阅读说明：本技术 机载塔康综合测试仪 (Airborne tacan comprehensive tester ) 是由 袁安民 王莉 王小林 袁心钰 于 2021-08-26 设计创作，主要内容包括：本发明属于塔康系统测试技术领域,具体公开了机载塔康综合测试仪,包括主控/显示单元、视频单元、射频单元和电源单元；所述主控/显示单元的信号输入端与所述视频单元的信号输出端通过串行总线连接；所述射频单元的信号输入端与所述视频单元的信号输出端连接；所述主控/显示单元为触摸液晶显示屏,通过控制界面实现工作状态的选择、参数的设置,显示操作结果和检测参数。本发明结构紧凑,体积小,重量轻,便于携带,适合于各种复杂环境的应用,为地面和舰载塔康系统的调试提供了便利。(The invention belongs to the technical field of a Takang system test, and particularly discloses an airborne Takang comprehensive tester which comprises a main control/display unit, a video unit, a radio frequency unit and a power supply unit; the signal input end of the main control/display unit is connected with the signal output end of the video unit through a serial bus; the signal input end of the radio frequency unit is connected with the signal output end of the video unit; the main control/display unit is a touch liquid crystal display screen, and realizes the selection of working states, the setting of parameters, the display of operation results and detection parameters through a control interface. The invention has compact structure, small volume, light weight and convenient carrying, is suitable for application in various complex environments, and provides convenience for debugging ground and carrier-based TACAN systems.)

1. The airborne TACAN comprehensive tester is characterized by comprising a main control/display unit, a video unit, a radio frequency unit and a power supply unit;

the main control/display unit is connected with the video unit through a serial bus;

the radio frequency unit is connected with the video unit;

the main control/display unit is a touch liquid crystal display screen, and realizes the selection of working states, the setting of parameters, the display of operation results and detection parameters through a control interface;

the radio frequency unit is used for generating an airborne TACAN frequency, receiving a position and distance measuring pulse signal sent by the TACAN beacon and detecting the position and distance measuring pulse signal;

the video unit is used for measuring azimuth information and distance information in the TACAN beacon signals received by the radio frequency unit, decoding various received pulses, resolving and counting the received pulses, and finishing control and detection of the radio frequency unit;

the power supply unit is electrically connected with the main control/display unit, the video unit and the radio frequency unit.

2. The airborne tacon integrated tester of claim 1, wherein the video unit includes a programmable array FPGA, a processor ARM, a digital-to-analog converter, an analog-to-digital converter, and a driver connected in sequence;

the driver is connected with the radio frequency unit;

the processor ARM is connected with the main control/display unit;

the programmable array FPGA completes the coding of a ranging signal, the measurement of distance, the control of output power, the decoding of a received signal and the preprocessing of an envelope signal;

the processor ARM completes communication with the main control/display unit, resolving of signal parameters, control of transmitting frequency and self-checking of the comprehensive tester;

the digital-to-analog converter and the analog-to-digital converter complete the conversion of the analog signal and the digital signal.

3. The airborne tacon comprehensive tester according to claim 2, wherein an operational amplifier is further connected between the processor ARM and the driver.

4. The airborne tacan integrated tester according to claim 1, wherein the radio frequency unit comprises a constant temperature crystal oscillator, a frequency synthesizer, a pulse modulator, an AM modulator, an isolator, a circulator, a low noise amplifier, a radio frequency switch, a mixer, an AGC circuit, and a wave detector which are electrically connected in sequence; the system comprises a positioning and ranging device, a wireless communication device and a wireless communication device, wherein the positioning and ranging device is used for generating a required working frequency, transmitting a ranging pulse, receiving a positioning and ranging pulse signal sent by a TACAN beacon and detecting the positioning and ranging pulse signal;

the detector is connected with the video unit.

5. The airborne tacon integrated tester of claim 1, wherein a filter and a power amplifier are further disposed between the AM modulator and the isolator;

the AM modulator, the filter, the power amplifier and the isolator are electrically connected in sequence.

