阅读说明：本技术 一种可动态应答的声呐目标靶及其应答方法 (Sonar target capable of dynamically responding and response method thereof ) 是由 赵康华 崔立丹 于 2020-11-24 设计创作，主要内容包括：本发明涉及一种可动态应答的声呐目标靶,包括：换能器、宽带功放模块、集成信号处理模块、上位机、前置预处理模块、电源模块、显示模块和输入模块；宽带功放模块用于驱动换能器发射应答信号,还用于将换能器输入的信号转发给前置预处理模块；集成信号处理模块用于对接收信号进行数字化处理,还用于进行上位机参数应答与自由应答；前置预处理模块用于对接收到的换能器的阵元信号作低噪声线性放大,并经带通滤波和手动增益控制后送集成信号处理模块进行AD变换后再进行数字信号处理；上位机用于发送指令和在显示模块上显示采集接收的信号。该声呐目标靶可以自由选着应答模式、适配多种声呐型号、可根据需要添加相关反馈信号、操作方便、功能多。(The invention relates to a sonar target capable of dynamically responding, which comprises the following components: the device comprises a transducer, a broadband power amplifier module, an integrated signal processing module, an upper computer, a pre-processing module, a power supply module, a display module and an input module; the broadband power amplifier module is used for driving the transducer to transmit a response signal and forwarding a signal input by the transducer to the pre-preprocessing module; the integrated signal processing module is used for carrying out digital processing on the received signal and also for carrying out upper computer parameter response and free response; the pre-preprocessing module is used for performing low-noise linear amplification on the received array element signals of the transducer, transmitting the signals to the integrated signal processing module for AD conversion after band-pass filtering and manual gain control, and then performing digital signal processing; the upper computer is used for sending instructions and displaying the collected and received signals on the display module. The sonar target can be freely selected from a response mode, is adaptive to various sonar models, can be added with related feedback signals according to needs, and is convenient to operate and multifunctional.)

1. A dynamically respondent sonar target, comprising: the device comprises a transducer, a broadband power amplifier module, an integrated signal processing module, an upper computer, a pre-processing module, a power supply module, a display module and an input module;

the broadband power amplifier module is respectively electrically connected with the transducer, the integrated signal processing module and the pre-preprocessing module, is used for taking an analog signal obtained by DA conversion as the excitation of the power amplifier, driving the transducer to transmit a response signal through a power amplifier circuit and forwarding the signal input by the transducer to the pre-preprocessing module,

the integrated signal processing module is electrically connected with the pre-processing module and the upper computer respectively, and is used for carrying out digital processing on received signals and also for carrying out upper computer parameter response and free response;

the pre-preprocessing module is used for performing low-noise linear amplification on the received array element signals of the transducer, transmitting the signals to the integrated signal processing module after band-pass filtering and manual gain control for AD conversion and then performing digital signal processing;

the upper computer is respectively connected with the integrated signal processing module, the input module and the display module and is used for sending instructions and displaying the acquired and received signals on the display module;

the power module is respectively connected with the broadband power amplifier module, the integrated signal processing module, the front preprocessing module, the upper computer and the display module.

2. A dynamically responsive sonar target according to claim 1,

when the integrated signal processing module responds to the parameters of the upper computer, the integrated signal processing module analyzes the received signals in real time, automatically judges the arrival time of sonar emission signals and calculates the sound intensity level of received sonar pulses; and generating corresponding echo signals by combining calculation of target characteristic parameters such as target dimension, speed and intensity and parameters given by an upper computer.

3. A dynamically responsive sonar target according to claim 1,

when the integrated signal processing module carries out free response of an upper computer, analyzing a received signal in real time, automatically judging the arrival time of a sonar emission signal, and resolving the sound intensity level of the received sonar pulse; and processing the acquired signals by using a corresponding algorithm to generate corresponding echo digital signals.

4. A dynamically responsive sonar target according to claim 1,

the integrated signal processing module is also used for uploading received signal data waveforms to the upper computer for display by the display module.

5. A dynamically responsive sonar target according to claim 1,

the command sent by the upper computer comprises center frequency, a signal form, a gain control code, a working form, a target radial speed, a target scale, a target attitude and power reduction.

6. A dynamically responsive sonar target according to claim 1,

the broadband power amplifier module, the integrated signal processing module, the upper computer, the pre-processing module, the power module, the display module and the input module are integrated on an integrated machine.

