Detection and trunk integrated signal generation and acquisition device and method based on RFSOC (Radio Frequency System On Chip)

Abstract

The invention discloses an RFSOC-based detection and interference integrated signal generation and acquisition device and method, and belongs to the technical field of radar detection and interference integration. According to the invention, the sampling rate and the mixing frequency point can be flexibly controlled to intercept the chirp signal of the opposite side and transmit and collect the integrated wave signal of the detector of our side; parameters of intercepted pulses are estimated, linear frequency modulation signals are generated and modulated according to the parameters, and waveform signals with dual functions of detection and interference are generated; connection with an upper computer is realized through a UDP protocol, and a user can issue a configuration instruction on the upper computer in real time and store radar echo data so as to carry out real-time signal processing and subsequent analysis; by intercepting and capturing signals of the opposite side and generating, transmitting and collecting detection and trunk integrated waveform signals, the device has the dual functions of a radar detector and a jammer, and has the advantages of being high in processing speed, high in reliability and high in portability.

Description

Technical Field

[0001] The present invention relates to the field of radar detection and interference integration technology, and in particular to a detection and interference integrated signal generation and collection device and method based on RFSOC. Background Art

[0002] Radar and jammers are essentially based on the use of electromagnetic spectrum space. By sending a signal that has both radar detection and jamming functions, it is possible to detect and track the opponent's target while effectively jamming the opponent's platform's radar system. This technology not only significantly improves the efficiency of jamming and radar combat capability, but also improves the efficiency of equipment resource utilization.

[0003] With the development of field programmable gate array technology, the new generation of RFSOC chips integrate the RF transmission and acquisition links into the chip, so that the chip has the ability to send and receive radio signals and signal processing capabilities. This not only reduces system power consumption, but also reduces the size of the system and improves the overall integration and performance of the equipment.

[0004] Most of the existing integrated signal generation and acquisition devices for probes and dry-stems use analog-to-digital conversion chips and field programmable gate array technology. There is a large delay between signal sampling and processing, and the equipment is large in size. In combat environments, it has the disadvantages of insufficient flexibility and portability, and the system upgrade and expansion is also relatively difficult. Summary of the invention

[0005] The purpose of the present invention is to propose an integrated detection and jamming signal generation and collection device and method based on RFSOC, which generates an integrated waveform signal with dual functions of detection and jamming by intercepting the opponent's signal, so that the device has the functions of a radar detector and a jammer at the same time, effectively overcoming the problems of insufficient mobility and low resource utilization caused by the traditional need for two devices to realize the detection and jamming functions respectively.

[0006] The technical solution to achieve the purpose of the present invention is: a probe-stem integrated signal generation and acquisition device based on RFSOC, comprising:

[0007] The RF data conversion module is used to realize the bidirectional conversion between the digital baseband signal and the analog RF signal; the module realizes the sampling of the RF analog signal through down-conversion and extraction processing, and at the same time, the module up-converts the generated probe-dry integrated waveform signal to the specified frequency point;

[0008] DMA transmission module is used to realize the communication between PL and PS in RFSOC chip; this module is used to forward the control instructions of the host computer, transmit the signal collected by the RF data conversion module to the PS end and save it in its memory;

[0009] The pulse parameter estimation module is used to extract the necessary pulse parameters from the intercepted enemy radar signal and provide input basis for generating the integrated waveform of the probe and the dryer;

[0010] The probe-stem integrated waveform generation module is used to generate LFM pulse signals and generate probe-stem integrated waveform signals by phase coding cutting smart modulation;

[0011] UDP transmission module is used to realize data communication between RFSOC and the host computer.

[0012] A method for generating an integrated detection and jamming signal based on RFSOC, based on the above-mentioned detection and jamming integrated signal generating and collecting device, by intercepting the opponent's signal, generating an integrated waveform signal with dual functions of detection and jamming, so that the device has the functions of a radar detector and a jammer at the same time, the method comprises the following steps:

[0013] Step 1, device initialization and parameter delivery; after the equipment is turned on, the PS end establishes an initialization connection with the UDP network port of the host computer, and configures the clock chip through the SPI serial port to provide the required clock input for the RFSOC chip and the RF data conversion module; after the network port is connected, the host computer sends the number of encoding code elements, the number of detection pulse accumulation, and the signal frequency band information to the device through the UDP protocol. The PS end sends the received parameters to the PL end through the DMA transmission module, and configures the sub-band mixing frequency point of the RF data conversion module through the AXI protocol;