6. The on-board tacan integrated tester according to any one of claims 1-5, wherein the tester includes a panel and a chassis;

the panel comprises a front panel and a rear panel;

the main control/display unit is arranged on the front panel, and the video unit, the radio frequency unit and the power supply unit are arranged inside the case.

7. The onboard TACAN comprehensive tester according to claim 6, wherein the front panel is further provided with a radio frequency port (8), an alternating current indicator lamp (10) and an alternating current power switch (11); the rear panel is provided with a 220V/50Hz alternating current power supply input port (1), a protective tube (2), a direct current indicator lamp (3), a direct current power supply switch (4), a 28V direct current power supply input port (5), a frequency comprehensive detection port (6) and a debugging port (7);

the alternating current indicator lamp (10), the alternating current power switch (11), the 220V/50Hz alternating current power input port (1), the direct current indicator lamp (3), the direct current power switch (4) and the 28V direct current power input port (5) are electrically connected with the power supply unit;

the radio frequency port (8), the frequency synthesis detection port (6) and the debugging port (7) are used for connecting external equipment.

8. The airborne tacon comprehensive tester according to claim 7, wherein the fuse (2) is a 2.5A fuse mount, the frequency heald detection port (6) is an SMA type joint, the debug port (7) is a DB9 type joint, and the radio frequency port (8) is an N type joint.

9. The airborne tacon integrated tester of claim 6, wherein the radio frequency unit is individually enclosed within a shielded box disposed inside the chassis.

Technical Field

The invention belongs to the technical field of testing of a Takang system, and particularly relates to an airborne comprehensive tester for the Takang.

Background

The tacan system consists of a ground/ship-based beacon and an airborne device, wherein the airborne device comprises a radio transceiver, an antenna, a control and display device and the like. The pilot can continuously obtain the distance and orientation of the aircraft relative to the ground platform from a distance measuring Device (DME) of the onboard system. After the ground TACAN beacon station is built, the test needs to be carried out through a flight verification aircraft, and in order to improve the passing rate of the flight verification, the ground debugging needs to be carried out on the TACAN beacon. In the prior art, the ground debugging of the TACAN beacon is performed by placing the TACAN onboard equipment, a two-wire detector, an AC-AC power converter (220V50 Hz-115V 400Hz) and the like at different heights and distances. Because the airborne equipment, the two-wire detector and the AC-AC power converter (220V50Hz is converted into 115V400Hz) have larger volume, the connection is complicated, the failure rate is high, the device is not convenient to carry, more manpower is needed, and great difficulty is brought to the ground debugging work of the TACAN beacon.

Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a new onboard tacan integrated tester.

Disclosure of Invention

The invention aims to overcome the defect that the ground debugging of the TACAN beacon is difficult in the prior art, and provides an airborne TACAN comprehensive tester.

The invention provides an airborne TACAN comprehensive tester, which comprises a main control/display unit, a video unit, a radio frequency unit and a power supply unit, wherein the main control/display unit is used for displaying a video signal;

the main control/display unit is connected with the video unit through a serial bus;

the radio frequency unit is connected with the video unit;

the main control/display unit is a touch liquid crystal display screen, and realizes the selection of working states, the setting of parameters, the display of operation results and detection parameters through a control interface;

the radio frequency unit is used for generating a TACAN frequency, receiving a position and distance measuring pulse signal sent by the TACAN beacon and detecting the position and distance measuring pulse signal;

the video unit is used for measuring azimuth information and distance information in the TACAN signals received by the radio frequency unit, decoding various received pulses, resolving and counting the received pulses, and completing control and detection of the radio frequency unit;

the power supply unit is electrically connected with the main control/display unit, the video unit and the radio frequency unit.

The video unit comprises a programmable array FPGA, a processor ARM, a digital-analog converter, an analog-digital converter and a driver which are connected in sequence;

the driver is connected with the radio frequency unit;

the processor ARM is connected with the main control/display unit;

the programmable array FPGA completes the coding of a ranging signal, the measurement of distance, the control of output power, the decoding of a received signal and the preprocessing of an envelope signal;

the processor ARM completes communication with the main control/display unit, resolving of signal parameters, control of transmitting frequency and self-checking of the comprehensive tester;

the digital-to-analog converter and the analog-to-digital converter complete the conversion of the analog signal and the digital signal.

