/Ka wave band, and can realize the transmission of the radio frequency signals to an AD/DA channel to complete the baseband data processing; and a high-precision synchronous system 100MHz clock required by the interior of the detection host is provided, a time reference is provided for the synchronous work of the system, and the signal output amplitude is 0 +/-3 dBm.

The signal processing unit 103 is used for realizing AD conversion of the radio frequency modulated signal into a baseband signal or DA conversion of the baseband signal into a radio frequency signal, is provided with 8-receiving and 8-transmitting AD and DA conversion channels, and can realize multifunctional signal receiving and transmitting; the functions of modulation/demodulation, despreading/debounce, error correction coding and decoding, beam envelope processing, time measurement and the like in various modes are realized, 256MB FPGA program storage space is maximally provided, and a plurality of versions of functional programs are supported; the control and sound processing of the detection host are realized, the control of the working parameters and working states of the detection host and the control of the working parameters and working states of the airplane can be finished, and the AD/DA conversion of voice receiving and transmitting is realized, so that the processing of external voice call and internal self-listening sound is realized; the method realizes the distribution of one or more specific tasks or services, forms a reconfigurable and configurable standard signal processing platform, can load corresponding functional programs according to the use condition, realizes a set of hardware, and realizes the detection of different functions by loading different functional software.

The display control unit 104 realizes control and display of a user operation interface and mainly comprises a key and a display screen, wherein the key is made of plastic and is manufactured through processes of blow molding, injection molding, compression molding and the like, surface fonts are printed by silk screen, in order to ensure light transmittance, through holes with the diameter of about 0.005mm are formed in the surface of the key font by adopting a laser punching process, and an LED light source on the key circuit board can penetrate through the key layer to ensure that the key is visible at night; the display screen is a 7.67-inch liquid crystal display screen, the display size is 165.12 multiplied by 103.2mm, the maximum resolution is 1280 multiplied by 800, the working temperature is-48.8 ℃ to +70 ℃, the storage temperature is-60 ℃ to +80 ℃, and the brightness is 250cd/m 2.

The antenna mainly comprises a UV antenna 105, an L antenna 106 and a K/Ka antenna 107 which are respectively used for receiving and transmitting UV wave band, L wave band and K/Ka wave band radio frequency signals of the airplane, each antenna is directly connected to an antenna port of the detection host, and after receiving radio frequency signals transmitted by an airplane, the antennas are sent into a radio frequency channel unit of the equipment through different antenna ports to carry out down-conversion and send to a signal processing unit of the equipment for processing, so that basic guarantee is provided for the detection host to realize wireless detection.

The communication management unit comprises an interface unit which is mainly used as a data interaction center between the detection host and the airborne maintenance port, the analysis processing of the control parameters sent by the signal processing unit of the detection host is realized through the interface unit, the control of the airplane function parameters and the acquisition of the measurement results when the airborne functions are received are realized, and the display and control unit which reports the acquired measurement results to the detection host is realized for displaying.

See fig. 2. The detection host 201 can be externally connected with a detection machine UV antenna 202, a detection machine L antenna 203 and a detection machine K/Ka antenna 204, externally connected with a detection machine communication management unit 209 through Ethernet, connected with a debugging maintenance port of the airplane 205 through the Ethernet by the detection machine communication management unit 209, and used for realizing an airplane-level automatic test loop through the antenna and the Ethernet. After receiving radio frequency signals transmitted by a UV antenna, an L antenna and a K/Ka antenna of a CNI system of a tested airplane, the UV antenna, the L antenna and the K/Ka antenna are sent to the radio frequency channel unit through different antenna ports to be subjected to up-down conversion, amplification, filtering, gain and antenna interface adaptation processing, and then sent to the signal processing unit for processing, and a high-precision synchronous system 100MHz clock required in the detection host is provided, the signal processing unit sends the radio frequency signals to an AD/DA conversion channel to complete baseband data processing, and the radio frequency modulated signals are AD converted into baseband signals or DA converted into radio frequency signals to realize modulation/demodulation, de-spreading/de-hopping, error-correction coding and decoding, beam envelope processing and time measurement in various modes, so that one or more specific tasks or services are distributed, the method comprises the steps of forming a reconfigurable FPGA program storage space processing platform capable of configuring standard signals, loading corresponding function programs by the FPGA according to use conditions, realizing detection of different functions by loading different function software, finishing control over working parameters and working states of a detection host and working parameters and working states of a CNI system of a tested airplane, and displaying a user operation interface and data monitoring by a display and control unit.

