Target Detection System and Method Integrating Secondary Radar Inquiry

Abstract

The present invention discloses a target detection system and method integrating secondary radar interrogation, which relates to the technical field of radar. When the target detection system integrating secondary radar interrogation of the present application performs secondary radar interrogation, the interrogation information is modulated onto the target detection waveform, so as to simultaneously realize the target detection function of the primary radar and the interrogation function of the secondary radar by using one waveform, effectively utilize the signal transceiver components resources and channel resources in the radar system, and also improve the adaptability and accuracy of the radar system.

Description

Technical Field

[0001] The present invention relates to the technical field of radar, and in particular, to a target detection system and method integrating secondary radar interrogation. Background Art

[0002] Primary radar works based on the reflection mechanism of electromagnetic waves emitted by the radar to the target, can actively detect the target and locate the target to achieve target detection. Secondary radar, with the cooperation of a ground interrogator and an airborne transponder, completes the signal transmission and acquisition through two radiations of "interrogation - response". Secondary radar is widely used in fields such as air traffic control. The composition principle and basic component modules of the secondary radar ground interrogator and the primary radar are roughly the same.

[0003] Currently, the primary radar and the secondary radar are independent systems with separate architectures, having problems such as difficult target association and matching, insufficient anti - interference ability, and low resource utilization rate. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a target detection system and method integrating secondary radar interrogation, which can improve the integration degree of system equipment and the resource utilization efficiency.

[0005] On the one hand, an embodiment of the present invention provides a target detection system integrating secondary radar interrogation, including a signal transceiver component, an integrated waveform generation module, an interrogation information generation module, a multi - channel data acquisition module, a target echo processing module, a response signal processing module, and a data processing and display control terminal;

[0006] The interrogation information generation module generates interrogation information based on the input instruction of the data processing and display control terminal;

[0007] The integrated waveform generation module is used to modulate the interrogation information into the target detection waveform to obtain a detection - interrogation integrated waveform;

[0008] The signal transceiver component is used to process and transmit the detection - interrogation integrated waveform, and receive and process the detection target echo and the target response signal returned by the detection target;

[0009] The multi - channel data acquisition module is used to perform analog - to - digital conversion on the detection target echo and the target response signal and output them to the target echo processing module or the response signal processing module accordingly;

[0010] The target echo processing module performs first - analysis processing based on the detection target echo to obtain target detection information;

[0011] The response signal processing module performs second analysis and processing based on the target response signal to obtain target response information;

[0012] The data processing and display control terminal is used to perform associated fusion on the target detection information and the target response information to obtain a target track result.

[0013] According to some embodiments of the present invention, the target detection system integrating secondary radar interrogation further includes a frequency synthesizer module and a timing control module;

[0014] The frequency synthesizer module is used to provide excitation signals, system clocks, and local oscillator signals for the integrated waveform generation module, the signal transceiver component, and the multi-channel data acquisition module;

[0015] The timing control module is used to generate the timing required for radar operation and control the multi-channel data acquisition module, the frequency synthesizer module, and the integrated waveform generation module;

[0016] The timing control module communicates with the data processing and display control terminal to receive commands and return status information from the data processing and display control terminal.

[0017] According to some embodiments of the present invention, the signal transceiver component includes an antenna array, a multi-channel transceiver component, and a multi-channel up / down conversion component;

[0018] The antenna array transmits or receives electromagnetic waves within a certain frequency range in a certain polarization mode and beam direction;

[0019] The multi-channel transceiver component is used to perform power amplification on the detection and interrogation integrated waveform, perform low-noise amplification on the detection target echo and the target response signal, and programmatically control the phase of the detection and interrogation integrated waveform and the gain of the detection target echo and the target response signal;

[0020] The multi-channel up / down conversion component is used to filter and up-convert the detection and interrogation integrated waveform, and filter and down-convert the detection target echo and the target response signal.

[0021] According to some embodiments of the present invention, the integrated waveform generation module includes a programmable array logic unit;

[0022] The programmable array logic unit is used to configure the integrated waveform. Among them, for the generation of parametric integrated signals based on linear frequency modulation and phase-coded signals, a parametric waveform generation structure based on phase accumulation is adopted; for the generation of non-linear frequency modulation integrated signals, a waveform generation structure based on direct digital beam synthesis or digital up-conversion structure is adopted.

