Digital simulator

Abstract

The invention discloses a digital simulator, which comprises an equipment simulation module used for receiving and caching all target stream data and intervention instructions and working airspace issued by a system scheduling module, obtaining data and states, and sending the obtained data and states to a digital signal processing module; the digital signal processing module is used for performing processing simulation on the received data and state sent by the equipment simulation module, constructing scene information, generating echo simulation data according to the scene information, and performing signal processing and display on the echo simulation data; the system scheduling module is used for receiving an instruction sent by an upper-level radar, sending an equipment seat state and information according to the instruction, scheduling the equipment seat to work normally according to a time sequence, and sending an intervention instruction and a working airspace to the equipment simulation module; and the basic module is used for realizing data interaction and model parameter reading between the system scheduling module and the equipment simulation module as well as between the digital signal processing module and the system scheduling module.

Description

Technical Field

[0001] The invention belongs to the technical field of radar operation and use training, and in particular relates to a digital simulator. Background Art

[0002] Carrying out practical training is the fundamental way to improve combat effectiveness. Only by constantly improving combat effectiveness can we win in future combat operations. Continuously improving and innovating training methods and means can improve the effectiveness of practical training and thus promote the generation of combat effectiveness.

[0003] Compared with actual equipment training, simulation training is widely used because of its low cost, short time and high benefits. Computer-based simulation training further improves the level of actual combat training. It uses computer virtual simulation technology to build a virtual combat environment, simulate real scenes, and allow trainees to interact with operations, which is convenient for them to practice and reflect, and improve their skills and coping capabilities.

[0004] Compared with semi-physical simulators, digital simulators have the advantages of low development and use costs, flexible networking and deployment, realistic and flexible training scenario construction, high training safety, simple training, high training efficiency, and convenience in conducting integrated joint training that integrates command decision-making and operational control.

[0005] The existing digital simulators were limited by the knowledge of simulation training at the time, technical conditions and other factors, and could only simulate the equipment operation process. However, there was still a big gap in the realism of the simulation in terms of equipment combat capabilities, target characteristics, battlefield environment, etc. The networked confrontation training capabilities were extremely limited, and could only meet the needs of new operators to familiarize themselves with the basic equipment operation procedures, but could not meet the needs of integrated joint training. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a digital simulator.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] The invention discloses a digital simulator, comprising:

[0009] The equipment simulation module is used to receive and cache all target flow data and the intervention instructions and working airspace issued by the system scheduling module, acquire data and status, and send the acquired data and status to the digital signal processing module;

[0010] A digital signal processing module is used to process and simulate the data and status sent by the received equipment simulation module, construct scene information according to the processing simulation results, generate echo simulation data according to the scene information, and perform signal processing and display on the echo simulation data;

[0011] The system scheduling module is used to receive instructions from the superior radar, send equipment seat status and information according to the instructions, schedule the equipment seats to work normally according to the time sequence, and send intervention instructions and working airspace to the equipment simulation module;

[0012] The basic module is used to realize data interaction and model parameter reading between the system scheduling module and the equipment simulation module, the digital signal processing module and the system scheduling module.

[0013] Preferably, the system scheduling module includes:

[0014] The communication module is used to receive instructions from the superior radar and send equipment seat status and information according to the instructions;

[0015] The clock module is used to receive the equipment seat status and information sent by the communication module, and schedule the equipment seats to work normally according to the timing;

[0016] The database module is used to complete the reading of equipment parameter information and send intervention instructions and working airspace to the equipment simulation module.

[0017] Preferably, the data and status in the equipment simulation module are obtained by the following method:

[0018] All received target flow cache data, intervention instructions, and working airspace data are calculated through the algorithm model to obtain data and status.

[0019] Preferably, the algorithm model includes a threat calculation model algorithm, a shooting element calculation algorithm, a launch vehicle selection algorithm and a damage judgment algorithm.

[0020] Preferably, the basic module comprises:

[0021] The coordinate conversion module is used to realize the data interaction between the system scheduling module and the equipment simulation module, the digital signal processing module and the system scheduling module, and complete the coordinate conversion calculation and auxiliary calculation between various coordinate systems;

[0022] The system parameter module is used to obtain the model parameters according to the calculated transformation coordinates.

