A distributed simulation test system and method for fuze information interference

Abstract

The invention discloses a fuze information-based jammer distributed simulation test system and method, which relate to the field of simulation technology and include a simulation engine-simulation dynamic control module, a simulation planning module, a situation display module, an equipment digital model, an interference performance evaluation module and a distributed data interaction interface. The simulation engine-simulation dynamic control module is connected to the equipment digital model through a distributed data interaction interface, thereby improving the scalability of the overall simulation architecture. The situation display module displays node information and simulation results in real time, thereby making the interaction process between the models and the anti-interference process of the fuze clearer and more intuitive. The equipment digital model simulates the fuze model and the information-based jammer model required for the distributed simulation, thereby improving the simulation effect of the workflow of the fuze and the jammer, and providing instant and highly accurate interference effectiveness judgment for the fuze interference countermeasure simulation.

Description

Technical Field

[0001] The present invention relates to the field of simulation technology, and in particular to a fuze information type interference distributed simulation test system and method. Background Art

[0002] The emergence of radio fuze has significantly improved the damage efficiency of weapons and ammunition. Its status as the core of ammunition detonation control has attracted great attention from all countries in the world. As part of the game between the warring parties, along with the development of radio fuze, the interference technology for radio fuze has also developed synchronously. For the interference technology of fuze, according to the energy source of electronic interference, it can be divided into passive interference technology and active interference technology. According to the different effects on the fuze, active interference can be divided into energy interference and information interference. According to the principle of fuze, information interference allows the interference signal to enter the fuze signal processing circuit, inducing the fuze to misjudge the signal, resulting in premature explosion and misfire of the fuze. Compared with energy interference, the research on information interference started earlier and the interference methods are diverse.

[0003] At present, the evaluation of the anti-interference performance of fuzes is the research focus for the research on information-based jamming of fuzes. The evaluation of the anti-interference performance of fuzes cannot be limited to the fuze itself, but also needs to rely on the combat background. By building a realistic simulation scene, a comprehensive evaluation of the overall combat strike and key defense plan is carried out in a complex and changing environment. However, the evaluation of the combat plan is limited by the conditions of the target range and has serious problems such as low cost-effectiveness. Therefore, a high-fidelity distributed simulation platform for fuze jamming combat plans is built, computer abstract modeling is performed for information-based jammers, the macro-level red and blue army fuze-jammer confrontation process is simulated, and the combat results are displayed in a centralized manner. This has important practical significance for the evaluation and guidance of our army's combat plans.

[0004] Therefore, a fuze information type interference distributed simulation test system and method are provided to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a fuze information interference distributed simulation test system and method, which is aimed at the needs of fuze anti-interference performance and combat plan verification, takes the mainstream continuous wave Doppler fuze and continuous wave frequency modulation fuze in active ammunition and weapon equipment as the object, and uses forwarding interference and sweeping frequency interference as the interference mode of the jammer. Based on the VR-Forces simulation engine, a distributed simulation model of the above-mentioned fuze and jammer is developed to reduce the investment cost and provide favorable tool support for the simulation and evaluation of the overall combat plan.

[0006] To achieve the above object, the present invention provides a fuze information type interference distributed simulation test method, comprising the following steps:

[0007] S1: The simulation planning module performs scenario configuration, plans simulation scenarios, generates simulation scenario script files, and sends the simulation script files to the simulation engine-simulation dynamic control module. The simulation engine-simulation dynamic control module receives the simulation scenario script files, parses the script files, and runs the simulation scenarios.

[0008] S2: The simulation engine-simulation dynamic control module sends the parameter data of the simulation node to the equipment digital model in real time. The equipment digital model simulates the repeater jamming mechanism of the continuous wave Doppler fuze, the sweep frequency jamming mechanism of the continuous wave Doppler fuze, the repeater jamming mechanism of the continuous wave frequency modulation fuze, and the sweep frequency jamming mechanism of the continuous wave frequency modulation fuze, and stores the simulation results in the database;

[0009] S3: The simulation engine-simulation dynamic control module sends the parameter data of the simulation node to the situation display module in real time. The situation display module receives and displays the real-time parameter information of the simulation node. The simulation engine-simulation dynamic control module obtains the working status information of the equipment digital model in real time according to the simulation process requirements. The simulation process requirements are to calculate the signal power. The simulation engine-simulation dynamic control module obtains the antenna pattern of the missile-target intersection of the equipment digital model, the interference signal of the jammer, and the firing instruction of the fuze in real time according to the fuze node parameters and the jammer node parameters;

[0010] S4: After the simulation scenario is finished, the interference performance evaluation module obtains the simulation data of the simulation engine-simulation dynamic control module and performs statistics on the simulation data;

[0011] S5: The interference performance evaluation module calculates the power of the interference signal. If the parameters of the interference signal meet the standards, the interference performance evaluation module calls the database for query based on the parameters of the interference signal, and judges the interference result based on the query result. If the interference result meets the standards, it is judged that the fuze explodes prematurely due to the influence of the jammer. If the parameters of the interference signal do not meet the standards or the interference result does not meet the standards, it is judged that the fuze works normally, and the situation display module displays the effects of the fuze and jammer signals.

