A radar system

Abstract

The present invention belongs to the technical field of radar monitoring, and particularly relates to a radar system. The technical solution adopted by the present invention is a radar system, comprising: a plurality of single-array radars and a processing core; wherein, the plurality of single-array radars are spliced into a radar array in a hemispherical structure, and each single-array radar can work independently; the processing core is connected to each single-array radar, and the processing core is used for processing the echo signals received by the single-array radars, and controlling the working state of the target single-array radar so that the radar array executes a side-scanning and side-searching working mode or a scanning plus tracking working mode. By arranging a plurality of single-array radars to form a radar array in a hemispherical structure, the radar array can achieve 360-degree horizontal coverage and -15-degree to 85-degree elevation coverage without using an assembly turntable, which can give full play to the advantages of beam agility of two-dimensional phased array radars and improve the concealment of the radar.

Description

Technical Field

[0001] The present invention belongs to the technical field of radar monitoring, and particularly relates to a radar system. Background Art

[0002] A phased array radar, i.e., a phase-controlled electronically scanned array radar, enables the radar to complete a full-airspace scan within 1 minute with its ability to quickly and accurately switch beams. A phased array radar is a radar array composed of a large number of identical radiation units. Each radiation unit is independently controlled by a wave control and a phase shifter in terms of phase and amplitude, and can obtain an accurate and predictable radiation pattern and beam pointing. When the radar operates, the transmitter distributes power to each antenna unit through a feeder network, and radiates energy through a large number of independent antenna units and performs power synthesis in space to form the required beam pointing.

[0003] A two-dimensional phased array radar adopts a two-dimensional phased array phase scanning system. The beam has beam agility in both azimuth and elevation, fundamentally solving various inherent problems of traditional mechanical scanning radars. Under the same aperture and operating wavelength, the reaction speed, target update rate, multi-target tracking ability, resolution, versatility, electronic counter-countermeasure ability, etc. of the phased array are far superior to those of traditional radars.

[0004] However, the azimuth and elevation coverage ranges of the current single-panel two-dimensional phased array radar are limited. It is difficult to achieve 0° to 360° omnidirectional coverage without installing a turntable, and the same is true for elevation coverage. Installing a turntable for a single-panel two-dimensional phased array radar cannot fully utilize the advantage of beam agility of the two-dimensional phased array radar, and the rotation of the turntable and the panel will reduce the radar's stealth. Summary of the Invention

[0005] In view of the above technical problems, the present invention proposes a radar system. In this application, multiple single-panel radars are arranged to form a radar array in a hemispherical structure. This radar array can achieve 360-degree horizontal coverage and -15-degree to 85-degree elevation coverage without using a turntable, which can fully utilize the advantage of beam agility of the two-dimensional phased array radar and improve the radar's stealth.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is a radar system, including: multiple single-panel radars and a processing core; wherein, the multiple single-panel radars are spliced into a radar array in a hemispherical structure, and each single-panel radar can work independently; the processing core is connected to each single-panel radar, and the processing core is used to process the echo signals received by the single-panel radars and control the working states of the target single-panel radars so that the radar array executes a side-scanning and side-search working mode or a scanning plus tracking working mode.

[0007] In some embodiments, the radar array includes: a first array plane ring, which is composed of multiple single array planes at the same horizontal height; a second array plane ring, located above the first array plane ring, which is composed of multiple single array planes at the same horizontal height; wherein, each array plane ring can achieve azimuth coverage from 0° to 360°; the second array plane ring forms an angle of 30° with the horizontal plane, and the elevation coverage range of the single array plane radar of the second array plane ring is from -15° to 75°; the first array plane ring forms an angle of 40° with the horizontal plane, and the elevation coverage range of the single array plane radar of the first array plane ring is from -5° to 85°.

[0008] In some embodiments, the single array plane radar includes at least four sub-array planes, and the sub-array planes are used to receive echo signals; a sum channel module, an azimuth difference channel module, a sidelobe blanking channel module, and an elevation difference channel module are also arranged on the single array plane radar; the sum channel module, the azimuth difference channel module, the sidelobe blanking channel module, and the elevation difference channel module are used to generate corresponding channel signals according to the echo signals received by each sub-array plane, and send the generated channel information to the processing core; the generated channel signals include: sum channel signal, azimuth difference channel signal, blanking channel information signal, and elevation difference channel signal.