In a further scheme, an operational amplifier is connected between the processor ARM and the driver.

The radio frequency unit comprises a constant temperature crystal oscillator, a frequency synthesizer, a pulse modulator, an AM modulator, an isolator, a circulator, a low noise amplifier, a radio frequency switch, a frequency mixer, an AGC circuit and a wave detector which are electrically connected in sequence; the system comprises a positioning and ranging device, a wireless communication device and a wireless communication device, wherein the positioning and ranging device is used for generating a required working frequency, transmitting a ranging pulse, receiving a positioning and ranging pulse signal sent by a TACAN beacon and detecting the positioning and ranging pulse signal;

the detector is connected with the video unit.

A filter and a power amplifier are also arranged between the AM modulator and the isolator;

the AM modulator, the filter, the power amplifier and the isolator are electrically connected in sequence.

The further proposal is that the device comprises a panel and a chassis;

the panel comprises a front panel and a rear panel;

the main control/display unit is arranged on the front panel, and the video unit, the radio frequency unit and the power supply unit are arranged inside the case.

The further scheme is that the front panel is also provided with a radio frequency port, an alternating current indicator light and an alternating current power switch.

The further scheme is that a 220V/50Hz alternating current power supply input port, a fuse tube, a direct current indicator lamp, a direct current power supply switch, a 28V direct current power supply input port, a frequency comprehensive detection port and a debugging port are arranged on the port panel.

The further scheme is that the fuse is a 2.5A fuse mounting seat, the frequency comprehensive detection port is an SMA type joint, the debugging port is a DB9 type joint, and the radio frequency port is an N type joint.

Further, the radio frequency unit is separately packaged in a shielding box.

Compared with the prior art, the invention has the beneficial effects that: the invention has compact structure, small volume and light weight, is convenient to move, can greatly reduce the working strength, is suitable for application in various complex environments, and provides convenience for debugging the ground/carrier-based TACAN beacon.

Drawings

The invention is illustrated and described only by way of example and not by way of limitation in the scope of the invention as set forth in the following drawings, in which:

FIG. 1: the airborne TACAN comprehensive tester forms a block diagram;

FIG. 2: the main control/display unit is connected with the video unit;

FIG. 3: the video unit forms a block diagram;

FIG. 4: the radio frequency unit forms a block diagram;

FIG. 5: the power supply unit forms a block diagram;

FIG. 6: a rear panel component arrangement schematic;

FIG. 7: the structure schematic diagram of the airborne Tacan comprehensive tester;

FIG. 8: the external field uses a connection relation diagram;

FIG. 9: infield usage connectivity schematic;

FIG. 10: displaying an interface of the airborne Takang comprehensive tester;

in the figure: 1220V/50 Hz alternating current power supply input port, 2 fuse, 3 direct current indicator lamp, 4 direct current power supply switch, 528V direct current power supply input port, 6 frequency comprehensive detection port, 7 debugging port, 8 radio frequency port, 9 touch display screen, 10 alternating current indicator lamp and 11 alternating current power supply switch.

Detailed Description

In order to make the objects, technical solutions, design methods, and advantages of the present invention more apparent, the present invention will be further described in detail by specific embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the airborne tacan integrated tester is composed of a main control/display unit, a video unit, a radio frequency unit and a power supply. All parts of the comprehensive tester work cooperatively, and the measurement of the TACAN navigation parameters such as the direction, the distance and the like is mainly completed, so that the technical indexes of the TACAN beacon equipment are detected.

The main control/display unit adopts a touch liquid crystal display screen, and completes the selection of working states, the setting of parameters, the display of operation results and detection parameters through a designed control interface. The signal transmission between the main control/display unit and the video unit adopts a serial bus, and hardware connection is reduced, as shown in fig. 2.