When detecting the UV test mode: the detection host 201 externally performs radio frequency signal radiation and reception of the UV function through the UV antenna 202 of the detection machine, the Ethernet issued function control parameters are forwarded to the airborne 205 through the communication management unit 209 of the detection machine, after the UV link resource 1 is configured to be normal in function, the airborne UV antenna 206 is controlled to externally perform radio frequency radiation and reception, and wireless detection of the UV function is realized through the two stages of UV antennas (the UV antenna 202 of the detection machine and the airborne UV antenna 206); because the detector UV antenna 202 and the airborne UV antenna 206 are omnidirectional antennas, during actual testing, the detector UV antenna 202 is placed at a position 10-20 meters away from the airborne UV antenna 206 and at a height such that no shielding exists between the UV antennas (the detector UV antenna 202 and the airborne UV antenna 206) according to the installation position of the airborne UV antenna 206; the detection result data is processed uniformly by the detection host 20), and the detection result is stored; and all the airborne UV link resources 1,2 and 3 … N are detected completely, the detection results of all the link resources are uniformly displayed, and then the main display interface is returned.

When detecting the L test mode: the detection host 201 externally performs radio frequency signal radiation and reception of the TACAN function through the L antenna 203 of the detection machine, the Ethernet issuing function control parameters are forwarded to the airborne 205 through the communication management unit 209 of the detection machine, after the airborne TACAN function is configured to be normal, the airborne L antenna 207 is controlled to externally perform radio frequency radiation and reception, and wireless detection of the TACAN function is realized through the two-stage L antennas (the L antenna 203 of the detection machine and the airborne L antenna 207); the detection result data is processed uniformly by the detection host 201, and the detection result is stored; because the L antennas (the detector L antenna 203 and the airborne L antenna 207) are omnidirectional antennas, in actual testing, the detector L antenna 203 of the detection host 201 is placed at a position 15-20 meters away from the airborne L antenna 207 and at a height such that no shielding exists between the L antennas (the detector L antenna 203 and the airborne L antenna 207) according to the installation position of the airborne antenna; all airborne TACAN link resources 1,2 and 3 … N are detected completely, detection results of all link resources are displayed uniformly, and then a display main interface is returned;

when IFF inquiry test mode is detected: the detection host 201 externally performs radio frequency signal radiation and reception of the IFF inquiry function through the L antenna 203 of the detection machine; the detection host 201 forwards the control parameters of the Ethernet down-sending function to the airplane 205 through the detection machine communication management unit 209, and controls the airborne L antenna 207 to perform radio frequency radiation and reception to the outside after the airborne IFF inquiry function is configured to be normal, and the two-stage L antenna (the detection machine L antenna 203 and the airborne L antenna 207) realizes wireless detection of the IFF inquiry function; the detection result data is processed uniformly by the detection host 201, and the detection result is stored; all the airborne IFFs inquire that all the link resources 1,2 and 3 … N are detected completely, detection results of all the link resources are displayed uniformly, and then a display main interface is returned;

when detecting the I chain test mode: the detection host 201 externally radiates and receives radio frequency signals with an I chain function through the detection machine K/Ka antenna 204, the detection host 201 transmits function control parameters to the airborne station 205 through the detection machine communication management unit 209 by Ethernet, the airborne K/Ka antenna 208 externally radiates and receives radio frequency, and wireless detection of the I chain function is realized by two stages of K/Ka antennas (the detection machine K/Ka antennas 204 and 208); because the I-chain antenna is a directional antenna, in actual test, the K/Ka antenna 104 of the detection equipment needs to be aligned to the normal direction of the airborne antenna according to the installation position of each airborne antenna; and the detection result data is uniformly processed by the detection host, the detection result is stored, all the airborne I-chain link resources 1,2 and 3 … N are completely detected, the detection results of all the link resources are uniformly displayed, and then the display main interface is returned.