[0014] Step 2: The RF data conversion module intercepts the signal in each sub-band in turn, obtains the digital baseband signal through RF sampling and down-conversion processing for subsequent pulse parameter estimation;

[0015] Step 3, pulse detection and parameter estimation of the digital baseband signal; when it is determined that the opponent's pulse signal is intercepted, the pulse width and pulse repetition interval of the intercepted signal are obtained by calculating the energy, and the carrier frequency and bandwidth of the intercepted signal are obtained by FFT;

[0016] Step 4: Generate a linear frequency modulation pulse signal identical to the intercepted signal according to the parameters of the intercepted signal, and use phase coding and cutting smart modulation to make it have both detection and jamming functions, and cache the generated detection and jamming integrated signal into RAM for subsequent transmission;

[0017] Step 5, realize the transmission and reception of the integrated waveform signal of the probe and the dryer; the RF data conversion module reads the integrated waveform signal of the probe and the dryer cached in the RAM and up-converts it to the frequency point where the other party's signal is located, and controls the microwave front end and the TR antenna through the RFSOC to realize the transmission; after each transmission, the RF data conversion module collects the detection echo signal of the own side, and uploads it to the PS end cache through the DMA method after down-conversion and extraction processing; according to the set number of pulse accumulation, repeat the above pulse sending and receiving process;

[0018] Step 6: After a radar CPI cycle ends, the PS uploads the accumulated echo data to the host computer through the UDP protocol for storage and processing.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) The present invention generates and collects integrated detection waveforms, so that a set of antenna equipment has the dual functions of radar detection and enemy interference. While having high functional integration and high data utilization, it gets rid of the dependence on multiple sets of antennas when different functional devices are activated at the same time, and improves the portability of combat equipment.

[0021] (2) The present invention relies on the direct acquisition and direct transmission function of the RFSOC chip to reduce the reliance of the prior art on external analog circuits. While eliminating the influence of uncontrollable factors that may be introduced by conventional external analog circuits, it solves the shortcomings of conventional digital-to-digital conversion chips and digital-to-analog conversion chips, such as complex wiring and large volume. This makes the present invention have the advantages of stable working state, small volume and low power consumption.

[0022] (3) The present invention can flexibly set the sampling rate in RFSOC and flexibly configure the mixing frequency through the AXI bus, solving the problem of fixed sampling rate and poor flexibility of traditional chips. Compared with the traditional 204B interface or SPI serial port configuration method, the present invention significantly reduces the configuration delay, can efficiently adjust the working parameters in different usage scenarios, and quickly respond to complex battlefield needs.

[0023] (4) The present invention transmits the detection echo data to the host computer for processing through on-chip DMA transmission and inter-device UDP network transmission, thereby solving the problem of complex transplantation and difficult debugging of radar target detection code in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the hardware connections in the experiment.

[0025] Figure 2 It is an internal flow chart of the present invention.

[0026] Figure 3 It is a schematic diagram of setting up the experimental test scene of the present invention.

[0027] Figure 4 It is a diagram showing the effect of testing the detection capability in the detection experiment of the present invention.

[0028] Figure 5 This is a diagram of the detection effect of the opponent's radar when the device interference is not turned on in the experiment of the present invention.

[0029] Figure 6 This is a diagram of the enemy radar detection effect after the device interference is turned on in the experiment of the present invention. DETAILED DESCRIPTION

[0030] The present invention proposes a probe-stem integrated signal generation and acquisition device based on a radio frequency system on chip (RFSOC), comprising: a radio frequency data conversion module, a direct memory access (DMA) transmission module, a pulse parameter estimation module, a probe-stem integrated waveform generation module, and a user datagram protocol (UDP) transmission module, wherein:

[0031] The RF data conversion module is used to realize the bidirectional conversion between digital baseband signals and analog RF signals. The module collects the opponent's signal and our detection echo signal in the RF frequency band through down-conversion and extraction processing. At the same time, the module can up-convert the generated integrated detection and dry wave signal to the specified frequency point, directly connect the power amplifier circuit and the antenna array through the RF interface, and realize the transmission of the integrated detection and dry wave signal.

