Full-digital signal-level radar modeling simulation system and method

Abstract

The invention relates to the technical field of radars, in particular to a full-digital signal-level radar modeling simulation system and method, and the system comprises a radar system modeling module which is used for carrying out the static modeling of a radar system; the simulation display module is used for simulating a display control interface of the radar system and has a display function and a control function; the guide control module is used for dynamically simulating the working process of the radar system; the echo generation module is used for generating echo signals of the radar system in various working modes by receiving the relative states of the radar, the target, clutter, interference and terrain, wherein the relative states are transmitted through beam scheduling in the guide control module; the signal processing module is used for receiving the echo signal transmitted by the echo generation module and generating trace point data through signal processing; according to the technical scheme provided by the invention, the defects that accurate performance evaluation on the radar system is difficult and dynamic simulation cannot be carried out on the working process of the radar system in various modes and scenes in the prior art can be effectively overcome.

Description

Technical Field

[0001] This invention relates to the field of radar technology, specifically to a fully digital signal-level radar modeling and simulation system and method. Background Technology

[0002] With the iteration of radar technology and the development of software and hardware tools, a wide variety of complex simulation software and application modules have been developed for radar systems both domestically and internationally. These have effectively replaced the development of engineering verification prototypes, saving significant research and testing costs and greatly promoting scientific research and production. However, due to the increasingly complex functions of radar and the natural and electromagnetic environments in which it operates, existing radar modeling and simulation systems have several shortcomings, mainly in the following two aspects:

[0003] 1) The simulation link is simple and lacks system design integration.

[0004] Radar is a complex integrated sensor system involving numerous functional modules and intricate logical relationships. Existing radar modeling and simulation systems, in an effort to highlight primary and secondary issues, often employ simplified models for radar simulation and extract specific sub-links of the radar system to represent each functional module. For example, radar coverage is simplified to an ellipse corresponding to a 3dB beamwidth, antenna patterns are simplified to array factors, and receivers are simplified to systems only related to noise figures. This results in a discrete distribution between the overall system and its subsystems / modules, lacking logical relationships between the system and its subsystems / modules. The overall system cannot be flattened to integrate the various subsystems, leading to a single operating mode and inaccurate performance evaluations.

[0005] 2) The simulation model is more theoretical and conceptual, but lacks versatility and engineering application.

[0006] Existing radar countermeasures simulation systems in China, namely signal-level and functional-level simulation systems, differ significantly in their focus and functionality. Functional-level simulation systems prioritize statistical and tactical indicators such as radar detection power and accuracy, neglecting detailed components; while signal-level simulation systems focus on the results obtained after the echo signal enters the system for processing, ignoring the impact of system design on the echo signal. A common problem with both types of simulation systems is their emphasis on working principles and mathematical models, making it difficult to simulate the beam scheduling, waveform design, and information processing (such as signal processing, data processing, and integrated display and control) processes of actual radar systems under various modes and scenarios. Therefore, they cannot serve radar system modeling and cannot provide digital prototype support for radar system design and performance optimization. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a fully digital signal-level radar modeling and simulation system and method, which can effectively overcome the shortcomings of the existing technology in that it is difficult to accurately evaluate the performance of the radar system and cannot dynamically simulate the working process of the radar system in various modes and scenarios.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] The fully digital signal-level radar modeling and simulation system includes a front-end and a back-end. The front-end includes a radar system modeling module, a simulation display module, and a guidance and control module. The back-end includes an echo generation module, a signal processing module, and a data processing module.

[0012] The radar system modeling module provides users with a human-computer interaction interface for static modeling of radar systems.

[0013] The analog display module provides users with a human-machine interface to simulate the display and control interface of the radar system, and has display and control functions.

[0014] The guidance and control module provides a human-machine interface for users to dynamically simulate the working process of the radar system;

[0015] The echo generation module receives the relative states between the radar and the target, clutter, interference, and terrain transmitted by the beam scheduling in the guidance and control module, and generates echo signals of the radar system in various operating modes.

[0016] The signal processing module receives the echo signal transmitted by the echo generation module and generates dot data through signal processing.

[0017] The data processing module receives the point data transmitted by the signal processing module and outputs the track information to the analog display module through track processing.

[0018] Preferably, the functions of the radar system modeling module include:

[0019] 1) Radar System Modeling: The radar system modeling interface is used for basic parameter settings and tactical indicator analysis, including radar system selection, radar system parameter settings, radar antenna parameter settings, radar waveform and operating mode settings, system wave position arrangement, azimuth / elevation coverage map design and radar accuracy analysis, and generates radar system design files.