After the detection is carried out through the process, all the UV link resources, the L link resources, the IFF inquiry link resources and the I link resources which are carried on the airplane and can be reconstructed can be detected, the wireless automatic and rapid detection of the airplane is realized, and the safety and the reliability of the airplane flight are ensured.

See fig. 3. According to the general flow of the test mode, the specific steps are as follows:

s300, programming a main interface;

s301, selecting a UV test mode on a control interface of a detection host;

s302, judging whether all link resources of the UV function are detected completely;

s303, judging whether the UV function link resource N is a receiving test or not when all the UV function link resources are not detected;

s304, executing the program 1 when the UV functional link resource N is used for receiving and testing;

s305, executing a program 2 when the UV functional link resource N is not a receiving test;

s306, storing the UV functional link resource N transceiving test result (N ═ 1,2, and 3 …);

s302, repeating the steps S303-S306 until all the N link resources of the airborne UV function are detected;

s307, after the detection of all the link resources of the UV function is finished, the detection host displays the detection results of all the UV function link resources from 1 to N;

s308, completing the detection of the UV test mode, and returning to the program main interface;

s309, selecting an L test mode on a control interface of the detection host;

s310, judging whether all link resources of the TACAN function are detected completely;

s311, judging that all chain resources of the TACAN function are not detected, and testing the on-board direction or distance of the link resource N (N is 1,2 and 3 …);

s312, if the airborne TACAN functional link resource N is used for azimuth test, executing a program 3;

s313, if the distance of the airborne TACAN functional link resource N is tested, executing a program 4;

s314, saving the TACAN function link resource N direction and distance detection result (N is 1,2,3 …);

s310, repeating S311-S314) steps until all N link resources of the airborne TACAN function are detected;

s315, after the detection of all the link resources of the airborne TACAN function is finished, the detection host displays the detection results of all the TACAN function link resources from 1 to N;

s316, completing the detection of the L test mode, and returning to the program main interface;

s317, selecting an I chain test mode on a control interface of the detection host;

s318, judging whether all link resources of the I link function are detected completely;

s319, determining whether the link resource N is a reception test (N is 1,2, and 3 …) if all the link resources of the I-link function are not detected;

s320, executing a program 5 when the I chain function link resource N is used for receiving a test;

s321, executing the program 6 when the I chain function link resource N is not a receiving test;

s322, storing the transmit-receive detection result of the I-chain functional link resource N (N ═ 1,2,3 …);

s318, repeating the steps S319 to S322 until all N link resources of the airborne I link function are detected;

s323, after the detection of all the link resources of the I-chain function is finished, the detection host displays the detection results of all the link resources 1-N of the I-chain function;

s324, completing detection of the I-chain test mode, and returning to a program main interface;

s325, selecting an IFF inquiry test mode on a control interface of the detection host;

s326, judging whether all link resources of the IFF inquiry function are detected completely;

s327, the IFF inquires that all chain resources of the function are not detected, and executes the program 7;

s328, the IFF queries the function link resource N to store the detection result (N ═ 1,2, and 3 …);

s326, all link resources of the IFF inquiry function are not detected, and the steps S327 to S328 are repeated until all N link resources of the airborne IFF inquiry function are detected;

s329, after all link resources of the IFF inquiry function are detected, the detection host displays the detection results of all the link resources 1-N of the IFF inquiry function;

and S330, the IFF inquires that the test mode detection is finished, and returns to the program main interface.