7. A response method of a sonar target capable of dynamically responding is characterized in that,

the method comprises the following steps: an upper computer parameter response method and a free response method;

the upper computer parameter response method comprises the following steps:

analyzing the received signals in real time, automatically judging the arrival time of sonar emission signals, and resolving the sound intensity level of received sonar pulses;

calculating target characteristic parameters such as target dimension, speed and intensity and combining parameters given by an upper computer to generate corresponding echo signals;

the free response method comprises the following steps:

analyzing the received signals in real time, automatically judging the arrival time of sonar emission signals, and resolving the sound intensity level of received sonar pulses;

and processing the acquired signals by using a corresponding algorithm to generate corresponding echo digital signals.

8. A method for responding to a dynamically respondent sonar target according to claim 7,

the echo signal mathematical model is as follows:

wherein the content of the first and second substances,

ξ represents the target doppler shift;

f₀is the signal center frequency;

v is the radial velocity;

c is the speed of sound in water;

h is a target projection scale;

l is wavelet time delay;

n is the number of wavelets;

s is the generated digital echo signal;

and A is the amplitude of the signal corresponding to the echo sound source level obtained after the received sound level and the target attitude are analyzed.

Technical Field

The invention relates to a sonar target, in particular to a sonar target capable of dynamically responding and a response method thereof.

Background

Traditional sonar target divide into the wet end of sound target (transducer) and the dry end of sound target (receipts/sends out quick-witted case), and the detection of the sonar detection performance of the old model of generally being applied to, and can not freely respond, can only feed back several fixed signals commonly used and cooperate the sonar performance to detect, bind a certain model sonar basically, can not adapt multiple model and present novel sonar. The traditional sonar target lacks the display feedback of receiving the acquisition signal, is inconvenient to operate and has single function.

Disclosure of Invention

In order to solve the problems, the invention provides a sonar target which can be selected freely in response mode, can be adapted to various sonar models, can be added with related feedback signals according to requirements, is convenient to operate and has multiple functions and can respond dynamically, and the specific technical scheme is as follows:

a dynamically respondent sonar target comprising: the device comprises a transducer, a broadband power amplifier module, an integrated signal processing module, an upper computer, a pre-processing module, a power supply module, a display module and an input module; the broadband power amplifier module is respectively electrically connected with the transducer, the integrated signal processing module and the pre-preprocessing module, the broadband power amplifier module is used for taking an analog signal obtained through DA conversion as excitation of a power amplifier, driving the transducer to transmit a response signal through a power amplifier circuit, and forwarding a signal input by the transducer to the pre-preprocessing module, the integrated signal processing module is respectively electrically connected with the pre-preprocessing module and an upper computer, and the integrated signal processing module is used for performing digital processing on a received signal and performing upper computer parameter response and free response; the pre-preprocessing module is used for performing low-noise linear amplification on the received array element signals of the transducer, transmitting the signals to the integrated signal processing module after band-pass filtering and manual gain control for AD conversion and then performing digital signal processing; the upper computer is respectively connected with the integrated signal processing module, the input module and the display module and is used for sending instructions and displaying the acquired and received signals on the display module; the power module is respectively connected with the broadband power amplifier module, the integrated signal processing module, the front preprocessing module, the upper computer and the display module.

Further, when the integrated signal processing module responds to parameters of the upper computer, the integrated signal processing module analyzes received signals in real time, automatically judges the arrival time of sonar emission signals and resolves the sound intensity level of received sonar pulses; and generating corresponding echo signals by combining calculation of target characteristic parameters such as target dimension, speed and intensity and parameters given by an upper computer.

Furthermore, when the integrated signal processing module carries out free response of an upper computer, the integrated signal processing module analyzes the received signals in real time, automatically judges the arrival time of the sonar emission signals and resolves the sound intensity level of the received sonar pulse; and processing the acquired signals by using a corresponding algorithm to generate corresponding echo digital signals.

Furthermore, the integrated signal processing module is also used for uploading the received signal data waveform to the upper computer for display by the display module.

Further, the instruction sent by the upper computer includes center frequency, signal form, gain control code, working form, target path speed, target scale, target attitude, and power reduction.

Furthermore, the broadband power amplifier module, the integrated signal processing module, the upper computer, the pre-processing module, the power module, the display module and the input module are integrated on an integrated machine.