[0012] Preferably, in step S1, the simulation planning module performs fuse parameter configuration and jammer parameter configuration, specifically including functional business configuration, attribute parameter configuration and mobile model configuration. The simulation planning module distinguishes fuse nodes and jammer nodes in the simulation scenario through functional business configuration. The simulation planning module adjusts the external attributes of the fuse nodes and jammer nodes through attribute parameter configuration, sets the fuse nodes as continuous wave Doppler fuses and continuous wave frequency modulation fuses, and sets the jammer nodes as forwarding jammers and sweeping frequency jammers.

[0013] Preferably, the simulation planning module sets the moving paths of the fuze node and the jammer node through the mobile model configuration, the moving path of the fuze node is set to the trajectory of the ammunition carrying the fuze, and the position coordinates of the jammer node are fixed.

[0014] Preferably, in step S2, the digital model of the equipment is used for mechanism simulation, which specifically includes the following steps:

[0015] S21: The fuze node moves along the trajectory of the ammunition carrying the fuze, and determines the position and provides a firing signal by performing mixing and detection processing on the echo signal;

[0016] S22: The jammer node conducts reconnaissance and interference on the fuze node, and the corresponding airspace fuzes of the jammer node and the fuze node explode prematurely or fail.

[0017] Preferably, in step S22, the jammer node conducts reconnaissance and interference on the fuze node, specifically including the following steps:

[0018] Step 1: The simulation planning module configures the jammer parameters, the jammer fuze transmits signals in the reconnaissance environment, and the simulation engine-simulation dynamic control module calculates the electromagnetic wave transmission of the jammer's reconnaissance results. If the calculation result is greater than the receiving sensitivity, the reconnaissance result is output and the next reconnaissance cycle is entered. If the calculation result is not greater than the receiving sensitivity, the next reconnaissance cycle is entered directly.

[0019] Step 2: Traverse the simulation scene, find the jammer node and obtain the jammer node parameters, determine the working status of the corresponding jammer according to the jammer node parameters, if the jammer is in working state, check the working frequency of the jammer, if the working frequency meets the requirements, calculate the direct power and comprehensive power of the jammer according to the electromagnetic wave transmission model;

[0020] In the process of calculating direct power, atmospheric attenuation is not considered. The direct power is expressed as:

[0021] ;

[0022] in is the jammer radiated power, is the jammer transmitting antenna gain, is the jammer antenna directivity function, is the fuze receiving antenna gain, is the directivity function of the fuze antenna. is the fuze operating wavelength, To detect the amplitude polarization matching coefficient between the jammer antenna and the fuze echo, is the distance between the fuze and the reconnaissance equipment;

[0023] The comprehensive power is set to the comprehensive power of the direct and reflected jammer. The comprehensive power is expressed as:

[0024] ;

[0025] in is the comprehensive coefficient, the comprehensive coefficient The value of is determined by approximate estimation, and the comprehensive coefficient The maximum value of is expressed as:

[0026] ;

[0027] Comprehensive coefficient The minimum value of is:

[0028] ;

[0029] in is the ratio factor between reflection and direct radiation, is the modulus of the reflection coefficient;

[0030] In the target early explosion airspace, the echo signal power of the fuze transmission signal is greater than the receiving threshold of the fuze. If the power of the interference signal is greater than the power of the corresponding fuze echo signal, the fuze receives the interference signal. Set the fuze explosion height to The echo signal power is , considering the suppression coefficient to be ,like Greater than , the interference signal meets the interference requirements at the energy level. After the fuze receives the signal that meets the energy conditions, it calls the database to make a judgment based on the jammer type and fuze type.

[0031] Preferably, a system for a distributed simulation test method for fuze information-type interference includes a simulation engine-simulation dynamic control module, a simulation planning module, a situation display module, an equipment digital model, an interference performance evaluation module and a distributed data interaction interface, and the simulation engine-simulation dynamic control module is connected to the equipment digital model through a distributed data interaction interface.

[0032] Preferably, the simulation engine-simulation dynamic control module includes a component system management tool, a sensor component, a controller component, an actuator component, a capability simulation component, a coordinate conversion component, an electromagnetic transmission calculation component, a simulation event scheduling component and a time management tool; the simulation planning module includes a simulation scenario planning submodule, a fuze parameter configuration submodule and a jammer parameter configuration submodule; the situation display module includes a fuze parameter display submodule, a jammer parameter display submodule and a simulation result display submodule; the equipment digital model includes a fuze model, a jammer model and a projectile-target intersection model; if the ammunition has differences in fall angle, rotation speed, projectile speed, distance and antenna, the projectile-target intersection model provides a signal power calculation method between the fuze and the target, and between the fuze and the jammer; the interference performance evaluation module includes a simulation data statistics submodule and a simulation data acquisition submodule; and the distributed data interaction interface adopts the distributed simulation message bus DIS protocol.