See fig. 4. The detection of the UV test mode of the airplane by the detection equipment is explained in detail, and according to the flow of the UV test mode, the method specifically comprises the following steps:

s400, programming a main interface;

s401, selecting a UV test mode on a control interface of a detection host;

s402, judging whether all link resources of the UV function are detected completely;

s403, if all the link resources of the UV function are not detected, judging whether the airborne UV link resource N is a receiving test;

s404, the airborne UV link resource is used for receiving and testing, and the UV function of the detection host is controlled to transmit digital audio radio frequency signals;

s405, controlling the airborne UV function to be in a receiving state consistent with the transmitting parameter through the communication management unit by the Ethernet;

s406, the airborne radio-frequency signal is received, audio data are decoded, and the audio data are reported to the detection host through the communication management unit;

s407, the detection host resolves the audio data into an SINAD value of the audio signal;

s408, judging whether the SINAD value of the audio signal meets the requirement;

s409 and S410, obtaining a detection result that the receiving function of the airborne UV functional link resource N is normal or abnormal (N is 1,2 and 3 …), and storing the result;

s411, if the airborne UV link resource N is not used for receiving test, the airborne UV function is controlled to transmit a digital audio radio frequency signal through the communication management unit;

s412, controlling the UV function of the detection host to be in a receiving state consistent with the emission parameters;

s413, detecting that the host receives the radio frequency signal, decoding the audio data, and calculating an audio signal SINAD value;

s414, judging whether the single tone signal SINAD value meets the requirement;

s415 and S416, obtaining a detection result that the airborne UV functional link resource N has a normal or abnormal emission function (N ═ 1,2, and 3 …), and storing the result;

s417, the detecting host displays the detection result of the UV functional link resource N (N ═ 1,2,3 …);

s402, detecting all link resources of the UV function, and repeating the steps S403) to S416) to respectively detect the receiving and transmitting functions of the airborne UV function link resources 2,3, …, N;

s418, completing detection of all link resources of the UV function, and displaying detection results of all link resources 1-N of the UV function by the detection host;

s419, completing the return to the program main interface in the UV test mode;

see fig. 5. In order to describe the detection of the detection equipment on the L test mode of the airplane in detail, according to the L test mode flow, the specific steps are as follows:

s500, programming a main interface;

s501, selecting an L test mode on a control interface of a detection host;

s502, judging whether all link resources of the TACAN function are detected completely;

s503, setting a TACAN azimuth value and a TACAN distance value to be simulated by the detection host machine when all link resources of the TACAN function are not detected;

s504, determining whether the onboard TACAN link resource N is an azimuth test or a distance test (N is 1,2,3 …); a

S505, the airborne TACAN link resource N is used for azimuth test, and the detection host is controlled to transmit a radio frequency signal of the TACAN azimuth according to the set value of S503;

s506, the detection host loads a TACAN function from the Ethernet control machine through the communication management unit;

s507, receiving the azimuth radio frequency signal by an airborne machine, and calculating the azimuth value;

s508, the orientation result is reported to the detection host through the communication management unit;

s509, judging whether the airborne TACAN azimuth measurement value meets the requirement or not by the detection host;

s510 and S511, obtaining a result that the airborne TACAN functional link resource N has a normal or abnormal receiving function (N is 1,2,3 …), and storing the result;

s512, the airborne TACAN link resource N is used for distance testing, and the detection host controls the airborne equipment to transmit a radio frequency signal queried by the TACAN distance through the communication management unit;

s513, controlling the detection host to load a TACAN function;

s514, the detection host receives the airborne inquiry signal, delays corresponding time according to the set distance value and transmits a response signal;

s515, resolving a distance value by the airborne receiving response signal;

s516, the airborne reports the resolved distance value to the detection host through the communication management unit;

s517, the detection host machine judges whether the airborne TACAN distance measurement value meets the requirement or not;

s518 and S519, obtaining detection results that the distance measurement function of the airborne TACAN functional link resource N is normal or abnormal (N is 1,2 and 3 …), and storing the results;

s520, the detecting host displays the azimuth and distance detection result of the TACAN functional link resource N (N-1, 2,3 …);

s502, if all the link resources of the TACAN function are not detected, repeating the steps S503-S520) to respectively detect the azimuth and distance functions of the airborne TACAN function link resources 2,3, …, N;