A method for responding to a dynamically-respondent sonar target, comprising: an upper computer parameter response method and a free response method; the upper computer parameter response method comprises the following steps: analyzing the received signals in real time, automatically judging the arrival time of sonar emission signals, and resolving the sound intensity level of received sonar pulses; calculating target characteristic parameters such as target dimension, speed and intensity and combining parameters given by an upper computer to generate corresponding echo signals; the free response method comprises the following steps: analyzing the received signals in real time, automatically judging the arrival time of sonar emission signals, and resolving the sound intensity level of received sonar pulses; and processing the acquired signals by using a corresponding algorithm to generate corresponding echo digital signals.

The echo signal mathematical model is as follows:

where ξ represents the target doppler shift; f. of₀Is the signal center frequency; v is the radial velocity; c is the speed of sound in water; h is a target projection scale; l is wavelet time delay; n is the number of wavelets; s is the generated digital echo signal; and A is the amplitude of the signal corresponding to the echo sound source level obtained after the received sound level and the target attitude are analyzed.

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

the sonar target capable of dynamically responding provided by the invention can freely select a response mode, can be adapted to various sonar models, can be added with related feedback signals according to needs, and is convenient to operate and multifunctional.

Drawings

FIG. 1 is a block diagram of a dynamically responsive sonar target;

FIG. 2 is a plan view of the internal structure of a dynamically responsive sonar target;

fig. 3 is a schematic diagram of the operation of a dynamic response sonar target.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

Example one

As shown in fig. 1 to 3, a dynamically responsive sonar target comprising: the device comprises a transducer, a broadband power amplifier module, an integrated signal processing module, an upper computer, a pre-processing module, a power supply module, a display module and an input module; the broadband power amplifier module is respectively electrically connected with the transducer, the integrated signal processing module and the pre-processing module, the broadband power amplifier module is used for taking an analog signal obtained through DA conversion as excitation of the power amplifier, driving the transducer to transmit a response signal through a power amplifier circuit, and forwarding a signal input by the transducer to the pre-processing module, the integrated signal processing module is respectively electrically connected with the pre-processing module and an upper computer, and the integrated signal processing module is used for carrying out digital processing on a received signal and carrying out upper computer parameter response and free response; the pre-preprocessing module is used for performing low-noise linear amplification on the received array element signals of the transducer, transmitting the signals to the integrated signal processing module for AD conversion after band-pass filtering and manual gain control, and then performing digital signal processing; the upper computer is respectively connected with the integrated signal processing module, the input module and the display module and is used for sending instructions and displaying the acquired and received signals on the display module; the power supply module is respectively connected with the broadband power amplifier module, the integrated signal processing module, the pre-processing module, the upper computer and the display module.

When the integrated signal processing module responds to the parameters of the upper computer, the received signals are analyzed in real time, the arrival time of sonar emission signals is automatically judged, and the sound intensity level of received sonar pulses is resolved; and generating corresponding echo signals by combining calculation of target characteristic parameters such as target dimension, speed and intensity and parameters given by an upper computer.

When the integrated signal processing module carries out free response of an upper computer, analyzing a received signal in real time, automatically judging the arrival time of a sonar emission signal, and resolving the intensity level of received sonar pulses; and processing the acquired signals by using a corresponding algorithm to generate corresponding echo digital signals.

The integrated signal processing module is also used for uploading the received signal data waveform to the upper computer for display by the display module.

The command sent by the upper computer comprises center frequency, signal form, gain control code, working form, target radial velocity, target scale, target attitude and power reduction.

Specifically, the transducer is a circular ring underwater acoustic transducer, transmits and receives in all directions, and horizontally covers 360 degrees.

The integrated signal processing module comprises an AD-DSP-DA integrated signal processing board and interface control software installed on the processing board, and the integrated signal processing module is used for receiving signals, processing and generating target echo or radiation signals and transmitting signals. The integrated signal processing module is an AD-DSP-DA integrated signal processing module.

The upper computer comprises upper computer hardware and display control end upper computer software, and the upper computer hardware comprises a mainboard, a CPU, an inner side and a hard disk. The software of the upper computer at the display and control end is a main interface for controlling sonar target equipment and is connected with an AD-DSP-DA integrated signal processing board in the case through the Ethernet. The software of the upper computer of the display and control end is designed and developed based on Visual C #, and supports a 64-bit Windows 7 operating system. Wherein the upper computer gives orders: center frequency, signal form, gain control code, operating form, target path speed, target scale, target attitude, power reduction, and the like.