[0033] Preferably, the fuze model includes a continuous wave Doppler fuze model and a continuous wave frequency modulation fuze model, and the modeling parameters of the continuous wave Doppler fuze model include the fuze transmission signal frequency , fuze transmission power , Fuze transmitting antenna gain , fuze transmitting antenna directivity function , Fuze receiving antenna gain , fuze receiving antenna directivity function , working bandwidth , receiving sensitivity, Doppler frequency range, amplitude rate threshold and Doppler signal amplitude threshold. The modeling parameters of the continuous wave frequency modulation fuze model include the initial frequency bandwidth , modulation period , modulation frequency deviation , fuze transmission power , fuze transmitting antenna gain , fuze transmitting antenna directivity function , fuze receiving antenna gain , fuze receiving antenna directivity function , working bandwidth and receiving sensitivity.

[0034] Preferably, the jammer model includes a repeater jammer model and a sweeping frequency jammer model. The repeater jammer model delays and amplifies the received fuze transmission signal to obtain a target fuze, sends the target fuze to the target position, and realizes early explosion operation by generating misjudgment. The modeling parameters of the repeater jammer model include operating frequency band, receiving antenna gain, receiving antenna directivity function, receiver sensitivity, transmitting antenna gain, transmitting antenna directivity function and transmitting power.

[0035] Preferably, the swept-frequency jammer model sets the starting frequency and starting bandwidth of the jammer's transmitted signal, and the jammer's transmitted signal is swept according to a specific period and frequency. If the center frequency of the interference signal enters the receiving bandwidth of the fuze, the fuze is interfered by the interference signal. The modeling parameters of the swept-frequency jammer model include the operating frequency band, the receiving antenna gain, the receiving antenna directivity function, the receiver sensitivity, the transmitting antenna gain, the transmitting antenna directivity function, the transmitting power sweep range, the number of frequency points and the dwell time.

[0036] Therefore, the present invention adopts a method of the above structure, which has the following beneficial effects:

[0037] (1) The overall distributed simulation architecture of fuze information jammer is proposed, which separates engine calculation and model resource and performance evaluation modules and has good scalability.

[0038] (2) Design and implement the fuze model and information jammer model required for distributed simulation to improve the simulation effect of the fuze and jammer workflow;

[0039] (3) Design a simulation method for fuze information jamming and build a simulation database to store simulation results, so as to provide instant and highly accurate jamming effectiveness judgment for fuze jamming countermeasure simulation;

[0040] (4) Develop an interactive interface for fuze information jamming simulation. Display the fuze node parameters, jammer node parameters, and simulation results through the situation display module, making the interaction process between the models and the fuze anti-jamming process clearer and more intuitive.

[0041] The method scheme of the present invention is further described in detail below through the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a flow chart of a fuze information type interference distributed simulation test method of the present invention;

[0043] Figure 2 It is a flow chart of the jammer reconnaissance phase of the present invention;

[0044] Figure 3 It is a flow chart of the jammer jamming stage of the present invention;

[0045] Figure 4 A flow chart of the interference performance evaluation module of the present invention evaluating the interference result;

[0046] Figure 5 A structural diagram of a system for a fuze information type interference distributed simulation test method of the present invention;

[0047] Figure 6It is the continuous wave Doppler fuse forwarding type interference detection signal and starting signal of the present invention;

[0048] Figure 7 It is the continuous wave Doppler fuze sweep frequency interference detection signal and start signal of the present invention;

[0049] Figure 8 It is the continuous wave frequency modulation fuse forwarding type interference detection signal and starting signal of the present invention;

[0050] Fig. 9 It is the sweeping interference detection signal and the starting signal of the continuous wave frequency modulation fuse of the present invention;

[0051] Fig.10 Schematic diagram of the simulation scene of the present invention. DETAILED DESCRIPTION

[0052] The method scheme of the present invention is further described below through drawings and embodiments.

[0053] Unless otherwise defined, method terms or scientific terms used in the present invention shall have the common meanings understood by one of ordinary skill in the art to which the present invention belongs.

[0054] The words "include" or "comprises" and the like used in the present invention mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also including other elements. The orientation or position relationship indicated by the terms "inside", "outside", "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention. When the absolute position of the described object changes, the relative position relationship may also change accordingly. In the present invention, unless otherwise clearly specified and limited, the terms "attachment" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] like Figure 1 As shown, the present invention provides a fuze information type interference distributed simulation test method, comprising the following steps:

[0056] S1: The simulation planning module performs scenario configuration, plans simulation scenarios, generates simulation scenario script files, and sends the simulation script files to the simulation engine-simulation dynamic control module. The simulation engine-simulation dynamic control module receives the simulation scenario script files, parses the script files, and runs the simulation scenarios.