[0009] In some embodiments, the processing core includes: a signal processing component, which is used to determine target track information according to the received channel signals; a control component, which is used to receive operation instructions and control the working state of the target single array plane radar according to the operation instructions so that the radar array executes a scan-while-search working mode or a scan-plus-track working mode.

[0010] In some embodiments, the signal processing component includes: an echo signal resolution module, which is used to perform MTD and CFAR processing on the sum channel information to obtain target echo signals from the echo signals collected by multiple single array plane radars; an effective echo signal recognition module, which is used to determine whether the target echo signal is an effective echo signal according to the distance information and Doppler gate position information in the target echo signal; a track condensation module, which is used to perform in-frame track condensation on the effective echo signals to form in-frame tracks; a track correction module, which is used to perform azimuth difference and elevation difference corrections on the in-frame tracks to obtain the final target track information.

[0011] In some embodiments, the effective echo signal recognition module includes: a first acquisition unit configured to acquire the distance information and the Doppler gate position information in the target echo signal; a first determination unit configured to determine first amplitude information corresponding to a position in the sum channel signal according to the distance information and the Doppler gate position information; a second determination unit configured to determine second amplitude information corresponding to a position in the blanking channel signal according to the distance information and the Doppler gate position information; and a third determination unit configured to determine a ratio between the first amplitude information and the second amplitude information, and when the ratio is greater than a first threshold, determine that the target echo signal is an effective echo signal.

[0012] In some embodiments, the plot correction module includes: a fourth determination unit configured to determine an azimuth difference correction value corresponding to a position in the azimuth difference channel signal according to the distance information and the Doppler gate position information; a fifth determination unit configured to determine an elevation difference correction value corresponding to a position in the elevation difference channel signal according to the distance information and the Doppler gate position information; and a correction unit configured to correct the in-frame plot according to the azimuth difference correction value and the elevation difference correction value to obtain final target plot information.

[0013] In some embodiments, the control component includes: a mode determination module configured to determine an operating mode of the radar system according to an externally input instruction; and a parameter configuration module configured to perform parameter configuration on each single array radar in the radar system according to the operating mode determined by the mode determination module.

[0014] In some embodiments, in the case of the scan-while-search operating mode, the parameter configuration module causes each target single array radar to generate an independent beam to perform scanning detection on the azimuth corresponding to each target single array radar.

[0015] In some embodiments, in the case of the scan-and-track operating mode; the scan-and-track operating mode includes: single array rough tracking and multi-array joint tracking; when performing single array rough tracking on a target to be tracked, the processing core determines, in real time according to the elevation difference information and the azimuth difference information in the target plot information of the target to be tracked, a target single array radar corresponding to the target to be tracked, and controls the target single array radar to track the target to be tracked through the parameter configuration module. When multi-array joint tracking of the target to be tracked is required, the processing core determines, in real time according to the elevation difference information and the azimuth difference information in the target plot information of the target to be tracked, multiple target single array radars corresponding to the target to be tracked, and controls the multiple target single array radars to track the target to be tracked through the parameter configuration module.

[0016] Advantages of the present invention: By arranging multiple single-array radars to form a radar array with a hemispherical structure, this radar array can achieve 360-degree horizontal coverage and -15-degree to 85-degree pitch coverage without using an assembly turntable, which can give full play to the advantages of beam agility of two-dimensional phased array radars and improve the concealment of the radar. Brief Description of the Drawings

[0017] The scope of the present disclosure can be better understood by reading the detailed description of the exemplary embodiments below in conjunction with the accompanying drawings. The accompanying drawings included are:

[0018] Figure 1 It is a schematic diagram of the overall structure of a radar system provided by an embodiment of the present application;

[0019] Figure 2 It is a schematic diagram of the angles between the first array ring and the second array ring and the horizontal plane provided by an embodiment of the present application;

[0020] Figure 3 It is a block diagram of the structure of the processing core provided by an embodiment of the present application;

[0021] Figure 4 It is a block diagram of the structure of the effective echo signal recognition module provided by an embodiment of the present application;

[0022] Figure 5 It is a block diagram of the structure of the track correction module provided by an embodiment of the present application.

[0023] In the figure: 1 - single-array radar, 2 - second array ring, 3 - first array ring. Detailed Embodiments

[0024] In order to make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limitations on the present application. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0025] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments. However, it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0026] If similar descriptions such as "first / second / third" appear in the application documents, the following description shall be added. In the following description, the terms "first / second / third" only distinguish similar objects and do not represent a specific sorting of the objects. Understandably, "first / second / third" can be interchanged in a specific order or sequence when permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0028] Regarding the problems existing in the background technology, such as Figure 1 As shown, the present application provides a radar system. The radar system includes a plurality of single-panel radars 1 and a processing core. Among them, the plurality of single-panel radars 1 are spliced into a radar array in a hemispherical structure, and each single-panel radar can work independently.