[0020] 2) Phased array antenna design: Provide users with phased array antenna design models, capable of simulating one-dimensional phased arrays, two-dimensional phased arrays, multi-faceted arrays, and phased arrays of different shapes. By adopting different weighting methods, it can simulate the radiation patterns of the entire array and auxiliary antennas, achieve the specified shape of the radiation pattern and low sidelobe shaping, and superimpose amplitude and phase error and failure models on the phased array antenna to evaluate the gain and sidelobe performance of the phased array antenna;

[0021] 3) Signal Processing and Data Processing Design: Based on the radar waveforms and operating modes generated by radar system modeling, the signal processing design establishes corresponding signal processing flows. Adaptable signal processing engineering for the actual radar system is generated through code generation and remote compilation. The signal processing design interface is used to implement a series of operations, including design, development, and testing. All algorithm modules exist in the software model library as generalized, loosely coupled components, and data links are connected using logical connections or configuration. The data processing design provides users with access to track processing elements, including filters and track start parameters, facilitating adjustments to track processing strategies. Finally, the signal processing design and data processing design are combined to generate a processing flow design document.

[0022] 4) Data and Configuration: During static modeling, the radar system design files, processing flow design files, and radiation patterns are saved; during dynamic simulation, the radar system generated by the model is sent to the guidance and control module, echo generation module, signal processing module, and data processing module.

[0023] The radar system modeling module is deployed on a high-performance computer.

[0024] Preferably, the analog display module has the following functions:

[0025] 1) Display function: including display of P / H display area, A display area, flight parameter table area, control area, tactical operation area and radar site information;

[0026] 2) Control functions: Simulates the control of the radar dynamic simulation by real radar display and control, including control of power on / off, signal processing, data processing and anti-interference measures;

[0027] The analog display module is deployed on a high-performance computer.

[0028] Preferably, the functions of the instruction control module include:

[0029] 1) Simulation control: Used to complete the editing of mission scenarios and situation simulation. First, the radar site and clutter environment are deployed. Then, the simulation process is simulated over time, and the geometric relationship between the radar and the target, clutter, interference, and terrain is calculated.

[0030] 2) Beam scheduling: Based on the situation simulation and the transmission time and status, the corresponding beams are scheduled according to the system beam position arrangement or tracking mode to drive the generation of echo signals;

[0031] The instruction and control module is deployed on a high-performance computer.

[0032] Preferably, the echo generation module receives the relative states between the radar and the target, clutter, interference, and terrain transmitted by the beam scheduling in the guidance and control module, and generates echo signals of the radar system in various operating modes. In order to improve the real-time performance of echo signal transmission, the echo signal is output to the signal processing module through shared memory.

[0033] The echo generation module is deployed on the GPU of a high-performance server.

[0034] Preferably, the signal processing module receives the echo signal transmitted by the echo generation module through shared memory, and completes signal processing operations including digital beamforming, digital pulse compression, anti-interference, MTI / MTD, sidelobe cancellation / shadow removal, clutter suppression, constant false alarm rate detection, azimuth / elevation angle measurement, and spot convergence, generating spot data, and outputting the spot data to the data processing module through the network;

[0035] The signal processing module is deployed on the CPU of a high-performance server. It is an adaptive engineering executable file for the radar system, generated by code generation and remote compilation during the signal processing design in the radar system modeling module, and is automatically updated as the radar is deployed.

[0036] Preferably, the data processing module receives the point data transmitted by the signal processing module through the network, completes the track processing operations including track initiation, point-track association and filtering tracking, generates track information, and outputs the track information to the analog display module through the network;

[0037] The data processing module is deployed on the CPU of a high-performance server, while the filters and trajectory start parameters for trajectory processing are configured by the analog display module.