[0057] In step S1, the simulation planning module performs fuze parameter configuration and jammer parameter configuration, specifically including functional business configuration, attribute parameter configuration and mobile model configuration. The simulation planning module distinguishes the fuze nodes and jammer nodes in the simulation scene through the functional business configuration. The simulation planning module adjusts the external attributes of the fuze nodes and the jammer nodes through the attribute parameter configuration, sets the fuze nodes to continuous wave Doppler fuzes and continuous wave frequency modulation fuzes, and sets the jammer nodes to forwarding jammers and sweeping frequency jammers;

[0058] The simulation planning module sets the moving paths of the fuze node and the jammer node through the mobile model configuration. The moving path of the fuze node is set to the trajectory of the ammunition carrying the fuze, and the position coordinates of the jammer node are fixed.

[0059] The simulation planning module calculates and modifies the real-time parameters of the fuze. During the simulation process, the real-time status of the fuze node and the jammer node can be viewed;

[0060] S2: The simulation engine-simulation dynamic control module sends the parameter data of the simulation node to the equipment digital model in real time. The equipment digital model simulates the repeater jamming mechanism of the continuous wave Doppler fuze, the sweep frequency jamming mechanism of the continuous wave Doppler fuze, the repeater jamming mechanism of the continuous wave frequency modulation fuze, and the sweep frequency jamming mechanism of the continuous wave frequency modulation fuze, and stores the simulation results in the database;

[0061] In step S2, the digital model of the equipment is used for mechanism simulation, and the specific parameters are set as follows:

[0062] Based on matlab, the repeater jamming mechanism of continuous wave Doppler fuze is simulated. The transmission signal power of continuous wave Doppler fuze is set to 25dBm, the frequency is set to 750MHz, the predetermined explosion height is set to 10m, and a certain power drift and frequency drift are added to the waveform. The delay time of repeater jammer interference is set to 100ns, and an amplitude modulation is added to the signal. The interference signal is transmitted with a power of 45dBm. The parameters of Doppler digital filter are set. Butterworth filter is used. The filter order is set to 2nd order, the center frequency is set to 1300Hz, the bandwidth is set to 200Hz, and the amplifier gain is set to 8dB. The Doppler signal is obtained after filtering the zero intermediate frequency signal. The Doppler signal is envelope detected. The start condition is judged according to the amplitude of the detection signal, and the start signal is given. Figure 6 As shown, at a height of about 85m from the ground, the fuze was affected by the jammer and exploded prematurely;

[0063] Based on MATLAB, the sweep frequency jamming mechanism of the continuous wave Doppler fuze is simulated. The parameters of the fuze transmission signal are kept unchanged. The jamming power of the sweep frequency jammer is set to 40dBm, the center carrier frequency is set to 750MHz, the sweep bandwidth is set to 10MHz, the number of sweep points is set to 500 points, and the dwell time of each point is set to 0.5ms. Doppler frequency modulation is added to the jamming signal, and the modulation period is set to 1300Hz. Sine wave amplitude modulation is used. After the fuze receives the jamming signal, the fuze mixes with the jamming signal and the target echo signal to obtain a zero intermediate frequency signal. The Doppler digital filter setting is kept unchanged to obtain the detection signal, such as Figure 7 As shown, at a height of about 65m from the ground, the fuze was affected by the jammer and exploded prematurely;

[0064] Based on Matlab, the repeater jamming mechanism of the continuous wave frequency modulation fuze is simulated. The transmission signal power of the continuous wave frequency modulation fuze is set to 10dBm, the carrier frequency is set to 2.9GHz, the predetermined explosion height is set to 10m, the triangle wave frequency modulation is adopted, the modulation frequency is set to 150kHz, the modulation bandwidth is set to 30MHz, the delay time of the repeater jammer interference is set to 500ns, and the amplitude modulation is added to the signal. The jammer transmission signal power is set to 15dBm to generate the interference signal. After the fuze receives the interference signal, the fuze and the interference signal are combined. The target echo signal is mixed once to obtain a zero intermediate frequency signal. The bandpass digital filter parameters are set. A Butterworth filter is used. The number of filter channels is set to single channel, the order is set to 2nd order, the center frequency is set to 600kHz, the bandwidth is set to 30kHz, and the amplifier gain is set to 20dB. The zero intermediate frequency signal is bandpass filtered to obtain a 4th harmonic signal. The 4th harmonic signal is mixed twice with the 4th frequency signal of the modulation signal to obtain a Doppler signal. The Doppler signal is envelope detected. The start condition is determined according to the amplitude of the detection signal, and a start signal is given, such as Figure 8 As shown, at a height of about 27m from the ground, the fuze was affected by the jammer and exploded prematurely;

[0065] The swept frequency jamming mechanism of the continuous wave frequency modulation fuze is simulated based on matlab. Keep the parameters of the fuze transmission signal unchanged, set the interference power of the swept frequency jammer to 15dBm, the center carrier frequency to 2.9GHz, the swept frequency bandwidth to 30MHz, the number of swept frequency points to 100 points, and the dwell time of each point to 1ms. At the same time, add Doppler frequency modulation to the interference signal, set the modulation period to 1500Hz, and use sinusoidal wave amplitude modulation to generate a swept frequency interference signal. After the fuze receives the interference signal, the fuze mixes the interference signal and the target echo signal once to obtain a zero intermediate frequency signal. Keep the digital filter settings unchanged, and obtain the detection signal after secondary mixing, such as Fig. 9As shown in the figure, at a distance of about 20m from the ground, the fuze was affected by the jammer and exploded prematurely.