[0023] On the other hand, an embodiment of the present invention further provides a target detection method integrating secondary radar interrogation, which is applied to the target detection system integrating secondary radar interrogation as described in the previous embodiments. The target detection method integrating secondary radar interrogation includes the following steps:

[0024] Generate interrogation information based on an input instruction;

[0025] Modulate the interrogation information into a target detection waveform to obtain a detection and interrogation integrated waveform;

[0026] Process and transmit the detection and interrogation integrated waveform to receive and process the detection target echo and target response signal returned by the detection target;

[0027] After performing analog-to-digital conversion on the detection target echo and the target response signal, output them to the target echo processing module or the response signal processing module accordingly;

[0028] Perform first analysis and processing based on the detection target echo to obtain target detection information;

[0029] Perform second analysis and processing based on the target response signal to obtain target response information;

[0030] Correlate and fuse the target detection information and the target response information to obtain a target track result.

[0031] According to some embodiments of the present invention, the step of performing analog-to-digital conversion on the detection target echo and the target response signal and outputting them to the target echo processing module or the response signal processing module accordingly includes the following steps:

[0032] Gate the target detection echo wave gate to perform analog-to-digital conversion on the detection target echo and output it to the target echo processing module;

[0033] Gate the response signal processing wave gate to perform analog-to-digital conversion on the target response signal and output it to the response signal processing module.

[0034] According to some embodiments of the present invention, the target detection echo wave gate and the response signal processing wave gate are obtained through the following steps:

[0035] Set the target detection echo wave gate according to the detection target distance;

[0036] Set the response signal processing wave gate according to the timing position of the target detection echo wave gate and the response signal delay time agreed with the detection target.

[0037] According to some embodiments of the present invention, the step of performing first analysis and processing based on the detection target echo to obtain target detection information includes the following steps:

[0038] The echo of the detection target is subjected to accumulation detection, parameter estimation, and track condensation processing to obtain target detection information.

[0039] According to some embodiments of the present invention, the second analysis and processing based on the target response signal to obtain target response information includes the following steps:

[0040] The target response signal is subjected to signal demodulation, decoding, and signal track processing to obtain target response information.

[0041] According to some embodiments of the present invention, the echo of the detection target and the target response signal are obtained in the following manner:

[0042] The surface of the detection target reflects the integrated detection and interrogation waveform to form an echo waveform of the detection target;

[0043] The response system of the detection target receives the integrated detection and interrogation waveform, extracts the interrogation information in the integrated detection and interrogation waveform, and generates and sends a target response signal according to the interrogation information.

[0044] At least one of the above technical solutions of the present invention has the following advantages or beneficial effects: When the target detection system integrating the secondary radar interrogation performs the secondary radar interrogation, the interrogation information is modulated into the target detection waveform, so as to simultaneously realize the target detection function of the primary radar and the interrogation function of the secondary radar by using one waveform, effectively utilizing the signal transceiver components resources and channel resources in the radar system, and also improving the adaptability and accuracy of the radar system. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a schematic diagram of a target detection system integrating the secondary radar interrogation provided by an embodiment of the present invention;

[0046] Figure 2 is a schematic diagram of the transceiver timing of the system for the detection target provided by an embodiment of the present invention;

[0047] Figure 3 is a processing flow chart of the system for the echo of the detection target and the target response signal provided by an embodiment of the present invention;

[0048] Figure 4 is a flow chart of a target detection method integrating the secondary radar interrogation provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0050] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, left, right, etc., is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0051] In the description of the embodiments of the present invention, if terms such as first and second are used, they are only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.

[0052] In the description of the embodiments of the present invention, the functions / operations mentioned in the block diagrams may not occur in the order mentioned in the operation diagrams. For example, depending on the functions / operations involved, two consecutive blocks shown may actually be executed substantially simultaneously or the blocks can sometimes be executed in the reverse order. In addition, the embodiments presented and described in the flowcharts of the present invention are provided by way of example for the purpose of providing a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logical flows presented herein. Alternative embodiments are contemplated, where the order of various operations is changed and where sub-operations described as part of a larger operation are executed independently.

[0053] In addition, although the present invention is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the functions and / or features described may be integrated in a single physical device and / or software module, or one or more functions and / or features may be implemented in separate physical devices or software modules. It can also be understood that a detailed discussion of the actual implementation of each module is not necessary for understanding the present invention. More precisely, considering the attributes, functions and internal relationships of the various functional modules in the devices disclosed herein, the actual implementation of the modules will be understood within the ordinary skills of an engineer. Therefore, those skilled in the art can implement the present invention as set forth in the claims without undue experimentation. It can also be understood that the specific concepts disclosed are merely illustrative and are not intended to limit the scope of the present invention, which is determined by the full scope of the appended claims and their equivalents.