[0032] The DMA transmission module is used to realize the communication between the programmable logic (PL) end and the processing system (PS) end in the chip. On the one hand, the module is responsible for forwarding the control instructions of the host computer, and on the other hand, it transmits the signals collected by the radio frequency data conversion module to the PS end and saves them in its memory.

[0033] The pulse parameter estimation module is used to extract the necessary pulse parameters from the intercepted enemy radar signal, and provide input basis for generating the integrated waveform of detection and stem. The module consists of three parts: pulse determination, time domain parameter calculation, and frequency domain parameter calculation. The collected signal is modulated and the power is obtained. When the power is greater than the set threshold, it is determined that there is a pulse signal, the pulse start time and the pulse end time are counted and recorded, and the pulse midpoint and pulse repetition period are calculated. The measurement of pulse width is based on power analysis, recording the maximum power point of the pulse and the end point where the maximum power value drops by 3dB. The effective pulse width is twice the difference between the end point of the pulse and the midpoint of the pulse. Frequency domain parameter calculation is to perform spectrum estimation by means of Fast Fourier Transform (FFT), square and add the real and imaginary parts of the FFT output to form a power spectrum, search for the spectrum line with the largest amplitude in the power spectrum, and further calculate and search for the starting spectrum line and the end spectrum line where the power value of this point drops by 3dB. The signal carrier frequency is the median of the two, and the frequency domain bandwidth is the difference between the two.

[0034] The maximum power search process in this module uses a sliding window to average a section of sampling points to reduce random errors.

[0035] The basic unit for calculating pulse width in this module is the clock cycle count point of the system clock, and the count values ​​are relative to the start time of sampling. The basic unit for calculating carrier frequency and bandwidth is the minimum frequency resolution of FFT.

[0036] In this module, FFT is implemented through the FFTip core.

[0037] The probe-stem integrated waveform generation module is used to generate a linear frequency modulation (LMF) pulse signal, and to generate a probe-stem integrated waveform by means of phase encoding cutting and smart modulation. Functions include: generating LMF signals and phase encoding, realizing cutting and smart modulation, and caching signal waveforms. First, according to the intercepted linear frequency modulation pulse signal parameters, a counter method is used to perform frequency stepping on the direct digital frequency synthesizer (DDS) to generate a linear frequency modulation signal. Then, according to the number of code elements sent by the host computer, a shift register is used to realize the movement from low to high bits and the XOR operation to generate the required binary code. After the binary code is spread spectrum, the phase encoding cutting and smart modulation of the linear frequency modulation pulse signal is realized. Finally, the generated probe-stem integrated waveform signal is cached in a random access memory (Random Access Memory, RAM).

[0038] The phase coding cutting smart modulation in this module cuts the linear frequency modulation signal in the time domain, and then performs phase modulation through a phase coding sequence. It achieves high coherence with the opponent's radar signal while having strong random jump characteristics. When our radar detects interference, it can well distinguish our signal from the opponent's linear frequency modulation signal. At the same time, it increases the difficulty of identifying our complex signal for the opponent, making it difficult to remove our interference signal.

[0039] The UDP transmission module is used to realize data communication between RFSOC and the host computer. After completing the network port initialization process, the module can establish a network connection between the present invention and the host computer, and realize the parameter sending from the host computer to RFSOC and the real-time echo data transmission from RFSOC to the host computer through the UDP protocol.

[0040] The implementation steps of the probe-stem integrated signal generation and collection of the present invention include:

[0041] Step 1, device initialization and parameter delivery. After the equipment is turned on, the PS end establishes an initialization connection with the UDP network port of the host computer, and configures the clock chip through the serial peripheral interface (SPI) serial port to provide the required clock input for the RFSOC chip and the RF data conversion module. After the network port is connected, the host computer sends the number of coded code elements, the number of accumulated detection pulses, and the signal frequency band information to the device through the UDP protocol. The PS end sends the received parameters to the PL end through the DMA transmission module, and configures the sub-band mixing frequency of the RF data conversion module through the Advanced eXtensible Interface (AXI) protocol.

[0042] Step 2: The RF data conversion module intercepts the signal in each sub-band in turn, and obtains the digital baseband signal through RF sampling and down-conversion processing for subsequent pulse parameter estimation.