[0023] Preferably, the coordinate conversion in the coordinate conversion module includes conversion from geographic rectangular coordinate system to geocentric rectangular coordinate system, from geocentric rectangular coordinate system to geographic rectangular coordinate system, from geocentric rectangular coordinate system to station-centered rectangular coordinate system, and from station-centered rectangular coordinate system to geocentric rectangular coordinate system.

[0024] Preferably, the conversion formula from the geocentric rectangular coordinate system to the station-centric rectangular coordinate system is:

[0025]

[0026] Among them, (X, Y, Z) are the geocentric rectangular coordinates, and (x, y, z) are the ground rectangular coordinates.

[0027] Preferably, the conversion formula from the station-centered rectangular coordinate system to the geocentric rectangular coordinate system is:

[0028]

[0029] in, is the coordinate of target T in the station center rectangular coordinate system o2x2y2z2, is the coordinate of target T in the station center rectangular coordinate system o1x1y1z1, is the coordinate of the station center o1 in the geocentric rectangular coordinate system, are the coordinates of the station center o2 in the geocentric rectangular coordinate system.

[0030] Preferably, the digital signal processing module comprises:

[0031] The scenario construction module is used to process and simulate the data and status sent by the equipment simulation module, edit, direct and control the scenario information according to the processing and simulation results, and send the set scenario information;

[0032] The echo signal generation module is used to receive the scene information sent by the scene construction module, and generate radar echo simulation data containing target signals, clutter information and interference signals in real time according to the scene information, and then transmit the echo simulation data to the signal processing module;

[0033] The signal processing module is used to perform signal processing on the echo simulation data, and then send the processed point information and various parameter information to the data processing module;

[0034] The data processing module is used to process the point information and various parameter information and send the data to the interface display module;

[0035] The interface display module is used to display data.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The digital simulator provided by the present invention adopts high-performance computing technology to realize the principle simulation and combat capability simulation of the core equipment of the weapon system, such as the guidance radar, command and control, launch control, missiles, etc., as well as the simulation of combat target characteristics, battlefield geographical environment, electromagnetic environment, etc. The desktop version of human-computer interaction software is used to realize the combat support operation and combat use simulation of the weapon system equipment. From multiple aspects such as the internal mechanism, external use, combat target, combat environment, etc. of the weapon system, a high-confidence simulation of the weapon system and its combat use is achieved, so that trainees can achieve an undifferentiated combat experience between the actual installation and the digital simulation training system, ensuring the high confidence of the training results and the goodness of the training effect.

[0038] 2. The digital simulator provided by the present invention adopts flexible software technology and networking technology, and can be connected with command information systems at all levels, combat planning systems, blue force simulation systems, battlefield environment simulation systems, training records and evaluation systems, etc. according to the technical standards of actual installation, realizing seamless connection between actual installation-digital simulation training system-computer structured forces, and quickly building a multi-level, multi-service joint training system that meets the needs of actual combat training, realizing system training and scientific and technological training, and meeting the needs of military training transformation and upgrading.

[0039] 3. The hardware environment in which the digital simulator system of the present invention operates is general-purpose computers and other off-the-shelf products, which have low procurement costs, good versatility, and easy maintenance. The simulation training software is highly compatible, reliable, and secure. It can be quickly copied and deployed on a hardware platform that meets the requirements, which is conducive to rapid replication and multi-model expansion. In conjunction with the battlefield environment simulation system, a combat training simulation system close to practice is constructed to provide strong support for military training. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural block diagram of a digital simulator simulation scheduling system in an embodiment of the present invention;

[0041] Figure 2 is a working flow chart of the clock module in an embodiment of the present invention;

[0042] Figure 3 is a work flow chart of the equipment simulation module in an embodiment of the present invention;

[0043] Figure 4 is an operation flow chart of a digital simulator in an embodiment of the present invention;

[0044] Figure 5 4 is a structural block diagram of a digital signal processing module in an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The following is a description of the embodiments of the present invention. Figures 1 to 5, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] like Figure 1 As shown, an embodiment of the present invention provides a digital simulator, including:

[0047] The system scheduling module is used to receive instructions from the superior radar, send equipment seat status and information according to the instructions, schedule the equipment seats to work normally according to the time sequence, and send intervention instructions and working airspace to the equipment simulation module;

[0048] The system scheduling module in the embodiment of the present invention specifically includes:

[0049] The communication module is used to receive the instructions sent by the superior radar, and send the equipment seat status and information according to the instructions. Specifically, the communication module completes the interaction with other seats, sends the current working status of the equipment, workstation status, guidance radar tracking information, missile information, and kill results, and receives the superior radar radiation control, level transition, working mode instructions and target indications, and at the same time receives the assumption opening of the guidance and control, process control instructions and blue target flow data;

[0050] The clock module is used to receive the equipment seat status and information sent by the communication module, and schedule the equipment seat to work normally according to the timing. Specifically, the clock module receives the clock scheduling of the communication module and drives the clock module to work in order according to the clock beat, such as Figure 2 shown.

[0051] The database module is used to complete the reading of equipment parameter information and send intervention instructions and working airspace to the equipment simulation module. Specifically, it is used to complete the reading of data scenario deployment information. The data scenario deployment information specifically includes the seat deployment information and seat affiliation information in the scenario. After receiving the loading instruction, the database module reads the middleware according to the scenario ID carried in the loading instruction to obtain the corresponding information of this seat in the scenario.

[0052] The above three modules support the completion of driving work within the system and interaction with other seats in the system.

[0053] like Figure 3As shown, the equipment simulation module is used to receive and cache all target flow data and the intervention instructions and working airspace issued by the system scheduling module, and obtain data and status, and send the obtained data and status to the digital signal processing module; the equipment simulation module is a simulator software entity, including a weapon framework and a weapon model. The weapon framework is mainly used for inputting targets and weapon-related instructions, and the weapon model is used to simulate the overall operation process of the weapon. The equipment simulation module is used to manage the interaction between the weapon model of this seat and the algorithm model of the weapon simulation system;

[0054] The data and status in the equipment simulation module are obtained by the following method:

[0055] All received target flow cache data, intervention instructions and working airspace data are calculated through the algorithm model to obtain data and status. The data and status include target flow information, target indication information, turn sector information, equipment status information, target track information, interceptor missile status information, hit information, etc.

[0056] The above algorithm model includes threat calculation model algorithm, shooting element calculation algorithm, launch vehicle selection algorithm and damage judgment algorithm.

[0057] Threat calculation model algorithm, the main factors considered in target threat judgment include the distance between the target and the position, the speed of the target, the height of the target from the position, the azimuth of the target relative to the position, the importance level of the position, etc.

[0058] The shooting element calculation algorithm and shooting element calculation simulation establish the key point envelope of the vertical killing zone and horizontal killing zone of a typical target according to the interception capability of the equipment system. The key point information includes the far boundary, near boundary, high boundary, low boundary and side boundary, and performs typical height division.

[0059] Launcher selection algorithm, launcher selection means that the launch control system assigns the target to the launcher that is most advantageous for interception according to certain criteria based on the incoming direction of the tracked target, route shortcuts and other information. Launcher selection is usually performed automatically by the launch control system according to the firepower allocation criteria, or it can be manually assigned.

[0060] Damage judgment algorithm, after the missile and target encounter, the target damage judgment simulation module makes a damage judgment on the target based on the missile miss amount and the target damage probability, and gives the missile explosion point information and target damage results.

[0061] The basic module is used to realize data interaction and model parameter reading between the system scheduling module and the equipment simulation module, the digital signal processing module and the system scheduling module, and provides basic service support for the operation of the entire digital simulator. The basic module includes:

[0062] The coordinate conversion module is used to realize the data interaction between the system scheduling module and the equipment simulation module, the digital signal processing module and the system scheduling module, and complete the coordinate conversion calculation and auxiliary calculation between various coordinate systems;

[0063] The system parameter module is used to obtain the model parameters according to the calculated transformation coordinates.