[0066] In step S2, the digital model of the equipment is used for mechanism simulation, which specifically includes the following steps:

[0067] S21: The fuze node moves along the trajectory of the ammunition carrying the fuze, and determines the position and provides a firing signal by performing mixing and detection processing on the echo signal;

[0068] S22: The jammer node conducts reconnaissance and interference on the fuze node, and the corresponding airspace fuzes of the jammer node and the fuze node explode prematurely or fail;

[0069] In step S22, the jammer node conducts reconnaissance and jamming on the fuze node, which specifically includes the following steps:

[0070] Step 1: Figure 2 As shown, the simulation planning module configures the jammer parameters, the jammer fuze transmits signals in the reconnaissance environment, and the simulation engine-simulation dynamic control module performs electromagnetic wave transmission calculation on the reconnaissance result of the jammer. If the calculation result is greater than the receiving sensitivity, the reconnaissance result is output and the next reconnaissance cycle is entered. If the calculation result is not greater than the receiving sensitivity, the next reconnaissance cycle is directly entered.

[0071] Step 2: If Figure 3 As shown, traverse the simulation scene, find the jammer node and obtain the jammer node parameters, judge the working state of the corresponding jammer according to the jammer node parameters, if the jammer is in working state, check the working frequency of the jammer, if the working frequency meets the requirements, calculate the direct power and comprehensive power of the jammer according to the transmission model of electromagnetic waves;

[0072] In the process of calculating direct power, atmospheric attenuation is not considered. The direct power is expressed as:

[0073] ;

[0074] in is the jammer radiated power, is the jammer transmitting antenna gain, is the jammer antenna directivity function, is the fuze receiving antenna gain, is the directivity function of the fuze antenna. is the fuze operating wavelength, To detect the amplitude polarization matching coefficient between the jammer antenna and the fuze echo, is the distance between the fuze and the reconnaissance equipment;

[0075] The power of the jamming signal received by the fuze far exceeds the ground echo power of its own signal, so the comprehensive power is set to the comprehensive power of the direct and reflected jammer. The comprehensive power is expressed as:

[0076] ;

[0077] in is the comprehensive coefficient, the comprehensive coefficient The value of is determined by approximate estimation, and the comprehensive coefficient The maximum value of is expressed as:

[0078] ;

[0079] Comprehensive coefficient The minimum value of is:

[0080]

[0081] in is the ratio factor between reflection and direct radiation, is the modulus of the reflection coefficient;

[0082] In the target early explosion airspace, the echo signal power of the fuze transmission signal is greater than the receiving threshold of the fuze. If the power of the interference signal is greater than the power of the corresponding fuze echo signal, the fuze receives the interference signal. Set the fuze explosion height to The echo signal power is , considering the suppression coefficient to be ,like Greater than ,The jamming signal meets the jamming requirements at the energy level. After the fuze receives the signal that meets the energy conditions, it calls the database to make a judgment based on the jammer type and fuze type;

[0083] S3: The simulation engine-simulation dynamic control module sends the parameter data of the simulation node to the situation display module in real time. The situation display module receives and displays the real-time parameter information of the simulation node. The simulation engine-simulation dynamic control module obtains the working status information of the equipment digital model in real time according to the simulation process requirements. The simulation process requirements are to calculate the signal power. The simulation engine-simulation dynamic control module obtains the antenna pattern of the missile-target intersection of the equipment digital model, the interference signal of the jammer, and the firing instruction of the fuze in real time according to the fuze node parameters and the jammer node parameters;

[0084] S4: After the simulation scenario is finished, the interference performance evaluation module obtains the simulation data of the simulation engine-simulation dynamic control module and performs statistics on the simulation data;

[0085] S5: Figure 4As shown, the interference performance evaluation module calculates the power of the interference signal. If the parameters of the interference signal meet the standards, the interference performance evaluation module calls the database for query according to the parameters of the interference signal, and determines the interference result according to the query result. If the interference result meets the standards, it is determined that the interference result is that the fuze is affected by the jammer and explodes prematurely. If the parameters of the interference signal do not meet the standards or the interference result does not meet the standards, it is determined that the interference result is that the fuze works normally, and the situation display module displays the effects of the fuze and jammer signals.

[0086] like Figure 5 As shown, a system for a distributed simulation test method for fuze information interference is developed based on Qt and VR-Forces. The system includes a simulation engine-simulation dynamic control module, a simulation planning module, a situation display module, an equipment digital model, an interference performance evaluation module and a distributed data interaction interface. The simulation engine-simulation dynamic control module is connected to the equipment digital model through a distributed data interaction interface, and the distributed data interaction interface adopts a distributed simulation message bus DIS protocol;

[0087] The simulation engine-simulation dynamic control module is developed based on VR-Forces, providing the system with simulation dynamic control functions. It is the core component of the system. The simulation engine-simulation dynamic control module includes component system management tools, sensor components, controller components, actuator components, capability simulation components, coordinate conversion components, electromagnetic transmission calculation components, simulation event scheduling components and time management tools.