[0029] In some embodiments, as Figure 2 As shown. The radar array includes: a first panel ring 3, which is composed of a plurality of single panels at the same horizontal height. A second panel ring 2, located above the first panel ring 3, is composed of a plurality of single panels at the same horizontal height. Among them, each panel ring can achieve 0° to 360° azimuth coverage. The second panel ring 2 forms an angle of 30° with the horizontal plane, and the elevation coverage range of the single-panel radar 1 of the second panel ring 2 is -15° to 75°. The first panel ring 3 forms an angle of 40° with the horizontal plane, and the elevation coverage range of the single-panel radar 1 of the first panel ring 3 is -5° to 85°.

[0030] The existence of the panel ring enables the radar array of the present application to achieve 360-degree horizontal coverage without configuring a turntable. The existence of multiple panel rings enables the elevation angle of the radar array of the present application to have a wider range and also reduces the search blind area of common radars.

[0031] In some embodiments, the single-panel radar 1 includes at least four sub-panels, and the sub-panels are used to receive echo signals. A sum channel module, an azimuth difference channel module, a sidelobe blanking channel module, and an elevation difference channel module are also provided on the single-panel radar 1. The sum channel module, the azimuth difference channel module, the sidelobe blanking channel module, and the elevation difference channel module are used to generate corresponding channel signals according to the echo signals received by each sub-panel and send the generated channel information to the processing core. The generated channel signals include: sum channel signal, azimuth difference channel signal, blanking channel information signal, and elevation difference channel signal.

[0032] Each single-panel radar 1 has the functions of transmitting beams and receiving echoes. The internal working principles of each single-panel radar 1 are the same. When each single-panel radar 1 transmits a beam, after receiving a command, it generates an intermediate-frequency excitation signal for the radar to work according to the control command. After the excitation signal is amplified by the frequency synthesizer, it is further amplified and phase-shifted through a power distribution network and a TR module, and then fed into the corresponding antenna radiation unit of the single-panel radar 1, and through spatial power synthesis, high-gain transmission at a specified angle is achieved.

[0033] In this application, in addition to the radar array, there is also a processing core associated with the radar array. The processing core is connected to each single-panel radar 1. The processing core is used to process the echo signals received by the single-panel radar 1, and to control the working state of the target single-panel radar 1 so that the radar array executes a side-scan-and-search working mode or a scan-and-track working mode. The channel signals formed on the single-panel radar 1 are sent to the processing core for processing by the processing core.

[0034] As Figure 3 shown, in some embodiments, the processing core includes: a signal processing component, which is used to determine target track information according to the received channel signals. A control component, which is used to receive operation instructions and control the working state of the target single-panel radar 1 according to the operation instructions so that the radar array executes a side-scan-and-search working mode or a scan-and-track working mode.

[0035] In this application, the four sub-panels of each single-panel radar 1 can receive echo signals, and the received echo signals are subjected to phase-shifting and power synthesis processing through a sum channel module, an azimuth difference channel module, a sidelobe blanking channel module, and an elevation difference channel module to form a sum channel signal, an azimuth difference channel signal, a blanking channel information signal, and an elevation difference channel signal. These channel signals are received by a receiver, and the receiver processes these channel signals through down-conversion, filtering, and amplification to form intermediate-frequency signals. Finally, the intermediate-frequency information is sent to the signal processing component. The signal processing component will first perform AD sampling, decimation filtering, pulse compression, and data rearrangement on the intermediate-frequency signals, so that the intermediate-frequency signals become low-frequency signals, and then analyze the low-frequency signals. Since the actual content in this application does not involve signal frequency changes, in this application, the sum channel signal, the azimuth difference channel signal, the blanking channel information signal, and the elevation difference channel signal are uniformly used to replace their corresponding signals of various frequencies.

[0036] As Figure 3 shown. In some embodiments, the signal processing component includes: an echo signal resolution module, an effective echo signal recognition module, a track condensation module, and a track correction module.

[0037] The echo signal resolution module is used to perform MTD and CFAR processing on the sum channel information to obtain the target echo signal from the echo signals collected by multiple single-panel radars 1. Since the radar array of this application consists of multiple single-panel radars 1, each single-panel radar 1 will receive the corresponding echo signal, so there will be many echo signals existing simultaneously. The existing processing method for echo signals is for a single echo signal, while there are many echo signals in this application. Therefore, the signal processing component in this application can process multiple echo signals simultaneously.