[0064] The coordinate conversion in the coordinate conversion module includes the conversion from geographic rectangular coordinate system to geocentric rectangular coordinate system, geocentric rectangular coordinate system to geographic rectangular coordinate system, geocentric rectangular coordinate system to station-centered rectangular coordinate system, and station-centered rectangular coordinate system to geocentric rectangular coordinate system. The above conversion functions are for the purpose of making the simulation training closer to the actual equipment, and closer to the display and internal logic of the actual equipment. The data received from the outside is the geographic coordinate system, which is converted into the station-centered coordinate system inside the digital simulator. The interface displays and outputs the geographic coordinate system, station-centered coordinate system, geocentric coordinate system, etc.

[0065] The conversion formula from the geocentric rectangular coordinate system to the station-centric rectangular coordinate system is:

[0066]

[0067] Among them, (X, Y, Z) are the geocentric rectangular coordinates, and (x, y, z) are the ground rectangular coordinates.

[0068] Preferably, the conversion formula from the station-centered rectangular coordinate system to the geocentric rectangular coordinate system is:

[0069]

[0070] in, is the coordinate of target T in the station center rectangular coordinate system o2x2y2z2, is the coordinate of target T in the station center rectangular coordinate system o1x1y1z1, is the coordinate of the station center o1 in the geocentric rectangular coordinate system, are the coordinates of the station center o2 in the geocentric rectangular coordinate system.

[0071] In an embodiment of the present invention, the digital signal processing module is used to process and simulate the data and status sent by the received equipment simulation module, and construct the scene information according to the processing simulation results, generate echo simulation data according to the scene information, and perform signal processing and display on the echo simulation data, specifically including:

[0072] The scenario construction module is used to process and simulate the data and status sent by the received equipment simulation module, and edit, direct and control the scenario information according to the processing simulation results, and send the set scenario information; the specific scenario construction module is based on a graphical human-computer interaction interface, which can facilitate the radar deployment position, radar parameter setting, target setting, and support the human intervention function of the digital simulator.

[0073] The echo signal generation module is used to receive the scene information sent by the scene construction module, and generate radar echo simulation data containing target signals, clutter information and interference signals in real time according to the scene information, and then transmit the echo simulation data to the signal processing module;

[0074] The signal processing module is used to process the echo simulation data, including processing algorithms such as pulse compression, MTI, MTD, CFAR, SLC, etc., and then send the processed point information and various parameter information to the data processing module;

[0075] The data processing module is used to process the point information and various parameter information and send the data to the interface display module;

[0076] The interface display module is used to display data.

[0077] Based on the needs of user scenarios and development and debugging, the digital signal processing module of the present invention supports two different modes: remote control through the network or operation on the local computer. Based on this, the digital signal processing module needs to separate the user interface from the software computing function and data processing function, and remove the dependency between the user interface and computer resources. Therefore, the present invention makes the user display interface independent and connects the display interface to the software computing module through the network communication module using the TCP / IP network. When the local mode is adopted, the interface display module connects to the local network interface to operate the computing resources of this computer. When the remote mode is adopted, the interface display module implements remote control by accessing the corresponding IP address, so as to achieve the goal of system design.

[0078] The system scheduling module, equipment simulation module and basic module in the embodiment of the present invention constitute a simulation scheduling system in a digital simulator. Figure 4 As shown, the operation process of the simulation scheduling system of the digital simulator provided by the embodiment of the present invention is:

[0079] After the system is started, the user's external guidance and control system or early warning center first sends an initialization file to the digital simulator simulation scheduling system. The system scheduling module completes the binding of the system initialization parameters. After the binding is completed, the external guidance and control system sends dynamic air situation information to the digital simulator simulation scheduling system in real time. During the whole process, the digital simulator simulation scheduling system must receive the control of the external guidance and control system through the system scheduling module (including initialization, start, stop and simulator status monitoring). The digital simulator simulation scheduling system periodically sends heartbeat messages to the guidance and control subsystem through the system scheduling module.

[0080] The digital simulator simulation scheduling system receives the parameter-level information of guidance and control in real time through the system scheduling module. The equipment simulation module illuminates the guidance radar model and starts searching for the target based on the indicated target information. After stably tracking the target, it performs an interception feasibility check and calculates the shooting parameters to form the shooting conditions. According to the launch strategy, the missile is launched to intercept the target. After the missile and the target encounter, the system reports the damage assessment result to the external guidance and control system or early warning center through the system scheduling module. The entire process is used in the user's site environment.