[0038] A fully digital signal-level radar modeling and simulation method is applied to the aforementioned fully digital signal-level radar modeling and simulation system. The static modeling process of this method includes the following steps:

[0039] S11. The radar system modeling module performs static modeling of the radar system. During this process, the user sets basic parameters and performs tactical indicator analysis in the radar system modeling interface, including radar system selection, radar system parameter settings, radar antenna parameter settings, radar waveform and operating mode settings, system wavelet arrangement, azimuth / elevation coverage map design, and radar accuracy analysis. It then generates a radar system design file, which is saved via data and configuration. Simultaneously, the signal processing design, based on the radar waveform and operating mode, establishes signal processing operations including digital beamforming, digital pulse compression, anti-jamming, MTI / MTD, sidelobe cancellation / shadowing, clutter suppression, constant false alarm rate (CFAR) detection, azimuth / elevation angle measurement, and spot convergence. Through code generation and remote compilation, it generates an adaptive signal processing engineering file for the actual radar system. The user sets track processing elements, including filters and track start parameters, through data processing design. Finally, combining the signal processing design and data processing design, a processing flow design file is generated and saved via data and configuration.

[0040] S12. Encapsulate the radar system design documents and processing flow design documents to form a typical radar system digital prototype. After the digital prototype is generated, users can still edit it.

[0041] S13. After completing the static modeling, users can test the radar system's detection performance against various targets in various natural and electromagnetic environments.

[0042] A fully digital signal-level radar modeling and simulation method is applied to the aforementioned fully digital signal-level radar modeling and simulation system. The dynamic simulation process of this method includes the following steps:

[0043] S21. Users can edit radar mission scenarios through the guidance and control module, including editing radar deployment and mission type, determining the radar's working scenario, setting target, clutter and interference parameters according to mission requirements, and completing radar environment modeling.

[0044] S22. The echo generation module performs real-time calculations on the relative relationships between the radar and the target, clutter, interference, and terrain, and calls up the corresponding radiation patterns, waveforms, and wave position arrangements. It also superimposes broadband / narrowband propagation effects and multipath effects, and generates the radar's working timing sequence and corresponding working waveforms based on the radar system parameters and working mode, generating baseband I / Q signals for the target, clutter, interference, and terrain.

[0045] S23. The signal processing module performs signal processing operations on the baseband I / Q signal, including digital beamforming, digital pulse compression, anti-interference, MTI / MTD, sidelobe cancellation / shadowing, clutter suppression and constant false alarm rate detection. It also performs range measurement, angle measurement, velocity measurement and spot convergence on the target, generates spot data, and sends the spot data to the data processing module.

[0046] S24. The data processing module performs track processing operations, including track initiation, point-to-point correlation, and filtering tracking, generates track information, and outputs the track information to the simulation display module via the network.

[0047] S25, the simulation display module displays the target track point information formed by the radar during the dynamic simulation process.

[0048] (III) Beneficial Effects

[0049] Compared with existing technologies, the fully digital signal-level radar modeling and simulation system and method provided by this invention have the following advantages:

[0050] 1) This invention establishes a full-link radar system modeling and simulation platform. Through static modeling and dynamic simulation, it can simulate the working process of radar system in various modes and scenarios in real time / near real time.

[0051] 2) This invention relates to a radar static modeling and performance evaluation system, wherein the radar static modeling covers radar system architecture, radar system parameters, microwave link, simulation of main antenna and auxiliary antenna, signal processing and data processing design, etc., and the performance evaluation covers radar elevation angle power analysis, radar azimuth shielding analysis, radar detection accuracy analysis, etc., and the radar system formed by static modeling can be directly loaded during dynamic simulation.

[0052] 3) This invention relates to a radar dynamic simulation system that closely resembles actual equipment. It can directly load a radar system formed by static modeling through scene design, and realize the dynamic and engineering simulation of the radar system's working process from working mode and mode switching, target / clutter / interference echo signal generation, signal processing, data processing to integrated display and control. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0054] Figure 1 This is a schematic diagram of the fully digital signal-level radar modeling and simulation system in this invention;

[0055] Figure 2 This is a diagram of the radar system modeling interface in this invention;

[0056] Figure 3 This is an interface diagram of the radar antenna parameter settings in this invention;

[0057] Figure 4 This is an interface diagram showing the radar waveform and operating mode settings in this invention.

[0058] Figure 5 This is an interface diagram showing the system wave position arrangement in this invention;

[0059] Figure 6 This is a diagram of the directional pattern simulation interface in this invention;

[0060] Figure 7 This is a diagram of the signal processing design interface in this invention.

[0061] Figure 8 This is an interface diagram of the simulation display module in this invention;

[0062] Figure 9 This is an interface diagram of the control module in this invention;

[0063] Figure 10 This is a schematic diagram illustrating the working principle of the fully digital signal-level radar modeling and simulation system in this invention.