[0088] The simulation planning module includes a simulation scenario planning submodule, a fuze parameter configuration submodule and a jammer parameter configuration submodule;

[0089] The interference performance evaluation module determines from the signal level whether the fuze can generate a detonation signal when it is interfered. The interference performance evaluation module uses a database query method to quickly determine the interference result. The interference performance evaluation module includes a simulation data statistics submodule and a simulation data acquisition submodule;

[0090] The situation display module includes the fuze parameter display submodule, the jammer parameter display submodule and the simulation result display submodule;

[0091] The equipment digital model provides guidance for the behavior of the fuze node and the jammer node. The equipment digital model includes the fuze model, the jammer model and the missile-target intersection model. If the ammunition has differences in the falling angle, rotation speed, bullet speed, distance and antenna, the missile-target intersection model provides a method for calculating the signal power between the fuze and the target, and between the fuze and the jammer.

[0092] The fuze model includes the continuous wave Doppler fuze model and the continuous wave frequency modulation fuze model. The modeling parameters of the continuous wave Doppler fuze model include the fuze emission signal frequency , fuze transmission power , Fuze transmitting antenna gain , fuze transmitting antenna directivity function , Fuze receiving antenna gain , fuze receiving antenna directivity function , working bandwidth , receiving sensitivity, Doppler frequency range, amplitude rate threshold and Doppler signal amplitude threshold. The modeling parameters of the continuous wave frequency modulation fuze model include the initial frequency bandwidth , modulation period , modulation frequency deviation , fuze transmission power , fuze transmitting antenna gain , fuze transmitting antenna directivity function , fuze receiving antenna gain , fuze receiving antenna directivity function , working bandwidth and receiving sensitivity;

[0093] The jammer model includes a repeater jammer model and a sweeping frequency jammer model. The repeater jammer model delays and amplifies the received fuze transmission signal to obtain the target fuze, sends the target fuze to the target position, and realizes the early bombing operation by generating misjudgment. The modeling parameters of the repeater jammer model include the working frequency band, receiving antenna gain, receiving antenna directivity function, receiver sensitivity, transmitting antenna gain, transmitting antenna directivity function and transmitting power.

[0094] The swept-frequency jammer model sets the starting frequency and starting bandwidth of the jammer's transmitted signal. The jammer's transmitted signal sweeps according to a specific period and frequency. If the center frequency of the jammer signal enters the receiving bandwidth of the fuze, the fuze is interfered by the jammer signal. The modeling parameters of the swept-frequency jammer model include the operating frequency band, receiving antenna gain, receiving antenna directivity function, receiver sensitivity, transmitting antenna gain, transmitting antenna directivity function, transmitting power sweep range, number of frequency points and dwell time.

[0095] Example

[0096] The simulation is carried out by taking the interference of the sweep frequency jammer on the continuous wave Doppler fuze as an example. The specific simulation process is as follows:

[0097] like Fig.10As shown in the figure, the simulation scenario of the Red Army fuze-jammer confrontation is planned. In the figure, the artillery is the Red Army node, which needs to strike the Blue Army target. The dotted straight line is the ballistic line. The ballistic line is ideally solved through the launch point and the drop point dispersion range. The target is located on the south side of the artillery, and the Blue Army jammer node is placed on the east side of the target. The jammer is outside the ammunition dispersion range. The dotted fan-shaped area is the jammer main axis interference range. Adjust the jammer angle so that the jammer interference range covers the ballistic line. Configure the artillery ammunition carrying fuze as a continuous wave Doppler system fuze, and set the fuze working frequency band to 75 0MHz, configure the parameters of the jammer node, set the azimuth angle to 300°, the elevation angle to 20°, so that the interference range covers the ballistic line, set the jammer model to swept frequency interference, configure the swept frequency interference parameters, set the swept frequency interference power to 100W (i.e. 50dBm), the sweep start frequency to 740MHz, the sweep bandwidth to 20MHz, the sweep interval to 100kHz (i.e. 200 sweep points), the dwell time to 0.5ms, the modulation mode to amplitude modulation, and the modulation waveform to sine wave;

[0098] After the simulation starts, the artillery's attack mode is set to round firing, the loading time is set to 10 seconds, and 9 ammunition are fired at the target node. The simulation engine-simulation dynamic control module sends the real-time situation of the fuze node and the jammer node to the situation display module. The situation display module displays the real-time parameter information of the fuze and the jammer. The real-time parameter information specifically includes the working status, the currently set parameters, the setting type of the jammer model, the ammunition information detected by the current jammer, and the radar map. The radar map includes the position of the target relative to the main axis of the jammer. When the artillery has fired 8 ammunition, the jammer's reconnaissance module detects 4 of them. The number and relative position of the ammunition correspond to the information in the radar map.