And after the comprehensive tester is powered on and started, the user operates the comprehensive tester through the touch display screen of the main control/display unit. And finishing the modification of the working state and the working parameters of the equipment by clicking each parameter displayed by the touch display screen. The main control/display unit sends the changed parameter information to the video unit through the serial port. Meanwhile, the main control/display unit receives and displays various measurement parameters and equipment self-checking information sent by the video unit, so that a user can know the state of the TACAN beacon and the state of the comprehensive tester conveniently.

The video unit can exchange setting parameter information and detection parameter information with the main control/display unit; according to the set parameters, the control of the whole machine is realized; generating a ranging inquiry signal according to the working state of the comprehensive tester; the method can measure the azimuth information and the distance information in the TACAN signals received by the radio frequency unit; decoding the received various pulses, and resolving and counting; and completing the control and detection of the radio frequency unit.

As shown in fig. 3, the video unit mainly comprises a programmable array FPGA, a processor ARM, a digital-to-analog converter D/a, an analog-to-digital converter a/D, an operational amplifier and a driver, wherein the programmable array FPGA completes encoding of a ranging signal, measurement of a distance, control of output power, decoding of a received signal, and preprocessing of an envelope signal; the processor ARM completes communication with the main control/display unit, resolving of signal parameters, control of transmitting frequency and self-checking of the comprehensive tester; A/D and D/A complete the conversion of analog and digital signals.

The ARM of the video unit resolves the signal parameters by receiving the signal parameters and the control parameters sent by the main control/display unit, and the operation results of the signal parameters are sent to the FPGA; controlling the frequency of the output signal of the radio frequency unit according to the selected channel; performing secondary processing on the azimuth preprocessing data sent by the programmable array FPGA to calculate azimuth information and simultaneously calculating modulation degrees of 15Hz and 135 Hz; and complete machine self-inspection of the comprehensive tester is completed.

The programmable array FPGA samples detection signals sent by the radio frequency unit, and performs half-amplitude detection, coding identification and classification counting on the received pulse signals; simultaneously sampling and preprocessing the envelope signal, and sending data to a processor ARM; and generating a ranging inquiry pulse meeting the requirement according to the signal parameters sent by the processor ARM to finish the distance measurement.

And the video unit completes the measurement of the azimuth signal, the distance signal and the pulse signal in the coordinated and matched work of the processor ARM and the programmable array FPGA. Meanwhile, the video unit completes the self-checking of the whole machine and outputs the signal to be tested through the panel test terminal, so that the maintenance and debugging are facilitated.

As shown in fig. 4, the radio frequency unit mainly includes an oven controlled crystal oscillator, a frequency synthesizer, a pulse modulator, an AM modulator, a power amplifier, an isolator, a circulator, a low noise amplifier, a radio frequency switch, a filter, a mixer, an AGC circuit, a detector, and the like.

The radio frequency unit finishes the generation of the TACAN frequency; completing the modulation and power amplification of the ranging pulse signal; the control of radio frequency and power is completed through the control signal sent by the video unit; meanwhile, low-noise amplification, filtering, down-conversion, pulse detection, envelope detection and the like are carried out on the received signal.

The radio frequency unit generates the required working frequency under the control of the video unit, transmits the ranging pulse, receives the positioning and ranging pulse signal sent by the TACAN beacon and detects the positioning and ranging pulse signal. The radio frequency unit is divided into a transmitting channel and a receiving channel.

And the sending channel completes the generation and amplitude control of the ranging signal. The frequency synthesizer generates radio frequency signals of corresponding channels under the control of the channel control codes sent by the video unit, generates frequency locking signals and sends the frequency locking signals to the video unit for monitoring; the distance measurement inquiry video signal generated by the video unit is sent to the modulator to modulate the radio frequency signal, and a TACAN radio frequency signal which meets the TACAN distance measurement signal specification is generated and is sent to the TACAN beacon equipment through a cable or an antenna after passing through the filter, the power amplifier, the isolator and the circulator.