[0043] Step 3: pulse detection and parameter estimation of the digital baseband signal. When it is determined that the opponent's pulse signal is intercepted, the pulse width and pulse repetition interval of the intercepted signal are obtained by calculating the energy, and the carrier frequency and bandwidth of the intercepted signal are obtained by FFT.

[0044] Step 4: Generate a linear frequency modulated pulse signal identical to the intercepted signal based on the parameters of the intercepted signal, and use phase coding and cutting smart modulation to make it have both detection and jamming functions, and cache the generated detection and jamming integrated signal into RAM for subsequent transmission.

[0045] Step 5, realize the transmission and reception of the integrated detection and reception waveform signal. The RF data conversion module reads the waveform signal cached in the RAM and up-converts it to the frequency point where the other party's signal is located, and realizes the transmission through the RFSOC control power amplifier and antenna transmission component. After each transmission, the RF data conversion module collects its own detection echo signal, and uploads it to the PS end cache through DMA after down-conversion and extraction. Repeat the above pulse sending and receiving process according to the set number of pulse accumulation.

[0046] Step 6: After a radar coherent processing interval period ends, the PS end uploads the accumulated echo data to the host computer through the UDP protocol for storage and processing.

[0047] Furthermore, in step 1, the PS end completes the configuration of the clock through the serial port, which means writing the register value of the LMK clock management chip through the SPI serial port. The specific register value written can be calculated and generated using the TICS software based on the reference clock requirement of the RF data conversion module.

[0048] Furthermore, in step 1, the PS end configuring the RF data conversion module through the AXI bus refers to mixing control, and the mixing frequency of the RF data conversion module is configured by the PS end to achieve flexible control of the RF transceiver signal frequency.

[0049] Furthermore, the sub-band mixing frequency points in step 1 are obtained by dividing the frequency band of interest while ensuring that the bandwidth of each sub-band does not exceed the sampling bandwidth limit of the RF data conversion module, and the coverage of the frequency band is achieved by sampling several sub-bands.

[0050] Furthermore, the RF data conversion module in step 2 can be used to collect the opponent's signal and our detection echo signal within the RF frequency band by setting the AD sampling rate, down-mixing frequency, and extraction multiple; the module can be used to up-convert the generated integrated detection and stem waveform signal to the specified frequency for transmission by setting the DA sampling rate, up-mixing frequency, and interpolation multiple.

[0051] Furthermore, the pulse parameter estimation module in step 3 estimates the time domain parameters of the intercepted signal by using a power threshold method, and estimates the frequency domain parameters of the intercepted signal by using an FFTip core.

[0052] Furthermore, the phase coding cutting smart modulation described in step 4 is to cut the linear frequency modulation signal in the time domain, and then perform phase modulation through a phase coding sequence; so that the linear frequency modulation signal has the dual capabilities of detection and interference, and achieves high coherence with the opponent's radar signal while having strong random jump characteristics.

[0053] In order to further explain the technical solutions and effects adopted by the present invention to achieve the predetermined purpose of the invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific experimental examples.

[0054] Example

[0055] The effect of the present invention can be further demonstrated by the following experiments.

[0056] Hardware connection diagram for reference in the experiment Figure 1 The experimental hardware consists of the present invention, a microwave front-end TR antenna and a host computer.

[0057] The present invention realizes the core functions of integrated probe-dry waveform generation, acquisition, data transmission and control, and the microwave front-end TR antenna realizes the power amplification of the signal and the antenna transceiver function. The host computer sends parameters and receives echo signal data through the UDP network port to realize signal processing and data analysis.

[0058] The internal flow chart of the present invention refers to Figure 2 The present invention provides a probe-stem integrated signal generation and acquisition device and method based on RFSOC, comprising a parameter initialization module, a radio frequency data conversion module, a DMA transmission module, a pulse parameter estimation module, a probe-stem integrated waveform generation module, and a UDP transmission module.

[0059] Experimental scene construction diagram reference Figure 3 The experimental equipment includes: one device of the present invention, one Universal Software Radio Peripheral (USRP), two sets of microwave systems, and two metal corner anti-targets. Corner anti-target 1 is the target that we need to protect and is also the target that the opponent wants to detect. Corner anti-target 2 is the target that we need to detect. Corner anti-targets 1 and 2 have the same radar scattering cross section. During the experiment, corner anti-target 1 and corner anti-target 2 are lifted by the participants and move relative to the radar at a certain radial speed. The USRP simulates the opponent's radar and is placed on the left side of the scene to transmit LFM signals to detect corner anti-target 1. The present invention is placed on the right side of the scene, and transmits a probe-dry integrated signal to detect corner anti-target 2 while interfering with the opponent's radar's detection of corner anti-target 1.