[0081] like Figure 5 As shown, the present invention uses the advantages of high-performance GPU parallel computing to implement the target echo signal generation, clutter signal generation and signal processing parts in the digital simulation of the radar using GPU, and uses the advantages of CPU in logic control to complete the digital simulation of other parts of the radar. Signal processing includes digital beam forming (DPF), pulse compression, moving target indication (MTI), moving target detection (MTD), constant false alarm processing (CFAR), sidelobe cancellation (SLC), etc.

[0082] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A digital simulator, characterized in that include: The equipment simulation module is used to receive and cache all target flow data and the intervention instructions and working airspace issued by the system scheduling module, acquire data and status, and send the acquired data and status to the digital signal processing module; A digital signal processing module is used to process and simulate the data and status sent by the received equipment simulation module, construct scene information according to the processing simulation results, generate echo simulation data according to the scene information, and perform signal processing and display on the echo simulation data; The system scheduling module is used to receive instructions from the superior radar, send equipment seat status and information according to the instructions, schedule the equipment seats to work normally according to the time sequence, and send intervention instructions and working airspace to the equipment simulation module; The basic module is used to realize data interaction and model parameter reading between the system scheduling module and the equipment simulation module, the digital signal processing module and the system scheduling module.

2. The digital simulator according to claim 1, characterized in that: The system scheduling module includes: The communication module is used to receive instructions from the superior radar and send equipment seat status and information according to the instructions; The clock module is used to receive the equipment seat status and information sent by the communication module, and schedule the equipment seats to work normally according to the timing; The database module is used to complete the reading of equipment parameter information and send intervention instructions and working airspace to the equipment simulation module.

3. The digital simulator according to claim 1, characterized in that The data and status in the equipment simulation module are obtained by the following method: All received target flow cache data, intervention instructions, and working airspace data are calculated through the algorithm model to obtain data and status.

4. The digital simulator according to claim 3, characterized in that: The algorithm model includes a threat calculation model algorithm, a shooting element calculation algorithm, a launch vehicle selection algorithm and a damage judgment algorithm.

5. The digital simulator according to claim 1, characterized in that: The basic module includes: The coordinate conversion module is used to realize the data interaction between the system scheduling module and the equipment simulation module, the digital signal processing module and the system scheduling module, and complete the coordinate conversion calculation and auxiliary calculation between various coordinate systems; The system parameter module is used to obtain the model parameters according to the calculated transformation coordinates.

6. The digital simulator according to claim 1, characterized in that: The coordinate conversion in the coordinate conversion module includes geographic rectangular coordinate system to geocentric rectangular coordinate system, geocentric rectangular coordinate system to geographic rectangular coordinate system, geocentric rectangular coordinate system to station-centered rectangular coordinate system, and station-centered rectangular coordinate system to geocentric rectangular coordinate system.

7. The digital simulator according to claim 6, characterized in that The conversion formula from the geocentric rectangular coordinate system to the station-centric rectangular coordinate system is: Among them, (X, Y, Z) are the rectangular coordinates of the center of the earth, and (x, y, z) are the rectangular coordinates of the center of the station.

8. The digital simulator according to claim 6, characterized in that The conversion formula from the station center rectangular coordinate system to the geocentric rectangular coordinate system is: in, is the coordinate of target T in the station center rectangular coordinate system o2x2y2z2, is the coordinate of target T in the station center rectangular coordinate system o1x1y1z1, is the coordinate of the station center o1 in the geocentric rectangular coordinate system, are the coordinates of the station center o2 in the geocentric rectangular coordinate system.

9. The digital simulator according to claim 1, characterized in that: The digital signal processing module comprises: The scenario construction module is used to process and simulate the data and status sent by the equipment simulation module, edit, direct and control the scenario information according to the processing and simulation results, and send the set scenario information; The echo signal generation module is used to receive the scene information sent by the scene construction module, and generate radar echo simulation data containing target signals, clutter information and interference signals in real time according to the scene information, and then transmit the echo simulation data to the signal processing module; The signal processing module is used to perform signal processing on the echo simulation data, and then send the processed point information and various parameter information to the data processing module; The data processing module is used to process the point information and various parameter information and send the data to the interface display module; The interface display module is used to display data.

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