[0054] Referring to Figure 1 , an embodiment of the present invention provides a target detection system integrating secondary radar interrogation (hereinafter referred to as the system), which includes a signal transceiver component, an integrated waveform generation module, an interrogation information generation module, a multi-channel data acquisition module, a target echo processing module, a response signal processing module, and a data processing and display control terminal;

[0055] The interrogation information generation module generates interrogation information based on the input instruction of the data processing and display control terminal;

[0056] The integrated waveform generation module is used to modulate the interrogation information into the target detection waveform to obtain a detection and interrogation integrated waveform;

[0057] The signal transceiver component is used to process and transmit the detection and interrogation integrated waveform, and receive and process the detection target echo and the target response signal returned by the detection target;

[0058] The multi-channel data acquisition module is used to perform analog-to-digital conversion on the detection target echo and the target response signal and then output them to the target echo processing module or the response signal processing module accordingly to separate the detection target echo and the target response signal;

[0059] The target echo processing module performs first analysis and processing based on the detection target echo to obtain target detection information;

[0060] The response signal processing module performs second analysis and processing based on the target response signal to obtain target response information;

[0061] The data processing and display control terminal is used to correlate and fuse the target detection information and the target response information to obtain the target track result.

[0062] Specifically, the interrogation information generation module of the system receives the control command from the data processing and display control terminal and generates interrogation information, and the integrated waveform generation module generates a detection and interrogation integrated waveform for primary radar detection and for secondary radar interrogation according to the interrogation information. The signal transceiver component performs filtering, up-conversion, power amplification and other processing on the detection and interrogation integrated waveform and then transmits the detection and interrogation integrated waveform.

[0063] The surface of the detection target reflects the detection and interrogation integrated waveform to form a detection target echo. At the same time, the information processing device of the detection target receives the detection and interrogation integrated waveform, extracts the interrogation information therein, and generates and sends a target response signal based on the interrogation information.

[0064] Referring to Figure 3, the signal transceiver component of this system receives the echo of the detection target and the target response signal, and processes the echo of the detection target and the target response signal through low-noise amplification, gain control, filtering, down-conversion, etc. The multi-channel data acquisition module uses the method of gating to perform analog-to-digital conversion on the echo of the detection target and the target response signal processed by the signal transceiver component, and then outputs them to the target echo processing module or the response signal processing module correspondingly, so as to separate the echo of the detection target and the target response signal. The target echo processing module performs digital beamforming, long-time accumulation detection, parameter estimation, target recognition, track coalescence, etc. on the echo of the detection target to obtain target detection information. The response signal processing module performs signal demodulation, decoding, etc. on the target response signal to obtain target response information. The data processing and display control terminal performs information association and fusion on the data such as the target tracks of the primary radar and the secondary radar according to the target detection information and the target response information to obtain the track result of the detection target.

[0065] In some embodiments, in combination with Figure 2 , the principle of processing the echo of the detection target and the target response signal by using the method of gating in this embodiment is described. Figure 2 FIG. is a schematic diagram of the transceiver timing for the detection target provided by the embodiment of the present invention. After the integrated detection and interrogation waveform transmitted by the system reaches the detection target, on the one hand, the detection target surface reflects the integrated detection and interrogation waveform, and on the other hand, the response system of the target receives the integrated detection and interrogation waveform, extracts the interrogation information therein, and generates a target response signal. The response signal is controlled and sent out by the response system after receiving the integrated detection and interrogation waveform. Therefore, there is a certain time delay between the target response signal and the reflected echo of the detection target directly on the surface of the detection target. This system negotiates and agrees with the detection target on the response signal delay time between the target response signal and the echo of the detection target. This system sets the target detection echo gate according to the distance of the detection target, and then sets the response signal processing gate according to the agreed response signal delay time. The multi-channel data acquisition module acquires the waveform and performs analog-to-digital conversion and then outputs it to the target echo processing module when the current timing is at the position of the target detection echo gate, and acquires the waveform and performs analog-to-digital conversion and then outputs it to the response signal processing module when the current timing is at the position of the response signal processing gate, so as to gate the echo of the detection target and the target response signal to the target echo processing module and the response signal processing module respectively.