[0060] Step 1: Turn on the USRP device, simulate the other party's radar to detect the diagonal anti-target 1, process the other party's radar echo that has not been interfered by the present invention through the host computer, and record the detection effect of the other party's radar.

[0061] Step 2: Turn on the present invention, intercept the opponent's LFM signal and generate a probe-dry integrated waveform, transmit the probe-dry integrated signal to detect the diagonal anti-target 2 while interfering with the opponent's radar's detection of the diagonal anti-target 1.

[0062] Step 3: Process the probe-stem integrated waveform signal detection echo collected and transmitted by the present invention through the host computer, and analyze the detection effect of the present invention.

[0063] Step 4: The host computer processes the detection echo data of the opponent's radar simulated by the USRP device under the interference of the present invention, and analyzes the interference effect of the present invention on the detection target of the opponent's radar.

[0064] Combine the following Figure 4 , Figure 5 and Figure 6 The effect of the present invention is further described with reference to the drawings.

[0065] Figure 4 It is a top view of the detection target distance-Doppler plane obtained after the host computer performs radar signal processing on the detection echo data of the probe-dry integrated waveform signal collected and transmitted by the present invention. The figure shows that the target distance is about 19 meters and the speed is about 4 meters per second, which is consistent with the actual test target parameters. This means that the present invention successfully detected the angular reverse target, verifying that the probe-dry integrated waveform signal it generated has effective target detection capabilities.

[0066] Figure 5 This is the detection result of the other party's radar on our target when the present invention is not activated. Our target can be clearly seen on the range-Doppler plane, indicating that the other party's radar can effectively detect our target under non-interference conditions. Figure 6 This is the result of the enemy's radar detecting our target after the present invention is activated. The target can no longer be seen on the range-Doppler plane, proving that the detection-interference integrated waveform signal generated by the present invention has an interference effect on the enemy's radar and successfully protects our target.

[0067] The above contents are further detailed descriptions of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. A probe-stem integrated signal generation and acquisition device based on RFSOC, characterized in that: include: RF data conversion module, used to realize bidirectional conversion between digital baseband signal and analog RF signal; This module realizes the sampling of RF analog signals through down-conversion and decimation processing. At the same time, this module up-converts the generated probe-dry integrated waveform signal to the specified frequency point; DMA transfer module, used to realize the communication between PL and PS in RFSOC chip; This module is used to forward the control instructions of the host computer, transmit the signals collected by the RF data conversion module to the PS end and save them in its memory; The pulse parameter estimation module is used to extract the necessary pulse parameters from the intercepted enemy radar signal and provide input basis for generating the integrated waveform of the probe and the dryer; The probe-stem integrated waveform generation module is used to generate LFM pulse signals and generate probe-stem integrated waveform signals by phase coding cutting smart modulation; UDP transmission module is used to realize data communication between RFSOC and the host computer.

2. The RFSOC-based integrated probe-dry signal generation and acquisition device according to claim 1, characterized in that: The pulse parameter estimation module consists of three parts: pulse determination, time domain parameter calculation, and frequency domain parameter calculation. The collected signal is modulated and the power is calculated. When the power is greater than the set threshold, it is determined that there is a pulse signal, the pulse start time and pulse end time are counted and recorded, and the pulse midpoint and pulse repetition period are calculated. The measurement of pulse width is based on power analysis, recording the maximum power point of the pulse and the end point where the maximum power value drops 3dB. The effective pulse width is twice the difference between the end point of the pulse and the midpoint of the pulse. The frequency domain parameter calculation is to perform spectrum estimation through fast Fourier transform. The real and imaginary parts of the FFT output are squared and added to form a power spectrum. The spectrum line with the largest amplitude in the power spectrum is searched, and the starting and ending spectrum lines where the power value drops by 3dB are calculated and searched. The signal carrier frequency is the median of the two, and the frequency domain bandwidth is the difference between the two.

3. The RFSOC-based integrated probe-dry signal generation and acquisition device according to claim 2, characterized in that: The maximum power search process is to use a sliding window to average a section of sampling points.

