An electronic countermeasure simulation method combining function level and signal level in real time

Abstract

The application provides an electronic countermeasure simulation method of function level and signal level real-time combination, which is used for the simulation verification demand of the influence of new system interference technology on the overall combat effectiveness, sets key nodes and key frames related to the technology in the overall combat scene, only carries out signal level simulation on the key frames of the key nodes, carries out function level simulation on the non-key nodes and the non-key frames of the key nodes. The two simulations are advanced according to the same time step under the same scene control, the results of the key nodes in the key frames are obtained through the signal level simulation model, the results of the non-key nodes and the results of the key nodes in the non-key frames are obtained through the function level simulation model. After the current simulation step is processed, the results of the two are summarized, the command control is carried out according to the preset engagement rule, and the simulation advancement of the next step is entered. The method can meet the simulation verification demand of the influence of new system interference technology on the overall combat effectiveness in the efficiency and fidelity.

Description

Technical Field

[0001] This invention relates to the field of electronic warfare simulation technology, and more specifically, to an electronic warfare simulation method that combines functional and signal levels in real time. Background Technology

[0002] Typical electronic warfare simulation modeling methods include signal-level simulation and functional-level simulation.

[0003] Signal-level simulation uses fully digital methods to simulate the signal transmission, processing, and display of opposing sides in a confrontation. The data exchanged between the opposing sides is mainly digital intermediate frequency (IF) signals, resulting in high fidelity. However, for complex confrontation scenarios with a large number of nodes, signal-level simulation suffers from low efficiency due to the large amount of processing involved in IF signal samples. It cannot quickly verify technical performance, nor can it perform real-time dynamic display and performance evaluation.

[0004] To improve simulation efficiency, functional-level simulation uses parameter information of signals exchanged between adversaries, simulating their processing through parameter calculations. Taking radar countermeasures as an example, the simulation of radar processing includes the power changes of echoes, interference, clutter, and noise after passing through the receiver, pulse compression, and coherent processing stages. The signal-to-noise ratio (SNR) and interference-to-signal ratio (CPI) are used to determine whether the target can be detected. The simulation accuracy of radar processing for interference signals depends on the interference pattern. For example, traditional noise suppression interference can calculate the power change of the interference after radar processing by considering the noise frequency, bandwidth, and antenna pointing. However, with the introduction of new interference patterns, interference patterns with the same CPI exhibit different interference performance at different pulse repetition periods (PRI), different coherent processing intervals (CPI), and different scenario simulation times. It is impossible to simulate the impact of these new interference patterns on radar detection performance through parameter calculations.

[0005] Existing methods utilize signal-level simulation to verify the performance of jamming techniques and functional-level simulation to verify overall combat effectiveness. However, when jamming performance varies with radar waveform parameters, jamming pattern parameters, scene time, spatial configuration, etc., jamming performance cannot be abstractly simulated through parameter calculation. Existing methods cannot verify the impact of new jamming technologies on overall combat effectiveness. Summary of the Invention

[0006] This invention aims to provide a real-time combined functional and signal-level electronic warfare simulation method to solve the problem that traditional simulation methods cannot simultaneously meet the requirements of simulation efficiency and realism in complex combat scenarios.

[0007] This invention provides a real-time joint electronic warfare simulation method at the functional and signal levels, comprising:

[0008] S1, edit the scene, set the trigger conditions for key nodes and key frames, and start the functional simulation;

[0009] S2, when a keyframe is triggered, the signal-level simulation model or the functional-level simulation model is called to perform adversarial interaction according to the node type in the scene, and the synchronous joint simulation of the signal-level and functional-level is started.

[0010] S3, the signal-level simulation model or functional-level simulation model called by each node processes the received digital intermediate frequency signal or signal parameter information, and then reports the processing results to the central control platform.

[0011] S4: After comprehensively analyzing the processing results reported by each simulation model, the results are input into the engagement rules.

[0012] S5, based on the rules of engagement, updates the control information of each simulation model and motion platform, and enters the simulation of the next simulation step;

[0013] S6. After the keyframe ends, the functional simulation model of the key node is corrected using the self-evaluation results of the signal-level simulation model. Then, the simulation is switched to the functional simulation of the large scene until the keyframe is triggered again or the simulation ends.

[0014] Furthermore, in step S1, the scene is edited through the central control platform.

[0015] Furthermore, after editing the scene in step S1, the trigger conditions, engagement rules, model parameters, and simulation step size Δt for key nodes and key frames are set.

[0016] Furthermore, after setting the triggering conditions, engagement rules, model parameters, and simulation step size Δt for key nodes and key frames in step S1, the functional simulation model of all nodes in the scene is called to start the functional simulation.