[0038] When processing the echo signal, it is necessary to first distinguish whether the echo signal is a target echo signal. Therefore, the echo signal resolution module in this application needs to first perform coherent integration (MTD) on the sum channel signals of each single-panel radar 1 to improve the signal-to-noise ratio of the sum channel signals. Then, perform constant false alarm rate detection (CFAR) on the sum channel signals, and finally screen out the target echo signals from the echo signals of multiple single-panel radars 1 and remove the false alarms in the echo signals.

[0039] The effective echo signal recognition module is used to determine whether the target echo signal is an effective echo signal according to the distance information and Doppler gate position information in the target echo signal.

[0040] After determining and screening out the target echo signals, it is necessary to further screen the screened target echo signals to screen out the effective echo signals among them. Therefore, this application further screens the target echo signals through the effective echo signal recognition module.

[0041] As Figure 4 shown. In some embodiments, the effective echo signal recognition module includes: a first acquisition unit, a first determination unit, a second determination unit, and a third determination unit.

[0042] The first acquisition unit is used to acquire the distance information and the Doppler gate position information in the target echo signal. Each target echo signal contains the distance signal and Doppler gate position information of the echo signal.

[0043] The first determination unit is used to determine the first amplitude information at the corresponding position in the sum channel signal according to the distance information and the Doppler gate position information. The second determination unit is used to determine the second amplitude information at the corresponding position in the blanking channel signal according to the distance information and the Doppler gate position information. The third determination unit is used to determine the ratio between the first amplitude information and the second amplitude information. When the ratio is greater than the first threshold, it is determined that the target echo signal is an effective echo signal.

[0044] Among the four-channel signals, there is corresponding information at the corresponding distance and Doppler gate position. Therefore, in this application, the first amplitude information at the corresponding position in the sum-channel signal is determined through the distance information and the Doppler gate position information. At the same time, the second amplitude information at the corresponding position in the stealth-channel signal is determined through the distance information and the Doppler gate position information. And the first amplitude information and the second amplitude information are compared. When the first amplitude information is greater than the second amplitude information by a certain value, the target echo signal is considered a valid target echo signal. Otherwise, the target echo signal is an invalid target signal and should be discarded.

[0045] The track condensation module is used to perform in-frame track condensation on the valid echo signals to form in-frame tracks. The track correction module is used to correct the azimuth difference and elevation difference of the in-frame tracks to obtain the final target track information.

[0046] As Figure 5 shown. The correction of the in-frame tracks is mainly to correct the elevation difference and azimuth difference of the in-frame tracks. Therefore, in some embodiments, the track correction module includes: a fourth determination unit, a fifth determination unit, and a correction unit.

[0047] The fourth determination unit is used to determine the azimuth difference correction value at the corresponding position in the azimuth difference channel signal according to the distance information and the Doppler gate position information. The fifth determination unit is used to determine the elevation difference correction value at the corresponding position in the elevation difference channel signal according to the distance information and the Doppler gate position information. The correction unit is used to correct the in-frame tracks according to the azimuth difference correction value and the elevation difference correction value to obtain the final target track information.

[0048] Because in each signal channel, there are corresponding values at the corresponding positions. Therefore, when correcting the azimuth difference of the in-frame tracks, the fourth determination unit is used to confirm the azimuth difference correction value corresponding to the azimuth difference channel signal according to the distance information and the Doppler gate position information in the valid echo signals. Similarly, the fifth determination unit is used to determine the corresponding elevation difference correction value in the elevation difference channel signal. Finally, the correction module is used to correct the in-frame tracks according to the elevation difference correction value and the azimuth difference correction value to obtain the final target track information.

[0049] The function of the radar itself is to scan, search, and track targets. And there will be false alarms during the scanning and searching process. Therefore, it is necessary for the signal processing component to eliminate false alarms and then obtain the target track information of real targets. The signal processing component sends the target track information to the control component, and the control component tracks the target according to the target track information by controlling the radar array.

[0050] Therefore, in some embodiments, the control component includes: a mode determination module and a parameter configuration module.

[0051] The mode determination module is used to determine the working mode of the radar system according to an externally input instruction. The parameter configuration module is used to configure parameters for each single-panel radar 1 in the radar system according to the working mode determined by the mode determination module.