The power module has the function of converting an external power supply into a corresponding power supply and then supplying power to other modules. The power input comprises an interface, the interface is connected with alternating current 220V, and outputs direct current +5V, -5V, +12V, -12V, +15V and +48V to supply power for other modules respectively. A power filter is needed to carry out power filtering treatment before power output so as to prevent electromagnetic interference.

The input module is a keyboard and mouse integrated disk and can adopt the forms of a notebook keyboard and a touch mouse.

The display module is a liquid crystal display screen.

In at least one embodiment, the broadband power amplifier module, the integrated signal processing module, the upper computer, the pre-processing module, the power supply module, the display module and the input module are integrated on the integrated machine. All functions are integrated in a case to realize the dry end as an integrated machine, and the carrying and the operation are convenient.

A handle is designed on the case of the all-in-one machine, and four foot pads can be installed at the bottom of the case. The keyboard and mouse integrated plate is arranged on the front side outside the case and has a folding function. Liquid crystal display installs the foremost side at quick-witted incasement portion, and host computer hardware installs the rear at liquid crystal display, and power module installs the left side at host computer hardware rear.

And a motherboard is mounted on the right side of the power module. The front preprocessing module board and the AD-DSP-DA integrated signal processing board are inserted in parallel on the motherboard, and the whole board is made into a small box form and fixed with the bottom board.

And a broadband power amplifier module is arranged behind the motherboard area and the power module area. The broadband power amplifier module is integrally made into a small box form and fixed with the bottom plate. Fig. 2 is a plan view of the internal structure of a dynamic response sonar target.

And a cooling fan is arranged on the right panel of the all-in-one machine to cool the power amplifier module area and the motherboard area. A radiator fan, an output interface (BNC) of received signal, a power amplifier transmission output interface (BNC), an RJ45 network interface, two USB interfaces, three hole supply socket, a switch, a fuse socket, a banning button (from locking-type switch) and four pilot lamps (three green one red) are arranged to the left side panel, a data plate position, in addition at left side panel rear end installation an aviation socket for connect the transducer cable.

A sonar target that can respond to has increased multiple signal form and also can select the free response mode, and the adaptation is multiple sonar model, does not change on the hardware basis, also can add relevant feedback signal as required.

The invention discloses a dynamic response type sonar target which is used for detecting the performance index requirements of sonar in a real propagation environment. A dynamic response type sonar target device is placed on a test ship, and the test ship drives away from a ship to a preset area. After the sonar emission signal reaches the circular transducer of the sonar target equipment, the signal is analyzed after pre-amplification, filtering, gain control and AD real-time acquisition, the arrival time of the sonar emission signal is automatically judged, and the real-time measurement is carried out on the received sound source level. The method can combine the set parameters to calculate and generate analog echo digital signals with different frequency shifts, time domain expansion and reflection intensity in real time, or freely respond (the free response reflects the two-way transmission loss, and the upper computer parameter response reflects the one-way transmission loss), process the acquired signals by using a corresponding algorithm to generate corresponding echo digital signals, then perform DA conversion to convert the digital echo signals into analog signals to be used as the excitation of a power amplifier, and finally drive the circular ring transducer to transmit response signals through the power amplifier circuit. The sonar of the ship detects and tracks the response signal by changing parameters such as MGC, threshold and the like, measures the distance and the direction of a simulated target at the position of sonar target equipment, and verifies the detection performance of the sonar according to the distance and the direction of an actual test ship.

Example two

In addition to the first embodiment, a method for responding to a dynamically-responsive sonar target of interest, comprising: an upper computer parameter response method and a free response method;

the upper computer parameter response method comprises the following steps:

analyzing the received signals in real time, automatically judging the arrival time of sonar emission signals, and resolving the sound intensity level of received sonar pulses;

calculating target characteristic parameters such as target dimension, speed and intensity and combining parameters given by an upper computer to generate corresponding echo signals;

the free response method comprises the following steps:

analyzing the received signals in real time, automatically judging the arrival time of sonar emission signals, and resolving the sound intensity level of received sonar pulses;

and processing the acquired signals by using a corresponding algorithm to generate corresponding echo digital signals.

The echo signal mathematical model is:

where ξ represents the target doppler shift; f. of₀Is the signal center frequency; v is the radial velocity; c is the speed of sound in water; h is a target projection scale; l is wavelet time delay; n is the number of wavelets; s is the generated digital echo signal; and A is the amplitude of the signal corresponding to the echo sound source level obtained after the received sound level and the target attitude are analyzed.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, which shall fall within the scope of the appended claims.