And the receiving channel completes the receiving and detection of the TACAN position and distance measuring signal. The positioning and ranging signal sent from the TACAN beacon device enters a low noise amplifier after passing through a circulator and a filter. The amplified signal is mixed by the mixer, the frequency is changed to 63MHz, and the signal enters the radio frequency switch. The selection switch is used for selecting work and self-checking, signals or self-checking signals during work are sent to the AGC amplifier after passing through the switch, amplified and then mixed with a secondary local oscillator sent by the DDS in a secondary mixer, the signals after mixing are output after filtering, amplification and detection, detection signals are output to the video unit for detection on one hand, and are sent to the AGC amplifier for AGC control on the other hand, and the stability of the detection signals is guaranteed.

As shown in fig. 5, the power supply unit includes a switching power supply module and a dc power conversion module, and converts the input 220V/50Hz ac power and 28V dc power into 12V dc power to be supplied to the video unit, the rf unit, and the main control/display unit.

When alternating current is adopted for power supply, the input 220V/50Hz alternating current is converted into direct current 28V through the switching power supply module, and then is converted into direct current 12V through DC-DC; when the direct current power supply is adopted, the input 28V direct current is converted into 12V direct current through the DC-DC module.

The generated 12V direct current is transmitted to the video unit, the radio frequency unit and the main control/display unit for power supply, and each module is converted into required voltage for the second time according to requirements.

In the present embodiment, the overall dimension of the onboard tacan integrated tester is 330 (length) × 260 (width) × 164 (height); case weight: 6 kg. The main components of the comprehensive tester can be divided into: a panel and a cabinet for mounting an electronic unit, and a packing case for storing the cabinet, a power cord, and the like. According to the use characteristics of the comprehensive tester, the portable case is adopted, and the case body is of a sealing structure, so that the working environment characteristics, the thermal characteristics and the electromagnetic shielding performance are fully considered. The radio frequency unit is independently packaged in the shielding box, so that the EMC problem is fundamentally solved.

The comprehensive tester adopts a modular design idea, and has the advantages of small volume, light weight, high strength and convenient maintenance.

The equipment is powered by an external power supply, and can be powered by a 220V alternating current power supply or a 28V direct current power supply. The equipment has a polarity conversion function and has no polarity requirement on an input direct current power supply.

The output radio frequency power of the comprehensive tester is 10W, and no-load use is forbidden. When the external field is used, the output end of the comprehensive tester must be connected with an antenna; when the internal field is used, the output end of the comprehensive tester must be externally connected with an attenuator not less than 30 dB.

As shown in fig. 6 and 7, the 220V/50Hz ac power input port 1 is an ac standard socket, and is used for connecting a 220V/50Hz ac power supply to a device, the safety tube 2 is a 2.5A safety tube mounting seat, the dc power switch is turned on, the dc indicator light 3 is on, the dc power switch 4 is turned on, and the dc power supply is started. The 28V direct current power supply input port 5 is a two-core socket and is used for connecting a 28V direct current power supply for equipment. The frequency comprehensive detection port 6 is an SMA type joint, and a manufacturer is used for maintaining and debugging equipment. The debugging port 7 is a DB9 type connector and is used for leading out a key point testing signal for maintenance/testing. The radio frequency port 8 is an N-type connector for transmitting and receiving tacang radio frequency signals. The touch display screen 9 provides a man-machine interface with a user, and parameter setting and display can be performed.

As shown in FIG. 8, when the outfield is used, the RF port of the integrated tester is connected with the antenna through the RF cable and is placed at a distance of 1-10 km from the TACAN beacon.

As shown in fig. 9, when the infield is used, the rf port of the integrated tester is connected to the 40dB attenuator, and then connected to the beacon device through the rf cable.

When the alternating current 220V power supply is adopted, after the alternating current power line is connected, the front panel alternating current power switch is closed, and then the system is started; pressing the button again shuts down the system.

When the direct current 28V power supply is adopted, after the direct current power supply cable is connected, the power switch of the rear panel is closed, and then the system is started; pressing the button again shuts down the system.