[0064] Figure 11 This is a flowchart illustrating the static modeling process of the fully digital signal-level radar modeling and simulation method in this invention.

[0065] Figure 12 This is a flowchart illustrating the dynamic simulation process of the fully digital signal-level radar modeling and simulation method in this invention. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0067] The following describes the specific functional modules of the fully digital signal-level radar modeling and simulation system provided by this invention, using concrete examples (such as...). Figure 1 As shown, it includes a front-end and a back-end. The front-end includes a radar system modeling module, a simulation display module, and a guidance and control module. The back-end includes an echo generation module, a signal processing module, and a data processing module.

[0068] The radar system modeling module provides users with a human-computer interaction interface for static modeling of radar systems.

[0069] The analog display module provides users with a human-machine interface to simulate the display and control interface of the radar system, and has display and control functions.

[0070] The guidance and control module provides a human-machine interface for users to dynamically simulate the working process of the radar system;

[0071] The echo generation module receives the relative states between the radar and the target, clutter, interference, and terrain transmitted by the beam scheduling in the guidance and control module, and generates echo signals of the radar system in various operating modes.

[0072] The signal processing module receives the echo signal transmitted by the echo generation module and generates dot data through signal processing.

[0073] The data processing module receives the point data transmitted by the signal processing module and outputs the track information to the analog display module through track processing.

[0074] The functions of the radar system modeling module include:

[0075] 1) Radar system modeling: Radar system modeling interface (e.g., Figure 2 (As shown) is used for basic parameter settings and tactical indicator analysis, including radar system selection, radar system parameter settings, and radar antenna parameter settings (such as...). Figure 3 As shown), radar waveform and operating mode settings (such as...) Figure 4 As shown), the system wavelet arrangement (as shown) Figure 5 As shown, the radar system design includes azimuth / elevation coverage map design and radar accuracy analysis, and generates radar system design documents.

[0076] 2) Phased Array Antenna Design: Provides users with phased array antenna design models, capable of simulating one-dimensional phased arrays, two-dimensional phased arrays, multi-faceted arrays, and phased arrays of different shapes. By employing different weighting methods, it can simulate the radiation patterns of the entire array and auxiliary antennas, achieving radiation pattern (e.g., Figure 6 By superimposing amplitude and phase error and failure models onto the phased array antenna using the specified shape and low sidelobe shaping (as shown), the gain and sidelobe performance of the phased array antenna can be evaluated.

[0077] 3) Signal Processing and Data Processing Design: Based on the radar waveforms and operating modes generated by radar system modeling, the signal processing design establishes corresponding signal processing flows. Adaptive signal processing engineering for the actual radar system is generated through code generation and remote compilation. The signal processing design interface (e.g., ...) is also included. Figure 7(As shown) is used to implement a series of operations including design, development and testing. All algorithm modules exist in the software model library in the form of generalized loosely coupled components, and data links are realized through logical connections or configuration. The data processing design opens up track processing elements, including filters and track start parameters, to users, so that users can adjust track processing strategies. Finally, the signal processing design and data processing design are combined to generate a processing flow design document.

[0078] 4) Data and Configuration: During static modeling, the radar system design files, processing flow design files, and radiation patterns are saved; during dynamic simulation, the radar system generated by the model is sent to the guidance and control module, echo generation module, signal processing module, and data processing module.

[0079] The radar system modeling module is deployed on a high-performance computer.

[0080] II. Analog display module (such as...) Figure 8 (As shown) It has the following functions:

[0081] 1) Display function: including display of P / H display area, A display area, flight parameter table area, control area, tactical operation area and radar site information;

[0082] 2) Control functions: Simulates the control of the radar dynamic simulation by real radar display and control, including control of power on / off, signal processing, data processing and anti-interference measures;

[0083] The analog display module is deployed on a high-performance computer.

[0084] III. Guidance and control module (such as...) Figure 9 (As shown) It has the following functions:

[0085] 1) Simulation control: Used to complete the editing of mission scenarios and situation simulation. First, the radar site and clutter environment are deployed. Then, the simulation process is simulated over time, and the geometric relationship between the radar and the target, clutter, interference, and terrain is calculated.

[0086] 2) Beam scheduling: Based on the situation simulation and the transmission time and status, the corresponding beams are scheduled according to the system beam position arrangement or tracking mode to drive the generation of echo signals;

[0087] The instruction and control module is deployed on a high-performance computer.