[0052] After the radar system in this application is powered on, each sub-unit first completes the BIT test. Under the control of the control component, the radar sends corresponding working parameters to each single-panel radar 1, such as working frequency points, beam pointing, and modulation methods. There are two working modes for the radar system in this application. One is the Track While Scan (TWS) mode, and the other is the Track And Scan (TAS) mode.

[0053] In the case of the Track While Scan working mode, the parameter configuration module enables each target single-panel radar 1 to generate independent beams to scan and detect the azimuth corresponding to each target single-panel radar 1.

[0054] The Track And Scan working mode includes two methods. One is single-panel rough tracking, and the other is multi-panel joint tracking. Therefore, in some embodiments, in the case of the Track And Scan working mode:

[0055] When performing single-panel rough tracking on the target to be tracked, the processing core determines, in real time based on the pitch difference information and azimuth difference information in the target track information of the target to be tracked, a target single-panel radar 1 corresponding to the target to be tracked, and controls the target single-panel radar 1 to track the target to be tracked through the parameter configuration module.

[0056] When multi-panel joint tracking of the target to be tracked is required, the processing core determines, in real time based on the pitch difference information and azimuth difference information in the target track information of the target to be tracked, multiple target single-panel radars 1 corresponding to the target to be tracked, and controls the multiple target single-panel radars 1 to track the target to be tracked through the parameter configuration module.

[0057] When using multi-panel joint tracking of a target, the tracking beam pointings of multiple jointly tracking single-panel radars 1 are uniformly coordinated so that they point to the tracking target, in order to further improve the detection probability and increase the angular resolution. Moreover, the jointly tracking single-panel radars 1 will form unified sum channel information, azimuth difference channel information, pitch difference channel information, and hidden channel information from the received echo information. And these channel information will be sent to the signal processing component, and the signal processing component will determine the target track information of the target.

[0058] Therefore, when performing multi-panel joint tracking, multiple optimal adjacent single-panel radars 1 will be determined in real time according to the pitch difference information and azimuth difference information in the target track information to continuously track the target.

[0059] Therefore, in this application, multiple single-array radars 1 are arranged to form a radar array with a hemispherical structure. This radar array can achieve 360-degree horizontal coverage and -15-degree to 85-degree pitch coverage without using an assembly turntable, which can give full play to the advantages of beam agility of two-dimensional phased array radars and improve the concealment of the radar.

[0060] In the present invention, the radar array adopts a semi-spherical and multi-layer installation method, and is provided with a single-array radar independent working mode and a multi-array combined working mode. The multi-array combined working can improve the angular accuracy of tracking targets.

[0061] Based on the foregoing embodiments, an embodiment of this application provides a radar system. Each module included in the system, as well as each unit included in each module, can be implemented by a processor in a computer device; of course, it can also be implemented by specific logic circuits. During implementation, the processor can be a central processing unit (CPU, Central Processing Unit), a microprocessor (MPU, Microprocessor Unit), a digital signal processor (DSP, Digital Signal Processing), or a field programmable gate array (FPGA, Field Programmable Gate Array), etc.

[0062] Each module in the above-mentioned radar system can be implemented in whole or in part by software, hardware, and their combination. The above-mentioned modules can be embedded in or independent of the processor in the form of hardware, or stored in the memory of the processing device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to the above-mentioned modules. It should be noted that the division of modules in the embodiments of this application is illustrative, only a logical function division, and there may be other division methods in actual implementation.

[0063] Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in this application may include at least one of non-volatile and volatile memories. The non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical memory, etc. The volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0064] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics may be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the magnitudes of the serial numbers of the above processes do not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The serial numbers of the embodiments of the present application above are only for description and do not represent the advantages or disadvantages of the embodiments.

[0065] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0066] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units; they may be located in one place or distributed to multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0067] In addition, each functional unit in the embodiments of the present application may be all integrated in a processing unit, or each unit may be separately used as a unit, or two or more units may be integrated in one unit; the above integrated unit may be implemented in the form of hardware, or in the form of a hardware plus software functional unit.

[0068] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above method embodiments; and the foregoing storage medium includes: various media such as removable storage devices, read-only memories (ROMs), magnetic disks or optical discs that can store program codes.

[0069] As described above, it is only the implementation mode of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims described above.