After the device is powered on, the system automatically runs application software, and the display interface of the touch screen is shown in fig. 10.

The user application software interface of the airborne TACAN comprehensive tester consists of two areas, namely a control parameter and a navigation parameter.

The right part is a control parameter area which is a user information operation input area and is used for selecting the current working mode and working channel of the comprehensive tester; the left part is a navigation parameter area for displaying navigation parameters such as the azimuth, the distance and beacon station transmitting signal parameter indexes measured by the comprehensive tester.

Operating state selection

The user switches the working state by clicking the buttons of 'control parameter' area 'on/off', 'receiving/sending', 'empty/empty' and 'self-checking'.

After the comprehensive tester is powered on and started, the default is 'off', and the 'off' button is clicked to turn 'on'.

The functions of each working state are as follows:

(1) the 'receiving' state: the comprehensive tester works in a positioning state and only receives a positioning signal and an identification signal sent by a TACAN beacon; the transmitter of the integrated tester is turned off and does not transmit signals.

(2) "receive/transmit" state: the comprehensive tester works in a positioning and ranging state and receives a positioning signal, an identification signal and a ranging response signal sent by a TACAN beacon; a ranging interrogation signal is transmitted.

(3) "empty/empty" state: the comprehensive tester works in an air-to-air distance measurement state, transmits a distance measurement inquiry signal and receives a distance measurement response signal.

(4) "self-check" status: the comprehensive tester completes self-checking to ensure normal equipment state

4.4.3.3 working channel setting

The user completes the setting of the X mode and the Y mode by clicking the buttons of the 'control parameter' area 'X' and 'Y'.

The setting of the operating wave channel is completed by clicking the "control parameter" region "+ 1", "-1", "+ 10", "-10" buttons. Click "+ 1", "-1" is adjusted by 1 channel step, click "+ 10", "-10" is adjusted by 10 channel step.

4.4.3.4 navigation parameter display

After the equipment is powered on to work, relevant navigation signal parameters resolved from the received signals are displayed in a navigation parameter area.

The displayed navigation parameters include:

(1) orientation: the bearing value is measured in units with respect to the tacan beacon.

(2) Distance: the slope distance value relative to the tacon beacon is measured in km.

(3)15Hz modulation: modulation degree of 15Hz signal in envelope signal, unit%.

(4) Modulation degree at 135 Hz: the modulation of the 135Hz signal in the envelope signal is in%.

(5) Number of main reference groups: the number of main reference groups received in 1 second, unit group/second.

(6) Number of reference groups: number of secondary reference clusters received in 1 second, unit cluster/second.

(7) The number of received pulses is: the number of all pulses received in 1 second, unit number/second.

(8) Station identification code: the station identification codes received, A-Z, are 4 letters at most.

(9) Logarithm of interrogation pulse: the number of interrogating pulse pairs sent in 1 second, unit pairs/second.

(10) Logarithm of response pulse: the number of received acknowledge pulse pairs within 1 second, unit pairs/second.

(11) The response probability: the number of response pulse pairs received within 1 second is related to the number of transmitted interrogation pulse pairs in%.

(12) Emission power: peak power of the transmitted interrogation pulse in dBm.

(13) Reception power: the power of the received signal, in dBm.

(14) The equipment state: and the comprehensive tester self-checks the state in real time.

The main technical parameters of the embodiment are as follows

Radio frequency and channel

The working frequency is 962 MHz-1213 MHz, the frequency interval is 1MHz, 252 channels are divided into X mode and Y mode, the frequency stability is +/-1 multiplied by 10^-6The channel switching time is not more than 1 second. As shown in table 1:

table 1: frequency range table for different modes

Range of radio frequency output levels

The peak power of the ranging pulse is 40dBm +/-1 dBm, and the difference of the peak power of the double pulses is not more than 1 dB.