[0066] In some embodiments, after the multi-channel data acquisition module performs analog-to-digital conversion on the echo of the detection target or the target response signal, it can further perform digital quadrature demodulation and down-conversion, and then output the data.

[0067] In some embodiments, the data processing and display control terminal can receive control commands to control the working state and working mode of the radar; monitor the radar state, collect and summarize the state information of each part of the radar, and monitor whether the radar system is normal; receive the target track information output by the target echo processing module and the response information processing module, perform information integration, correlation, and fusion tracking to obtain the track result; and perform visual display of the processing result.

[0068] According to some embodiments of the present invention, referring to Figure 1 , the target detection system integrating secondary radar interrogation of the embodiments of the present invention further includes a frequency synthesizer module and a timing control module;

[0069] The frequency synthesizer module is used to provide excitation signals, system clocks, and local oscillator signals for the integrated waveform generation module, signal transceiver components, and multi-channel data acquisition module. The frequency synthesizer module can adopt a direct frequency synthesis technology system.

[0070] The timing control module is used to generate the timing required for the operation of the radar, and control the multi-channel data acquisition module, frequency synthesizer module, and integrated waveform generation module through a control interface. The timing control module communicates with the data processing and display control terminal, receives the commands and feedback status information of the data processing and display control terminal. The communication mode between the timing control module and the data processing and display control terminal can be wireless network or wired network communication.

[0071] According to some embodiments of the present invention, referring to Figure 1 , the signal transceiver components include an antenna array, multi-channel transceiver components, and multi-channel up / down conversion components.

[0072] The antenna array transmits or receives electromagnetic waves within a certain frequency range in a certain polarization mode and beam direction.

[0073] The multi-channel transceiver components include components such as a beam control unit, a control circuit, a register, a transceiver module, and a power modulator. The control circuit converts the serial control code input by the beam control unit into a parallel code and stores it in the register. After being driven by a drive circuit, it outputs to control the phase shifters, attenuators, and switches of the transceiver module to achieve signal transceiver. The power modulator completes the pulse modulation of the channel power under the control of a timing pulse signal. Through the cooperation of the components of the multi-channel transceiver components, the functions that can be completed include: amplifying the power of the transmitted signal during transmission; amplifying the received signal with low noise during reception; the beam control unit programming to control the phase of the transmitted signal and the gain of the received signal; switching between the transmission state and the silent state under the control of the transceiver signal; configuring the load state mode, in which no transmission or reception occurs and the transceiver is in an isolated state.

[0074] In the transmitting state, the multi-channel up / down conversion component filters and up-converts the integrated detection and interrogation waveform, and in the receiving state, it filters and down-converts the echo of the detected target and the target response signal.

[0075] According to some embodiments of the present invention, the integrated waveform generation module includes a programmable array logic unit and a digital-to-analog conversion unit. The digital-to-analog conversion unit can be a high-speed DAC chip, and the programmable array logic unit can be a high-performance FPGA chip. The FPGA chip supports the software configuration of the integrated waveform. Among them, for the generation of parametric integrated signals based on linear frequency modulation and phase-coded signals, a parametric waveform generation structure based on phase accumulation is adopted. For the generation of more complex signals such as non-linear frequency modulation, an arbitrary waveform generation structure based on direct digital beamforming and digital up-conversion can be used, that is, the programmable array logic unit configures and stores integrated interrogation digital signals with different encodings, determines the waveform storage address according to the interrogation information to be sent, cyclically reads the corresponding integrated interrogation digital signal according to the waveform storage address, and performs interpolation, filtering, and mixing processing on the integrated interrogation digital signal and then sends it to the digital-to-analog conversion unit to generate the integrated detection and interrogation waveform.

[0076] According to some specific embodiments of the present invention, in the traditional radar system of the embodiments of the present invention, an interrogation information generation module and a response information processing module are added. During the transmission process, the interrogation information is modulated into the target detection waveform to achieve the integration of target detection and target interrogation. During the reception process, the echo of the detected target and the target response signal are separated, the target detection points and the target response results are obtained, and then information synthesis, correlation, and fusion are performed, so that the interrogation and response processing is completed while the target is detected. The embodiments of the present invention help to share information and resources, improve the adaptability, reliability, comprehensiveness, and detection efficiency of the system. In addition, the radar aperture resources are utilized to improve the confidentiality and anti-jamming ability of target interrogation.