s521, judging that all the link resources of the TACAN function are detected, and displaying the detection results of all the link resources 1-N of the TACAN function by the detection host;

s522, completing the L test mode and returning to a program main interface;

see fig. 6. In order to describe in detail the detection of the IFF inquiry test mode of the aircraft by the detection host, according to the flow of the IFF inquiry test mode, the specific steps are as follows:

s600, programming a main interface;

s601, selecting an IFF inquiry test mode on a control interface of the detection host;

s602, judging whether all link resources of the IFF inquiry function are detected completely;

s603, if all link resources of the IFF inquiry function are not detected, inputting inquiry parameters on a detection host interface;

s604, controlling the detection host to be in an IFF response function;

s605, the communication management unit starts the inquiry from the ethernet controller IFF inquiry function link resource N (N is 1,2,3 …;

s606, receiving and detecting the response radio frequency signal of the host machine on board, calculating the correct response probability, and reporting the correct response probability to the detection host machine through the communication management unit and the Ethernet;

s607, detecting whether the host computer meets the requirement by judging the correct response probability measured by the onboard computer;

s608 and S609, determining that the onboard IFF inquiry function link resource N is abnormal or normal (N ═ 1,2, and 3 …);

s610, the detection host displays the detection result of the link resource N of the onboard IFF inquiry function (N is 1,2,3 …);

s602, repeating the steps S603-S610) to respectively perform function detection on the link resources 2,3, … and N of the airborne IFF inquiry function if all the link resources of the IFF inquiry function are not detected;

s611, after the detection of all the link resources of the IFF inquiry function is finished, the detection host displays the detection results of all the link resources 1-N of the IFF inquiry function;

s612, the IFF inquires about the test mode and returns to the program main interface;

see fig. 7. The method is characterized in that a flow block diagram of an I chain test mode is shown, and in order to explain in detail the detection of the I chain test mode of an airplane by a detection host, the method comprises the following specific steps:

s700, programming a main interface;

s701, selecting an I chain test mode on a control interface of the detection host;

s702, judging whether all link resources of the I link function are detected completely;

s703, setting I chain working parameters on an interface when all link resources of the I chain function are not detected;

s704, judging whether the airborne I-chain functional link resource 1 receives a test;

s705, carrying out airborne I-chain function link resource receiving test, and controlling the detection host to transmit an I-chain function radio frequency signal according to the set working parameters;

s706, detecting that the host controls the airborne I-chain function to be in a receiving state through the Ethernet according to the set working parameters through the communication management unit;

s707, the airborne receiving radio frequency signal is resolved to obtain a total correct receiving BIT number, a total error receiving BIT number and an error code rate value;

s708, the airborne correct total BIT receiving number, the total BIT receiving error number and the error code rate value are reported to the detection host;

s709, judging whether the airborne link I receiving error rate meets the requirement by the detection host through judging the resolving result reported by the airborne link I;

s710 and S711, providing a detection result that the receiving function of the airborne I-chain functional link resource N is normal or abnormal, and storing the result;

s712, the link resource N which is not the airborne I-chain function is subjected to receiving test, and the I-chain function of the detection host is controlled to be in a receiving state according to the set working parameters;

s713, controlling the airborne I-chain function to transmit radio frequency signals by the Ethernet through the communication management unit according to the set working parameters by the detection host;

s714, detecting the host receiving radio frequency signal to calculate the correct receiving total BIT number, the wrong receiving total BIT and the error code rate value;

s715, judging whether the I-link receiving error rate of the detection equipment meets the requirement or not by the detection host through the resolving result;

s716 and S717, a detection result that the emission function of the airborne I-chain functional link resource N is normal or abnormal is given, and the result is stored;

s718, the detection host displays the detection result of the I chain function link resource N;

s702, repeating the steps S703-S717) to respectively perform function detection on the airborne I-chain function link resources 2,3, … and N until all the link resources of the airborne I-chain function are tested;

s719, after the detection of all the link resources of the I link function is completed, the detection host displays the detection results of all the link resources 1-N of the I link function;

and S720, completing the I-chain test mode and returning to the program main interface.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.