[0099] When the simulation scenario is finished, the interference performance evaluation module obtains the simulation data and gives the final data statistics. Among the 9 rounds fired, the fuses of the second and sixth rounds of ammunition work normally, and the rest explode prematurely.

[0100] The experimental results show that the swept-frequency jammer model can work normally and has a good jamming effect on the continuous wave Doppler system fuze of the round-fired system.

[0101] Therefore, the present invention adopts the above-mentioned fuze information interference distributed simulation test system and method, which improves the scalability of the overall simulation architecture, makes the interaction process between the models and the anti-interference process of the fuze clearer and more intuitive, improves the simulation effect of the work flow of the fuze and the jammer, and provides instant and highly accurate interference effectiveness judgment for the fuze interference countermeasure simulation.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the method scheme of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary method personnel in the field should understand that they can still modify or replace the method scheme of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified method scheme to deviate from the spirit and scope of the method scheme of the present invention.

Claims

1. A distributed simulation test method for fuze information interference, characterized in that: The steps include: S1: The simulation planning module performs scenario configuration, plans simulation scenarios, generates simulation scenario script files, and sends the simulation script files to the simulation engine-simulation dynamic control module. The simulation engine-simulation dynamic control module receives the simulation scenario script files, parses the script files, and runs the simulation scenarios. S2: The simulation engine-simulation dynamic control module sends the parameter data of the simulation node to the equipment digital model in real time. The equipment digital model simulates the repeater jamming mechanism of the continuous wave Doppler fuze, the sweep frequency jamming mechanism of the continuous wave Doppler fuze, the repeater jamming mechanism of the continuous wave frequency modulation fuze, and the sweep frequency jamming mechanism of the continuous wave frequency modulation fuze, and stores the simulation results in the database; In step S2, the digital model of the equipment is used for mechanism simulation, which specifically includes the following steps: S21: The fuze node moves along the trajectory of the ammunition carrying the fuze, and determines the position and provides a firing signal by performing mixing and detection processing on the echo signal; S22: The jammer node conducts reconnaissance and interference on the fuze node, and the corresponding airspace fuzes of the jammer node and the fuze node explode prematurely or fail; In step S22, the jammer node conducts reconnaissance and jamming on the fuze node, which specifically includes the following steps: Step 1: The simulation planning module configures the jammer parameters, the jammer fuze transmits signals in the reconnaissance environment, and the simulation engine-simulation dynamic control module calculates the electromagnetic wave transmission of the jammer's reconnaissance results. If the calculation result is greater than the receiving sensitivity, the reconnaissance result is output and the next reconnaissance cycle is entered. If the calculation result is not greater than the receiving sensitivity, the next reconnaissance cycle is entered directly. Step 2: Traverse the simulation scene, find the jammer node and obtain the jammer node parameters, determine the working status of the corresponding jammer according to the jammer node parameters, if the jammer is in working state, check the working frequency of the jammer, if the working frequency meets the requirements, calculate the direct power and comprehensive power of the jammer according to the electromagnetic wave transmission model; S3: The simulation engine-simulation dynamic control module sends the parameter data of the simulation node to the situation display module in real time. The situation display module receives and displays the real-time parameter information of the simulation node. The simulation engine-simulation dynamic control module obtains the working status information of the equipment digital model in real time according to the simulation process requirements. The simulation process requirements are to calculate the signal power. The simulation engine-simulation dynamic control module obtains the antenna pattern of the missile-target intersection of the equipment digital model, the interference signal of the jammer, and the firing instruction of the fuze in real time according to the fuze node parameters and the jammer node parameters; S4: After the simulation scenario is finished, the interference performance evaluation module obtains the simulation data of the simulation engine-simulation dynamic control module and performs statistics on the simulation data; S5: The interference performance evaluation module calculates the power of the interference signal. If the parameters of the interference signal meet the standards, the interference performance evaluation module calls the database for query based on the parameters of the interference signal, and judges the interference result based on the query result. If the interference result meets the standards, it is judged that the fuze explodes prematurely due to the influence of the jammer. If the parameters of the interference signal do not meet the standards or the interference result does not meet the standards, it is judged that the fuze works normally, and the situation display module displays the effects of the fuze and jammer signals.

2. A fuze information type interference distributed simulation test method according to claim 1, characterized in that: In step S1, the simulation planning module performs fuse parameter configuration and jammer parameter configuration, specifically including functional business configuration, attribute parameter configuration and mobile model configuration. The simulation planning module distinguishes the fuse nodes and jammer nodes in the simulation scenario through functional business configuration. The simulation planning module adjusts the external attributes of the fuse nodes and jammer nodes through attribute parameter configuration, sets the fuse nodes to continuous wave Doppler fuses and continuous wave frequency modulation fuses, and sets the jammer nodes to forwarding jammers and sweeping frequency jammers.