[0088] IV. The echo generation module receives the relative states between the radar and the target, clutter, interference, and terrain transmitted by the beam scheduling in the guidance and control module, and generates echo signals of the radar system in various operating modes. In order to improve the real-time performance of echo signal transmission, the echo signal is output to the signal processing module through shared memory.

[0089] The echo generation module is deployed on the GPU of a high-performance server.

[0090] V. The signal processing module receives the echo signal transmitted by the echo generation module through shared memory, and completes signal processing operations including digital beamforming, digital pulse compression, anti-interference, MTI / MTD, sidelobe cancellation / shadow removal, clutter suppression, constant false alarm rate detection, azimuth / elevation angle measurement and spot convergence, generates spot data, and outputs the spot data to the data processing module through the network.

[0091] The signal processing module is deployed on the CPU of a high-performance server. It is an adaptive engineering executable file for the radar system, generated by code generation and remote compilation during the signal processing design in the radar system modeling module, and is automatically updated as the radar is deployed.

[0092] VI. The data processing module receives the point data transmitted by the signal processing module through the network, completes the track processing operations including track initiation, point-track association and filtering tracking, generates track information, and outputs the track information to the analog display module through the network.

[0093] The data processing module is deployed on the CPU of a high-performance server, while the filters and trajectory start parameters for trajectory processing are configured by the analog display module.

[0094] The following describes the specific process of static modeling in the fully digital signal-level radar modeling and simulation method provided by this invention, using concrete examples (e.g.) Figure 10 and Figure 11 (As shown).

[0095] I. The radar system modeling module performs static modeling of the radar system. During this process, users can set basic parameters and analyze tactical indicators in the radar system modeling interface, including radar system selection (such as DBF system of "one-dimensional phase scanning + mechanical scanning", two-dimensional phased array, multi-faceted array, etc.), radar system parameter settings (such as transmit power, receive noise figure, A / D parameters, receive link gain, etc.), radar antenna parameter settings (such as antenna size, array configuration, transmit gain, receive gain, transmit / receive sidelobe level, concealment and cancellation channels, etc.), radar waveform (such as repetition period, signal bandwidth, pulse width, accumulation mode, etc.) and operating mode settings, system wavelet arrangement, azimuth / elevation coverage map design, and more. Radar accuracy analysis is performed, and radar system design documents are generated and saved via data and configuration. Simultaneously, signal processing design, based on radar waveforms and operating modes, establishes signal processing operations including digital beamforming, digital pulse compression, anti-jamming, MTI / MTD, sidelobe cancellation / shadowing, clutter suppression, constant false alarm rate (CFAR) detection, azimuth / elevation angle measurement, and spot convergence. Adaptive signal processing engineering for the actual radar system is generated through code generation and remote compilation. Users set track processing elements, including filters and track start parameters, through data processing design. Finally, combining signal processing design and data processing design generates a processing flow design document, which is also saved via data and configuration.

[0096] Second, the radar system design documents and processing flow design documents are packaged to form a typical radar system digital prototype. After the digital prototype is generated, users can still edit it (such as modifying the working waveform, adding processing branches, deleting working modes, etc.).

[0097] Third, after completing the static modeling, users can test the radar system's detection performance against various targets in various natural and electromagnetic environments.

[0098] The following describes the specific process of dynamic simulation of the fully digital signal-level radar modeling and simulation method provided by this invention, using concrete examples (e.g.) Figure 10 and Figure 12 (As shown).

[0099] 1. Users can edit radar mission scenarios through the command and control module, including editing radar deployment and mission type, determining the radar's working scenario (such as air surveillance TWS, TAS, anti-jamming, etc.), and setting target, clutter, and interference parameters according to mission requirements (including target parameters such as target quantity, target trajectory, target motion parameters, target RCS and model, clutter parameters such as clutter environment type, statistical model, and spectrum model, and interference parameters such as interference type, interference bandwidth, and interference power), and complete radar environment modeling.

[0100] 2. The echo generation module performs real-time calculations on the relative relationships between the radar and the target, clutter, interference, and terrain, and calls up the corresponding radiation patterns, waveforms, and wave position arrangements. It also superimposes broadband / narrowband propagation effects and multipath effects, and generates the radar's working timing sequence and corresponding working waveforms based on the radar system parameters and working mode, thus generating baseband I / Q signals for the target, clutter, interference, and terrain.