[0077] The embodiments of the present invention also provide a target detection method integrating secondary radar interrogation, which is applied to the target detection system integrating secondary radar interrogation as described in the previous embodiments. Referring to Figure 4 The target detection method integrating secondary radar interrogation of the embodiments of the present invention includes, but is not limited to, steps S110, S120, S130, S140, S150, and S160.

[0078] Step S110, generating interrogation information based on an input instruction;

[0079] Step S120, modulating the interrogation information into the target detection waveform to obtain an integrated detection and interrogation waveform;

[0080] Step S130: Process and transmit an integrated detection and interrogation waveform to receive and process the detection target echo and the target response signal returned by the detection target;

[0081] Step S140: After performing analog-to-digital conversion on the detection target echo and the target response signal, output them to the target echo processing module or the response signal processing module accordingly;

[0082] Step S150: Perform a first analysis and processing based on the detection target echo to obtain target detection information;

[0083] Step S160: Perform a second analysis and processing based on the target response signal to obtain target response information;

[0084] Step S170: Correlate and fuse the target detection information and the target response information to obtain the target track result.

[0085] According to some embodiments of the present invention, in step S140, after performing analog-to-digital conversion on the detection target echo and the target response signal and outputting them to the target echo processing module or the response signal processing module accordingly, the following steps are included:

[0086] Step S210: Gate the target detection echo wave gate to perform analog-to-digital conversion on the detection target echo and output it to the target echo processing module;

[0087] Step S220: Gate the response signal processing wave gate to perform analog-to-digital conversion on the target response signal and output it to the response signal processing module.

[0088] According to some embodiments of the present invention, the target detection echo wave gate and the response signal processing wave gate in step S210 and step S220 are obtained through the following steps:

[0089] Step S310: Set the target detection echo wave gate according to the detection target distance;

[0090] Step S320: Set the response signal processing wave gate according to the timing position of the target detection echo wave gate and the response signal delay time agreed with the detection target.

[0091] According to some embodiments of the present invention, in step S150, performing a first analysis and processing based on the detection target echo to obtain target detection information includes the following steps:

[0092] Step S410: Perform accumulation detection, parameter estimation, and tracklet condensation processing on the detection target echo to obtain target detection information.

[0093] According to some embodiments of the present invention, in step S160, performing a second analysis and processing based on the target response signal to obtain target response information includes the following steps:

[0094] Step S510: Demodulate, decode, and process the target response signal to obtain the target response information.

[0095] According to some embodiments of the present invention, the detection target echo and the target response signal emitted by the detection target received in this system are obtained through the following methods:

[0096] Step S610: The surface of the detection target reflects the integrated detection and interrogation waveform to form a detection target echo waveform.

[0097] Step S620: The response system of the detection target receives the integrated detection and interrogation waveform, extracts the interrogation information in the integrated detection and interrogation waveform, and generates and sends a target response signal according to the interrogation information.

[0098] It can be understood that the content in the above embodiments of the target detection system integrating the secondary radar interrogation is applicable to the embodiments of this method. The functions specifically implemented in the embodiments of this method are the same as those in the above embodiments of the target detection system integrating the secondary radar interrogation, and the beneficial effects achieved are also the same as those in the above embodiments of the target detection system integrating the secondary radar interrogation.

[0099] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0100] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

[0101] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent deformations or substitutions without violating the spirit of the present invention, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An integrated target detection system that combines secondary radar interrogation, characterized in that It includes a signal transceiver component, an integrated waveform generation module, an interrogation information generation module, a multi-channel data acquisition module, a target echo processing module, a response signal processing module, and a data processing and display control terminal; The interrogation information generation module generates interrogation information based on the input instructions of the data processing and display control terminal; The integrated waveform generation module is used to modulate the interrogation information into the target detection waveform to obtain a detection and interrogation integrated waveform; The signal transceiver component is used to process and transmit the detection and interrogation integrated waveform, and receive and process the detection target echo and the target response signal returned by the detection target; The multi-channel data acquisition module is used to perform analog-to-digital conversion on the detection target echo and the target response signal and output them to the target echo processing module or the response signal processing module accordingly; The target echo processing module performs first analysis and processing based on the detection target echo to obtain target detection information; The response signal processing module performs second analysis and processing based on the target response signal to obtain target response information; The data processing and display control terminal is used to correlate and fuse the target detection information and the target response information to obtain a target track result.