[0017] Furthermore, step S2 includes:

[0018] If the node type in the scenario is a critical node, then the signal-level simulation model is invoked, and the digital intermediate frequency signals are interacted between nodes in a finer simulation step size Δt / N.

[0019] If the node type in the scenario is a non-critical node, then the functional simulation model is invoked, and the nodes interact with each other according to the simulation step size Δt set in step S1.

[0020] Furthermore, step S3 includes:

[0021] If it is a signal-level simulation model called by a critical node, the two opposing sides will perform N rounds of digital intermediate frequency signal interaction processing. After the N rounds of processing are completed, a simulation end command will be sent to the central control platform, and all processing results within the simulation step size Δt will be reported.

[0022] If it is a functional simulation model called by a non-critical node, after both sides have finished processing the signal parameter information of the interaction within the current simulation step Δt, they send a simulation end command to the central control platform, report the processing results within the simulation step Δt, and then enter a pause state.

[0023] Furthermore, step S4 specifically involves the following steps: After receiving the simulation end command from all simulation models, the central control platform summarizes the processing results reported by the signal-level simulation models called by key nodes and the functional-level simulation models called by non-key nodes, performs comprehensive analysis, and then inputs them into the engagement rules.

[0024] Furthermore, step S5 specifically involves: forming control information for each simulation model and motion platform according to the engagement rules, controlling the working mode, working parameters and platform motion of the simulation model, updating the scene information, simulation model working mode and working parameters for the next moment, entering the simulation of the next simulation step, and repeating steps S2 to S5 until the keyframe ends.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] This invention addresses the problem that traditional simulation methods in complex adversarial scenarios cannot simultaneously meet the requirements of efficiency and realism. By setting key nodes and key frames, it enables simultaneous and joint advancement of signal-level and functional-level simulations. Key frames for key nodes utilize real-time results from signal-level simulation to ensure realism, while non-key nodes utilize real-time results from functional-level simulation to improve simulation efficiency. Since functional-level simulation is far more efficient than signal-level simulation, this joint simulation method is significantly more efficient than pure signal-level simulation, while ensuring consistency in the realism and granularity of key nodes and key frames with signal-level simulation. Taking radar countermeasures as an example, this method can meet the simulation verification requirements for the impact of new jamming technologies on overall combat effectiveness in terms of both efficiency and realism. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a flowchart of an electronic warfare simulation method that combines functional and signal levels in real time, as described in an embodiment of the present invention.

[0029] Figure 2This is a schematic diagram of the joint simulation function modules in the simulation verification of the impact of the new system jamming technology on the overall combat effectiveness in an embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram illustrating the information interaction and time synchronization of the joint simulation of the functional level and the signal level in the simulation verification of the impact of the new system jamming technology on the overall combat effectiveness in this embodiment of the invention. Detailed Implementation

[0031] 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 embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] Example

[0034] The design principle of this invention is as follows: Addressing the simulation verification requirements for the impact of new jamming technologies on overall combat effectiveness, this invention sets up key nodes and key frames related to this technology within the overall combat scenario. Signal-level simulation is performed only on the key frames of key nodes, while functional-level simulation is performed on non-key nodes and non-key frames of key nodes. Both simulations proceed at the same time step under the same scenario control. The results of key nodes at key frames are obtained through signal-level simulation model processing, while the results of non-key nodes and key nodes at non-key frames are calculated through functional-level simulation model calculation. After the current simulation step is completed, the results of both are summarized, and command and control are performed according to preset engagement rules to proceed to the next simulation step. Based on this principle, such as... Figure 1 As shown, this embodiment proposes a real-time joint electronic warfare simulation method at the functional level and signal level, including the following steps:

[0035] S1, edit the scene, set the trigger conditions for key nodes and keyframes, and start the functional simulation; details are as follows:

[0036] Edit scenes through the central control platform;

[0037] After editing the scene, set the trigger conditions, engagement rules, model parameters, and simulation step size Δt for key nodes and key frames;

[0038] After setting the trigger conditions, engagement rules, model parameters, and simulation step size Δt for key nodes and key frames, the functional simulation model of all nodes in the scene is called to start the functional simulation.

[0039] S2, when a keyframe is triggered, the signal-level simulation model or the functional-level simulation model is invoked for adversarial interaction based on the node type in the scene, initiating synchronous joint simulation of the signal-level and functional-level models; specifically including:

[0040] (1) If the node type in the scenario is a critical node, then the signal-level simulation model is called. Due to the large amount of data interaction and processing between signal-level models, the nodes interact with digital intermediate frequency signals in finer simulation step sizes Δt / N.