4. The RFSOC-based integrated probe-dry signal generation and acquisition device according to claim 1, characterized in that: The probe-stem integrated waveform generation module is specifically implemented as follows: according to the intercepted linear frequency modulation pulse signal parameters, a counter method is used to perform frequency stepping on the direct digital frequency synthesizer to generate a linear frequency modulation signal; according to the number of code elements sent by the host computer, a shift register is used to realize the movement from low to high bits and the XOR operation to generate the required binary code, and after the binary code is spread spectrum, the phase coding cutting and smart modulation of the linear frequency modulation pulse signal is realized; the generated probe-stem integrated waveform signal is cached in a random access memory.

5. The RFSOC-based integrated probe-stem signal generation and acquisition device according to claim 1, characterized in that: After completing the network port initialization process, the UDP transmission module establishes a network connection between the present invention and the host computer, and implements parameter sending from the host computer to the RFSOC and real-time echo data transmission from the RFSOC to the host computer through the UDP protocol.

6. An integrated signal generating method based on the device of claim 1, characterized in that: By intercepting the opponent's signal, an integrated waveform signal with dual functions of detection and interference is generated, so that the device has the functions of a radar detector and a jammer at the same time. The method includes the following steps: Step 1, device initialization and parameter delivery; after the equipment is turned on, the PS end establishes an initialization connection with the UDP network port of the host computer, and configures the clock chip through the SPI serial port to provide the required clock input for the RFSOC chip and the RF data conversion module; after the network port is connected, the host computer sends the number of encoding code elements, the number of detection pulse accumulation, and the signal frequency band information to the device through the UDP protocol. The PS end sends the received parameters to the PL end through the DMA transmission module, and configures the sub-band mixing frequency point of the RF data conversion module through the AXI protocol; Step 2: The RF data conversion module intercepts the signal in each sub-band in turn, obtains the digital baseband signal through RF sampling and down-conversion processing for subsequent pulse parameter estimation; Step 3, pulse detection and parameter estimation of the digital baseband signal; when it is determined that the opponent's pulse signal is intercepted, the pulse width and pulse repetition interval of the intercepted signal are obtained by calculating the energy, and the carrier frequency and bandwidth of the intercepted signal are obtained by FFT; Step 4: Generate a linear frequency modulation pulse signal identical to the intercepted signal according to the parameters of the intercepted signal, and use phase coding and cutting smart modulation to make it have both detection and jamming functions, and cache the generated detection and jamming integrated signal into RAM for subsequent transmission; Step 5, realize the transmission and reception of the integrated waveform signal of the probe and the dryer; the RF data conversion module reads the integrated waveform signal of the probe and the dryer cached in the RAM and up-converts it to the frequency point where the other party's signal is located, and controls the microwave front end and the TR antenna through the RFSOC to realize the transmission; after each transmission, the RF data conversion module collects the detection echo signal of the own side, and uploads it to the PS end cache through the DMA method after down-conversion and extraction processing; according to the set number of pulse accumulation, repeat the above pulse sending and receiving process; Step 6: After a radar CPI cycle ends, the PS uploads the accumulated echo data to the host computer through the UDP protocol for storage and processing.

7. The method according to claim 6, characterized in that The sub-band mixing frequency points in step 1 are obtained by dividing the frequency band of interest while ensuring that the bandwidth of each sub-band does not exceed the sampling bandwidth limit of the radio frequency data conversion module, and the coverage of the frequency band is achieved by sampling several sub-bands.

8. The method according to claim 6, characterized in that The RF data conversion module described in step 2 can be used to collect the opponent's signal and our detection echo signal within the RF frequency band by setting the AD sampling rate, down-mixing frequency, and extraction multiple; this module can be used to up-convert the generated integrated detection and stem waveform signal to the specified frequency for transmission by setting the DA sampling rate, up-mixing frequency, and interpolation multiple.

9. The method according to claim 6, characterized in that The pulse parameter estimation module in step 3 estimates the time domain parameters of the intercepted signal by using the power threshold method, and estimates the frequency domain parameters of the intercepted signal by using the FFTip core.

10. The method according to claim 6, characterized in that The phase coding cutting smart modulation described in step 4 is to cut the linear frequency modulation signal in the time domain, and then perform phase modulation through a phase coding sequence, so that the linear frequency modulation signal has the dual capabilities of detection and interference.

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