2. The target detection system integrating secondary radar interrogation as claimed in claim 1, wherein The target detection system integrating secondary radar interrogation also includes a frequency synthesis module and a timing control module; The frequency synthesis module is used to provide excitation signals, system clocks, and local oscillator signals for the integrated waveform generation module, the signal transceiver component, and the multi-channel data acquisition module; The timing control module is used to generate the timing required for radar operation and control the multi-channel data acquisition module, the frequency synthesis module, and the integrated waveform generation module; The timing control module communicates with the data processing and display control terminal to receive the commands and return status information of the data processing and display control terminal.

3. The target detection system integrating secondary radar interrogation as claimed in claim 1, wherein The signal transceiver component includes an antenna array, a multi-channel transceiver component, and a multi-channel up / down conversion component; The antenna array transmits or receives electromagnetic waves within a certain frequency range in a certain polarization mode and beam direction; The multi-channel transceiver component is used to amplify the power of the detection and interrogation integrated waveform, perform low-noise amplification on the detection target echo and the target response signal, and programmatically control the phase of the detection and interrogation integrated waveform and the gain of the detection target echo and the target response signal; The multi-channel up / down conversion component is used to filter and up-convert the detection and interrogation integrated waveform, and filter and down-convert the detection target echo and the target response signal.

4. The target detection system integrating secondary radar interrogation as claimed in claim 1, wherein The integrated waveform generation module includes a programmable array logic unit; The programmable array logic unit is used to configure the integrated waveform. Among them, for the generation of parametric integrated signals based on linear frequency modulation and phase-coded signals, a parametric waveform generation structure based on phase accumulation is adopted; for the generation of non-linear frequency modulation integrated signals, a waveform generation structure based on direct digital beamforming or digital up-conversion structure is adopted.

5. A target detection method integrating secondary radar interrogation, characterized in that, Applied to the target detection system integrating secondary radar interrogation as described in any one of claims 1 to 4, the method for integrating secondary radar interrogation in the target detection method includes the following steps: Generate interrogation information based on the input instruction; Modulate the interrogation information into the target detection waveform to obtain a detection and interrogation integrated waveform; Process and transmit the detection and interrogation integrated waveform to receive and process the detection target echo and the target response signal returned by the detection target; After performing analog-to-digital conversion on the detection target echo and the target response signal, output them to the target echo processing module or the response signal processing module accordingly; Perform first analysis and processing based on the detection target echo to obtain target detection information; Perform second analysis and processing based on the target response signal to obtain target response information; Correlate and fuse the target detection information and the target response information to obtain the target track result.

6. The target detection method integrating secondary radar interrogation according to claim 5, characterized in that, The step of performing analog-to-digital conversion on the detection target echo and the target response signal and outputting them to the target echo processing module or the response signal processing module accordingly includes the following steps: Gate the target detection echo wavegate to perform analog-to-digital conversion on the detection target echo and output it to the target echo processing module; Gate the response signal processing wavegate to perform analog-to-digital conversion on the target response signal and output it to the response signal processing module.

7. The target detection method integrating secondary radar interrogation as claimed in claim 6, wherein The target detection echo wavegate and the response signal processing wavegate are obtained through the following steps: Set the target detection echo wavegate according to the distance of the detection target; Set the response signal processing wavegate according to the timing position of the target detection echo wavegate and the response signal delay time agreed with the detection target.

8. The target detection method integrating secondary radar interrogation as claimed in claim 5, wherein, The step of performing first analysis and processing based on the detection target echo to obtain target detection information includes the following steps: Perform accumulation detection, parameter estimation, and tracklet condensation processing on the detection target echo to obtain target detection information.

9. The target detection method integrating secondary radar interrogation as claimed in claim 5, wherein The step of performing second analysis and processing based on the target response signal to obtain target response information includes the following steps: Perform signal demodulation, decoding, and signal tracklet processing on the target response signal to obtain target response information.

10. The target detection method integrating secondary radar interrogation as claimed in claim 5, wherein, The detection target echo and the target response signal are obtained through the following methods: The surface of the detection target reflects the detection and interrogation integrated waveform to form a detection target echo; The response system of the detection target receives the detection and interrogation integrated waveform, extracts the interrogation information in the detection and interrogation integrated waveform, and generates and sends a target response signal according to the interrogation information.

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