[0041] (2) If the node type in the scenario is a non-critical node, the functional simulation model is called, and the nodes interact with each other according to the simulation step size Δt set in step S1.

[0042] S3, each node calls a signal-level simulation model or functional-level simulation model to process the received digital intermediate frequency signal or signal parameter information, and then reports the processing results to the central control platform; specifically including:

[0043] (1) If it is a signal-level simulation model called by a key node, the two sides will perform N rounds of digital intermediate frequency signal interaction processing. After the N rounds of processing are completed, a simulation end command will be sent to the central control platform, and all processing results within the simulation step size Δt will be reported.

[0044] (2) If it is a functional simulation model called by a non-critical node, after both sides have finished processing the signal parameter information of the interaction within the current simulation step Δt, they send a simulation end command to the central control platform and report the processing results within the simulation step Δt, and then enter the pause state.

[0045] S4. After comprehensively analyzing the processing results reported by each simulation model, the results are input into the engagement rules. Specifically, after the central control platform receives the simulation end command from all simulation models, it summarizes the processing results reported by the signal-level simulation models called by key nodes and the functional-level simulation models called by non-key nodes, performs comprehensive analysis, and then inputs them into the engagement rules.

[0046] S5: Update the control information for each simulation model and the overall control platform based on the engagement rules, and enter the simulation of the next simulation step; Specifically: form control information for each simulation model and motion platform according to the engagement rules, control the working mode, working parameters and platform motion of the simulation model, update the scene information, simulation model working mode and working parameters of the next moment, enter the simulation of the next simulation step, and repeat steps S2 to S5 until the keyframe ends.

[0047] S6. After the keyframe ends, the functional simulation model of the key node is corrected using the self-evaluation results of the signal-level simulation model. Then, the simulation is switched to the functional simulation of the large scene until the keyframe is triggered again or the simulation ends.

[0048] Taking the simulation verification of the impact of new system jamming technology on overall combat effectiveness as an example, according to Figure 1 The implementation process is shown below. The steps for this example are as follows:

[0049] Step 1: The overall designers complete the scenario editing through the central control platform, editing the scenario elements during the confrontation process, including radar, electronic reconnaissance, electronic jamming, communication, firepower weapons, UAV platforms, fighter jet platforms, etc. of both sides. The red team's electronic jammer and the blue team's airborne early warning radar are set as key nodes, and the time period between the red team's jammer and the blue team's airborne early warning radar (500km to 300km) is set as a keyframe. Engagement rules are imported, the simulation step size is set to 1 second, and the functional-level simulation models of each node are called to start the functional-level simulation. The entire joint simulation functional module is as follows: Figure 2 As shown.

[0050] Step 2: When the red team's jammer is 500km away from the blue team's airborne early warning radar, a key frame is triggered, and the signal level and functional level synchronous joint simulation is started.

[0051] If it is a red team jammer and a blue team airborne early warning radar, the corresponding signal-level simulation model is called, the simulation step size is refined to 20ms, the signal-level radar model sends a 20ms transmitted waveform sample to the signal-level jamming model, the signal-level jamming model processes it and sends a 20ms jamming signal sample to the signal-level radar model, the signal-level radar model superimposes the jamming signal, echo signal and noise signal together for signal processing and data processing;

[0052] If it is another node, the functional simulation model is called, the signal parameter information within a 1-second step is exchanged between the models, and the processing results of each model are simulated through parameter calculation.

[0053] Step 3: Different simulation models perform internal processing simulations and report the processing results.

[0054] If the signal level simulation models are the red team's jammer and the blue team's airborne early warning radar, each model will perform 50 signal interaction processes. The jammer model and the airborne early warning radar model will report the reconnaissance and identification results and point track information obtained from the 50 interaction processes to the central control platform and send a simulation end command.

[0055] For other functional simulation models, after processing the signal parameter information within 1 second, the processing results and simulation end command are reported to the central control platform, and then the model enters a pause state.

[0056] Step 4: After summarizing and analyzing the reported results from each simulation model, input them into the engagement rules. After receiving the simulation end command from all simulation models, the central control platform summarizes the processing results reported by the simulation models called by each node, performs comprehensive analysis, and inputs them into the engagement rules.

[0057] Step 5: Update the control information for each simulation model and the overall control platform based on the rules of engagement, and proceed to the next simulation step. Based on the rules of engagement, generate control information for each simulation model and the overall control platform, controlling the operating mode, operating parameters, and platform movement of each simulation model. Update the scene information, simulation model operating mode, and operating parameters one second later, and proceed to the next simulation step. Repeat steps 2 through 5 until the red force jammer is 300km away from the blue force's airborne early warning radar.