Claims

1. A radar system, characterized in that, Including: Multiple single-array radars and a processing core; Among them, the multiple single-array radars are spliced into a radar array with a hemispherical structure, and each single-array radar can work independently; The radar array includes: A first array ring, composed of multiple single-arrays at the same horizontal height; A second array ring, located above the first array ring, composed of multiple single-arrays at the same horizontal height; Among them, each array ring can achieve a horizontal coverage of 0° to 360°; The second array ring forms an angle of 30° with the horizontal plane, and the pitch coverage range of the single-array radar of the second array ring is -15° to 75°; The first array ring forms an angle of 40° with the horizontal plane, and the pitch coverage range of the single-array radar of the first array ring is -5° to 85°; The processing core is connected to each single-array radar. The processing core is used to process the echo signals received by the single-array radar and control the working state of the target single-array radar so that the radar array executes the side-scan-and-search working mode or the scan-and-track working mode.

2. The radar system according to claim 1, characterized in that, The single-array radar includes at least four sub-arrays, and the sub-arrays are used to receive echo signals; A sum channel module, an azimuth difference channel module, a sidelobe blanking channel module, and a pitch difference channel module are also provided on the single-array radar; The sum channel module, the azimuth difference channel module, the sidelobe blanking channel module, and the pitch difference channel module are used to generate corresponding channel signals according to the echo signals received by each sub-array and send the generated channel information to the processing core; The generated channel signals include: sum channel signal, azimuth difference channel signal, blanking channel information signal, and pitch difference channel signal.

3. The radar system according to claim 2, characterized in that, The processing core includes: A signal processing component, used to determine target track information according to the received channel signals; A control component, used to receive operation instructions and control the working state of the target single-array radar according to the operation instructions so that the radar array executes the side-scan-and-search working mode or the scan-and-track working mode.

4. The radar system according to claim 3, characterized in that, The signal processing component includes: An echo signal resolution module, used to perform MTD and CFAR processing on the sum channel information to obtain target echo signals from the echo signals collected by multiple single-array radars; An effective echo signal recognition module, used to determine whether the target echo signal is an effective echo signal according to the distance information and Doppler gate position information in the target echo signal; A track condensation module, used to perform in-frame track condensation on the effective echo signals to form in-frame tracks; A track correction module, used to correct the azimuth difference and pitch difference of the in-frame tracks to obtain the final target track information.

5. The radar system according to claim 4, characterized in that, The effective echo signal recognition module includes: A first acquisition unit, used to acquire the distance information and the Doppler gate position information in the target echo signal; A first determination unit, used to determine the first amplitude information at the corresponding position in the sum channel signal according to the distance information and the Doppler gate position information; A second determination unit, used to determine the second amplitude information at the corresponding position in the blanking channel signal according to the distance information and the Doppler gate position information; A third determination unit, configured to determine a ratio between the first amplitude information and the second amplitude information, and when the ratio is greater than a first threshold, determine the target echo signal as a valid echo signal.

6. The radar system according to claim 5, characterized in that, The plot correction module includes: A fourth determination unit, configured to determine an azimuth difference correction value at a corresponding position in the azimuth difference channel signal according to the distance information and the Doppler gate position information; A fifth determination unit, configured to determine an elevation difference correction value at a corresponding position in the elevation difference channel signal according to the distance information and the Doppler gate position information; A correction unit, configured to correct the in-frame plot according to the azimuth difference correction value and the elevation difference correction value to obtain final target plot information.

7. The radar system according to claim 3, characterized in that, The control component includes: A mode determination module, configured to determine an operating mode of the radar system according to an externally input instruction; A parameter configuration module, configured to perform parameter configuration on each single-panel radar in the radar system according to the operating mode determined by the mode determination module.

8. The radar system according to claim 7, wherein, In the case of the side-scan-and-search operating mode, the parameter configuration module causes each target single-panel radar to generate an independent beam to perform scanning detection on the azimuth corresponding to each target single-panel radar.

9. The radar system according to claim 7, wherein, In the case of the scan-and-track operating mode; The scan-and-track operating mode includes: single-panel rough tracking and multi-panel joint tracking; When performing single-panel rough tracking on a target to be tracked, the processing core determines, in real time according to the elevation difference information and the azimuth difference information in the target plot information of the target to be tracked, a target single-panel radar corresponding to the target to be tracked, and controls the target single-panel radar to track the target to be tracked through the parameter configuration module; When multi-panel joint tracking of the target to be tracked is required, the processing core determines, in real time according to the elevation difference information and the azimuth difference information in the target plot information of the target to be tracked, multiple target single-panel radars corresponding to the target to be tracked, and controls the multiple target single-panel radars to track the target to be tracked through the parameter configuration module.

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