[0101] 3. The signal processing module performs signal processing operations on the baseband I / Q signals, including digital beamforming, digital pulse compression, anti-interference, MTI / MTD, sidelobe cancellation / shadowing, clutter suppression and constant false alarm rate detection. It also performs range measurement, angle measurement, velocity measurement and spot convergence on the target, generates spot data, and sends the spot data to the data processing module.

[0102] IV. The data processing module performs track processing operations, including track initiation, point-to-point correlation, and filtering tracking, generates track information, and outputs the track information to the simulation display module via the network.

[0103] V. The simulation display module displays the target track point information formed by the radar during the dynamic simulation process.

[0104] In the technical solution of this application, the above-mentioned static modeling process and dynamic simulation process can work independently to complete the modeling and simulation of various multifunctional radar systems, and can also complete tasks such as the construction, design verification and optimization of radar system digital prototypes under data-driven conditions.

[0105] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully digital signal-level radar modeling and simulation system, characterized in that: It includes a front-end and a back-end. The front-end includes a radar system modeling module, a simulation display module, and a guidance and control module. The back-end includes an echo generation module, a signal processing module, and a data processing module. The radar system modeling module provides users with a human-computer interaction interface for static modeling of radar systems. The analog display module provides users with a human-machine interface to simulate the display and control interface of the radar system, and has display and control functions. The guidance and control module provides a human-machine interface for users to dynamically simulate the working process of the radar system; The echo generation module receives the relative states between the radar and the target, clutter, interference, and terrain transmitted by the beam scheduling in the guidance and control module, and generates echo signals of the radar system in various operating modes. The signal processing module receives the echo signal transmitted by the echo generation module and generates dot data through signal processing. The data processing module receives the point data transmitted by the signal processing module and outputs the track information to the analog display module through track processing.

2. The fully digital signal-level radar modeling and simulation system according to claim 1, characterized in that: The functions of the radar system modeling module include: 1) Radar System Modeling: The radar system modeling interface is used for basic parameter settings and tactical indicator analysis, including radar system selection, radar system parameter settings, radar antenna parameter settings, radar waveform and operating mode settings, system wave position arrangement, azimuth / elevation coverage map design and radar accuracy analysis, and generates radar system design files. 2) Phased array antenna design: Provide users with phased array antenna design models, capable of simulating one-dimensional phased arrays, two-dimensional phased arrays, multi-faceted arrays, and phased arrays of different shapes. By adopting different weighting methods, it can simulate the radiation patterns of the entire array and auxiliary antennas, achieve the specified shape of the radiation pattern and low sidelobe shaping, and superimpose amplitude and phase error and failure models on the phased array antenna to evaluate the gain and sidelobe performance of the phased array antenna; 3) Signal Processing and Data Processing Design: Based on the radar waveforms and operating modes generated by radar system modeling, the signal processing design establishes corresponding signal processing flows. Adaptable signal processing engineering for the actual radar system is generated through code generation and remote compilation. The signal processing design interface is used to implement a series of operations, including design, development, and testing. All algorithm modules exist in the software model library as generalized, loosely coupled components, and data links are connected using logical connections or configuration. The data processing design provides users with access to track processing elements, including filters and track start parameters, facilitating adjustments to track processing strategies. Finally, the signal processing design and data processing design are combined to generate a processing flow design document. 4) Data and Configuration: During static modeling, the radar system design files, processing flow design files, and radiation patterns are saved; during dynamic simulation, the radar system generated by the model is sent to the guidance and control module, echo generation module, signal processing module, and data processing module. The radar system modeling module is deployed on a high-performance computer.

3. The fully digital signal-level radar modeling and simulation system according to claim 2, characterized in that: The functions of the analog display module include: 1) Display function: including display of P / H display area, A display area, flight parameter table area, control area, tactical operation area and radar site information; 2) Control functions: Simulates the control of the radar dynamic simulation by real radar display and control, including control of power on / off, signal processing, data processing and anti-interference measures; The analog display module is deployed on a high-performance computer.

4. The fully digital signal-level radar modeling and simulation system according to claim 3, characterized in that: The functions of the instruction control module include: 1) Simulation control: Used to complete the editing of mission scenarios and situation simulation. First, the radar site and clutter environment are deployed. Then, the simulation process is simulated over time, and the geometric relationship between the radar and the target, clutter, interference, and terrain is calculated. 2) Beam scheduling: Based on the situation simulation and the transmission time and status, the corresponding beams are scheduled according to the system beam position arrangement or tracking mode to drive the generation of echo signals; The instruction and control module is deployed on a high-performance computer.