[0058] Step 6: After the keyframe ends, use the self-evaluation results of the signal-level simulation models of the jammer and airborne early warning radar to correct the functional-level simulation models of the jammer and airborne early warning radar, and switch to large-scale scene functional-level simulation until the keyframe is triggered again or the simulation ends.

[0059] The information interaction and time synchronization diagram of the joint simulation of the functional level and the signal level in the above process is shown in the figure below. Figure 3 As shown.

[0060] As can be seen from the above embodiments, this invention addresses the problem that traditional simulation methods in complex adversarial scenarios cannot simultaneously meet the requirements of efficiency and realism. By setting key nodes and key frames, it enables signal-level simulation and functional-level simulation to proceed synchronously and jointly. Key frames of key nodes utilize real-time results from signal-level simulation to ensure realism, while non-key nodes utilize real-time results from functional-level simulation to improve simulation efficiency. Since functional-level simulation is far more efficient than signal-level simulation, this joint simulation method is significantly more efficient than pure signal-level simulation, while ensuring that the simulation realism and granularity of key nodes and key frames are consistent with signal-level simulation. Taking radar countermeasures as an example, this joint simulation method can meet the simulation verification requirements for the impact of new jamming technologies on overall combat effectiveness in terms of both efficiency and realism.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A real-time joint electronic warfare simulation method at the functional and signal levels, characterized in that, include: S1, edit the scene, set the trigger conditions for key nodes and key frames, and start the functional simulation; S2, when a keyframe is triggered, the signal-level simulation model or the functional-level simulation model is called to perform adversarial interaction according to the node type in the scene, and the synchronous joint simulation of the signal-level and functional-level is started. S3, the signal-level simulation model or functional-level simulation model called by each node processes the received digital intermediate frequency signal or signal parameter information, and then reports the processing results to the central control platform. S4: After comprehensively analyzing the processing results reported by each simulation model, the results are input into the engagement rules. S5, based on the rules of engagement, updates the control information of each simulation model and motion platform, and enters the simulation of the next simulation step; S6. After the keyframe ends, the functional simulation model of the key node is corrected using the self-evaluation results of the signal-level simulation model. Then, the functional simulation of the large scene is switched to continue until the keyframe is triggered again or the simulation ends. Step S2 includes: If the node type in the scenario is a critical node, then the signal-level simulation model is invoked, and the nodes are simulated in finer steps Δ. t / N Interactive digital intermediate frequency signal; If the node type in the scenario is a non-critical node, then the functional simulation model is invoked, and the simulation step size Δ between nodes is set in step S1. t Interact with the signal parameter information within the simulation step size.

2. The electronic warfare simulation method for real-time joint functional and signal levels according to claim 1, characterized in that, In step S1, the scene is edited through the central control platform.

3. The electronic warfare simulation method for real-time joint functional and signal levels according to claim 1, characterized in that, After editing the scene in step S1, set the trigger conditions for key nodes and keyframes, engagement rules, model parameters, and simulation step size Δ. t .

4. The electronic countermeasures simulation method for real-time joint functional and signal levels according to claim 3, characterized in that, In step S1, the trigger conditions, engagement rules, model parameters, and simulation step size Δ for key nodes and keyframes are set. t Then, the functional simulation model of all nodes in the scene is invoked to start the functional simulation.

5. The electronic countermeasures simulation method for real-time joint functional and signal levels according to claim 4, characterized in that, Step S3 includes: If the signal-level simulation model is invoked at a critical node, the opposing sides will conduct... N Digital intermediate frequency signal interactive processing of the wheel, pending N After the round processing is completed, a simulation end command is sent to the central control platform, and the simulation step size Δ is reported. t All processing results within; If the simulation model is invoked by a non-critical node, the opposing sides will have different values ​​for the current simulation step size Δ. t After processing the information parameters from the internal interaction, a simulation end command is sent to the central control platform, and the simulation step size Δ is reported. t The processing results are processed, and then the process enters a paused state.

6. The electronic warfare simulation method for real-time joint functional and signal levels according to claim 5, characterized in that, Step S4 is as follows: After receiving the simulation end command from all simulation models, the central control platform summarizes the processing results reported by the signal-level simulation models called by key nodes and the functional-level simulation models called by non-key nodes, performs comprehensive analysis, and inputs them into the engagement rules.

7. The electronic countermeasures simulation method for real-time joint functional level and signal level according to claim 6, characterized in that, Step S5 specifically involves: forming control information for each simulation model and motion platform according to the engagement rules, controlling the working mode, working parameters and platform motion of the simulation model, updating the scene information, simulation model working mode and working parameters for the next moment, entering the simulation of the next simulation step, and repeating steps S2 to S5 until the keyframe ends.

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