Index of transmitted signal

Ranging interrogation pulse

A distance interrogation pulse pair is transmitted, the pulses being bell shaped pulses. In the ground-space mode X mode, the interval of double pulses is 12 mu s, and in the Y mode, the interval of double pulses is 36 mu s; the double pulse interval is 12 μ s in the null-null mode X mode and 24 μ s in the Y mode.

The search time of the interrogation pulse repetition frequency is less than or equal to 150 pairs/s, and the tracking time is 20-30 pairs/s.

Clock-shaped pulse waveform

(1) Leading edge rise time: 2.0 +/-0.5 mu s;

(2) trailing edge fall time: 2.5 +/-0.5 mu s;

(3) pulse width: 3.5 +/-0.5 mu s;

(4) the top should not be lower than the 95% point-to-point line of the front and back edges.

Received signal indicator

Azimuth measurement

Under the conditions that the signal synthesis modulation degree is 20% -60% and the input signal intensity is-70 dBm, the following requirements are met:

(1) the position detection error is less than or equal to 1.5 degrees within the range of 0-360 degrees;

(2) the continuous tracking speed is more than or equal to +/-20 degrees/s;

(3) the azimuth searching time is less than or equal to 6s, and the azimuth memorizing time is 4-8 s;

(4) the orientation self-test indicates 180 ° ± 5 °.

Modulation degree measurement (15Hz and 135Hz)

(1) And (3) measuring precision: plus or minus 1 percent;

(2) measurement range: 0 to 100%.

Distance measurement

Under the condition that the input signal intensity is-70 dBm, the following requirements are met:

(1) the error is less than or equal to +/-0.2 km within the range of 0-10 km;

(2) the continuous tracking speed is > +/-1500 m/s;

(3) the distance search time is less than or equal to 3s, and the distance memory time is 10-15 s;

(4) distance self test indicates 199.9km ± 0.2 km.

Received power measurement

The received signal power level is measured.

Pulse number measurement

The number of pulses per second is measured.

The pulse types are as follows: the number of main reference groups, the number of auxiliary reference groups, the number of ranging interrogation pulses, the number of ranging response pulses, and the total number of pulses.

Displaying parameter index

Azimuth display

(1) Display range: 0 to 359.9 degrees;

(2) display resolution: 0.1 degree.

Modulation display (15Hz and 135Hz)

(1) Display range: 0 to 100 percent;

(2) display resolution: 1 percent.

Distance display

(1) Display range: 0-500 km;

(2) display resolution: 0.1 km.

Pulse number display

(1) Main reference group display range: 0 to 20 groups/second;

(2) reference group display range: 0 to 150 groups/second;

(3) ranging response pulse pair display range: 0-200 pairs/second;

(4) total number of pulses display range: 0 to 20 pieces/second.

Power display

(1) The emission power display resolution is 0.1 dBm;

(2) the received power shows a resolution of 1 dBm.

Environmental conditions

(1) The working temperature is-10 ℃ to +55 ℃;

(2) the storage temperature is-55 ℃ to +70 ℃;

(3) the relative humidity is 95-98%.

Power supply

(1) A single-phase alternating current power supply, 50Hz, 220V +/-10 percent;

(2) a direct current power supply, 28V plus or minus 20 percent;

(3) the power consumption is not more than 18W.

MTBF value

2000 hours.

Volume and weight

Volume: 330 (length) × 260 (width) × 164 (height) mm;

weight: not more than 6 kg.

Continuous working time

For 24 hours.

The invention has the following functions:

(1) the system has three working modes of single receiving, receiving/sending and self-checking;

(2) implementing an azimuth measurement relative to the tacan beacon;

(3) enabling distance measurement relative to the tacan beacon;

(4) measuring station identification codes of the TACAN beacon;

(5) measuring the modulation degrees of 15Hz and 135Hz envelope signals in the azimuth signal;

(6) measuring the number of main reference signals, auxiliary reference signals, ranging answer signals and pulses in the received signals in unit time;

(7) calculating the distance measurement response probability of the TACAN beacon;

(8) has the self-checking function;

(9) the measured respective parameter values are displayed.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.