3. A fuze information type interference distributed simulation test method according to claim 2, characterized in that: The simulation planning module sets the moving paths of the fuze node and the jammer node through the mobile model configuration. The moving path of the fuze node is set to the trajectory of the ammunition carrying the fuze, and the position coordinates of the jammer node are fixed.

4. A fuze information type interference distributed simulation test method according to claim 1, characterized in that: In step S22, the direct power and comprehensive power of the jammer are calculated according to the transmission model of electromagnetic waves. The specific calculation method is as follows: In the process of calculating direct power, atmospheric attenuation is not considered. The direct power is expressed as: ； in is the jammer radiated power, is the jammer transmitting antenna gain, is the jammer antenna directivity function, is the fuze receiving antenna gain, is the directivity function of the fuze antenna, is the fuze operating wavelength, To detect the amplitude polarization matching coefficient between the jammer antenna and the fuze echo, is the distance between the fuze and the reconnaissance equipment; The comprehensive power is set to the comprehensive power of the direct and reflected jammer. The comprehensive power is expressed as: ； in is the comprehensive coefficient, the comprehensive coefficient The value of is determined by approximate estimation, and the comprehensive coefficient The maximum value of is expressed as: ； Comprehensive coefficient The minimum value of is: ； in is the ratio factor between reflection and direct radiation, is the modulus of the reflection coefficient; In the target early explosion airspace, the echo signal power of the fuze transmission signal is greater than the receiving threshold of the fuze. If the power of the interference signal is greater than the power of the corresponding fuze echo signal, the fuze receives the interference signal. Set the fuze explosion height to The echo signal power is , considering the suppression coefficient as ,like , the interference signal meets the interference requirements at the energy level. After the fuze receives the signal that meets the energy conditions, it calls the database to make a judgment based on the jammer type and fuze type.

5. A system for the distributed simulation test method of fuze information interference as claimed in any one of claims 1 to 4, characterized in that: It includes a simulation engine-simulation dynamic control module, a simulation planning module, a situation display module, an equipment digital model, an interference performance evaluation module and a distributed data interaction interface. The simulation engine-simulation dynamic control module is connected to the equipment digital model through a distributed data interaction interface.

6. The system of the fuze information type interference distributed simulation test method according to claim 5 is characterized in that: The simulation engine-simulation dynamic control module includes component system management tools, sensor components, controller components, actuator components, capability simulation components, coordinate transformation components, electromagnetic transmission calculation components, simulation event scheduling components and time management tools. The simulation planning module includes simulation scenario planning submodule, fuze parameter configuration submodule and jammer parameter configuration submodule. The situation display module includes fuze parameter display submodule, jammer parameter display submodule and simulation result display submodule. The equipment digital model includes fuze model, jammer model and missile-target intersection model. If the ammunition has differences in fall angle, rotation speed, bullet speed, distance and antenna, the missile-target intersection model provides a signal power calculation method between the fuze and the target, and between the fuze and the jammer. The interference performance evaluation module includes a simulation data statistics submodule and a simulation data acquisition submodule. The distributed data interaction interface adopts the distributed simulation message bus DIS protocol.

7. The system of a fuze information type interference distributed simulation test method according to claim 6 is characterized in that: The fuze model includes the continuous wave Doppler fuze model and the continuous wave frequency modulation fuze model. The modeling parameters of the continuous wave Doppler fuze model include the fuze emission signal frequency , fuze transmission power , Fuze transmitting antenna gain , fuze transmitting antenna directivity function , Fuze receiving antenna gain , fuze receiving antenna directivity function , working bandwidth , receiving sensitivity, Doppler frequency range, amplitude rate threshold and Doppler signal amplitude threshold. The modeling parameters of the continuous wave frequency modulation fuze model include the initial frequency bandwidth , modulation period , modulation frequency deviation , fuze transmission power , fuze transmitting antenna gain , fuze transmitting antenna directivity function , fuze receiving antenna gain , fuze receiving antenna directivity function , working bandwidth and receiving sensitivity.

8. The system of a fuze information type interference distributed simulation test method according to claim 6 is characterized in that: The jammer model includes a repeater jammer model and a sweeping frequency jammer model. The repeater jammer model delays and amplifies the received fuze transmission signal to obtain the target fuze, sends the target fuze to the target position, and realizes early bombing operation by generating misjudgment. The modeling parameters of the repeater jammer model include the operating frequency band, receiving antenna gain, receiving antenna directivity function, receiver sensitivity, transmitting antenna gain, transmitting antenna directivity function and transmitting power.

9. The system of a fuze information type interference distributed simulation test method according to claim 6, characterized in that: The swept-frequency jammer model sets the starting frequency and starting bandwidth of the jammer's transmitted signal. The jammer's transmitted signal sweeps according to a specific period and frequency. If the center frequency of the jammer signal enters the receiving bandwidth of the fuze, the fuze is interfered by the jammer signal. The modeling parameters of the swept-frequency jammer model include the operating frequency band, receiving antenna gain, receiving antenna directivity function, receiver sensitivity, transmitting antenna gain, transmitting antenna directivity function, transmitting power sweep range, number of frequency points and dwell time.

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