5. The fully digital signal-level radar modeling and simulation system according to claim 4, characterized in that: The echo generation module receives the relative states between the radar and the target, clutter, interference, and terrain transmitted by the beam scheduling in the guidance and control module, and generates echo signals of the radar system in various operating modes. In order to improve the real-time performance of echo signal transmission, the echo signal is output to the signal processing module through shared memory. The echo generation module is deployed on the GPU of a high-performance server.

6. The fully digital signal-level radar modeling and simulation system according to claim 5, characterized in that: The signal processing module receives the echo signal transmitted by the echo generation module through shared memory, and completes signal processing operations including digital beamforming, digital pulse compression, anti-interference, MTI / MTD, sidelobe cancellation / shadow removal, clutter suppression, constant false alarm rate detection, azimuth / elevation angle measurement and spot convergence, generates spot data, and outputs the spot data to the data processing module through the network. The signal processing module is deployed on the CPU of a high-performance server. It is an adaptive engineering executable file for the radar system, generated by code generation and remote compilation during the signal processing design in the radar system modeling module, and is automatically updated as the radar is deployed.

7. The fully digital signal-level radar modeling and simulation system according to claim 6, characterized in that: The data processing module receives the point data transmitted by the signal processing module through the network, completes the track processing operations including track initiation, point-track association and filtering tracking, generates track information, and outputs the track information to the analog display module through the network. The data processing module is deployed on the CPU of a high-performance server, while the filters and trajectory start parameters for trajectory processing are configured by the analog display module.

8. A fully digital signal-level radar modeling and simulation method, applied to the fully digital signal-level radar modeling and simulation system described in claim 1, characterized in that: The static modeling process includes the following steps: S11. The radar system modeling module performs static modeling of the radar system. During this process, the user sets basic parameters and performs tactical indicator analysis in the radar system modeling interface, including radar system selection, radar system parameter settings, radar antenna parameter settings, radar waveform and operating mode settings, system wavelet arrangement, azimuth / elevation coverage map design, and radar accuracy analysis. It then generates a radar system design file, which is saved via data and configuration. Simultaneously, the signal processing design, based on the radar waveform and operating mode, establishes signal processing operations including digital beamforming, digital pulse compression, anti-jamming, MTI / MTD, sidelobe cancellation / shadowing, clutter suppression, constant false alarm rate (CFAR) detection, azimuth / elevation angle measurement, and spot convergence. Through code generation and remote compilation, it generates an adaptive signal processing engineering file for the actual radar system. The user sets track processing elements, including filters and track start parameters, through data processing design. Finally, combining the signal processing design and data processing design, a processing flow design file is generated and saved via data and configuration. S12. Encapsulate the radar system design documents and processing flow design documents to form a typical radar system digital prototype. After the digital prototype is generated, users can still edit it. S13. After completing the static modeling, users can test the radar system's detection performance against various targets in various natural and electromagnetic environments.

9. A fully digital signal-level radar modeling and simulation method, applied to the fully digital signal-level radar modeling and simulation system described in claim 1, characterized in that: The dynamic simulation process includes the following steps: S21. Users can edit radar mission scenarios through the guidance and control module, including editing radar deployment and mission type, determining the radar's working scenario, setting target, clutter and interference parameters according to mission requirements, and completing radar environment modeling. S22. The echo generation module performs real-time calculations on the relative relationships between the radar and the target, clutter, interference, and terrain, and calls up the corresponding radiation patterns, waveforms, and wave position arrangements. It also superimposes broadband / narrowband propagation effects and multipath effects, and generates the radar's working timing sequence and corresponding working waveforms based on the radar system parameters and working mode, generating baseband I / Q signals for the target, clutter, interference, and terrain. S23. The signal processing module performs signal processing operations on the baseband I / Q signal, including digital beamforming, digital pulse compression, anti-interference, MTI / MTD, sidelobe cancellation / shadowing, clutter suppression and constant false alarm rate detection. It also performs range measurement, angle measurement, velocity measurement and spot convergence on the target, generates spot data, and sends the spot data to the data processing module. S24. The data processing module performs track processing operations, including track initiation, point-to-point correlation, and filtering tracking, generates track information, and outputs the track information to the simulation display module via the network. S25, the simulation display module displays the target track point information formed by the radar during the dynamic simulation process.

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