Combat digital simulation model-in-the-loop testing system and method based on multi-source information fusion

Abstract

This invention provides a loop-in-the-loop testing system and method for combat digital simulation models based on multi-source information fusion, belonging to the field of mixed reality interaction and digital simulation models. It consists of a physical subsystem and a combat digital simulation model. The physical subsystem includes complete physical devices and physical sensors, with the sensors positioned at designated locations on the physical devices. The combat digital simulation model includes virtual sensors and virtual simulation scenarios, with the virtual sensors positioned at corresponding virtual simulation scenarios. This system is used to verify the combat digital simulation model. During verification, the physical subsystem is broken down into real-world components, and the combat digital simulation model is correspondingly broken down into multiple combat digital simulation sub-models. Real-world components replace the corresponding combat digital simulation sub-models. After verifying all combat digital simulation sub-models, the test is completed. This invention also provides a method for operating the above system. This invention can verify the consistency between the combat digital simulation model and the real-world situation.

Description

Technical Field

[0001] This invention belongs to the field of mixed reality (XR) interaction and digital simulation models, specifically a test system and method for virtual individual combat simulation models based on extended reality and multi-source information fusion. Background Technology

[0002] In modern warfare, combat simulation models are a crucial component of modern digital warfare. Simulating individual soldier combat capabilities using multi-source information fusion digital models is common knowledge. However, establishing such models is a challenging process, requiring extremely high battlefield conditions and equipment wear and tear, making large-scale deployment difficult. With the rapid development of virtual reality and augmented reality technologies, these technologies are increasingly being applied to individual soldier combat training systems, particularly in multi-source information fusion training, where they have proven highly effective.

[0003] However, new problems have arisen during the application of new technologies. The realism of equipment digital models cannot be guaranteed, and significant discrepancies have emerged between virtual and real training. How to apply mixed reality technology to the establishment of individual soldier combat models is an urgent issue to be addressed. Testing and validating individual soldier combat simulation models can greatly improve this problem.

[0004] Currently, several methods have been disclosed in the field of testing using mixed reality techniques. Patent application "A Human-Machine Co-driving Test Method Based on Digital Twin Virtual-Real Interaction Technology (CN112924185B)" proposes a method that uses virtual simulation scenarios and virtual sensors to provide an external virtual test scenario for a real vehicle. The vehicle's autonomous driving controller can receive control commands from the driver in the driving simulator and also receive driver behavior information from the driver behavior monitoring module. Patent application "Test Method and Apparatus for Autonomous Vehicles Based on Mixed Reality (CN112819968A)" also discloses a method and apparatus that proposes determining target scene elements based on the test scenario, generating virtual target scene elements, and inputting the state information of the virtual target scene elements into the decision control system of the autonomous vehicle, so that the autonomous vehicle can drive in the test scenario according to the state information of the virtual target scene elements.

[0005] However, the above methods still have some shortcomings and defects. Therefore, it is necessary to develop a new method for testing individual combat simulation models based on mixed reality to overcome the above defects of existing technologies. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a combat digital simulation model in-the-loop testing system and method based on multi-source information fusion. Based on extended reality, it integrates multi-source information and uses mixed reality interaction methods to test the digital simulation model module by module through in-the-loop testing, verifying the consistency between the equipment digital simulation model and the real system. This aims to solve the problem of the lack of realism in existing individual soldier combat simulation models and the resulting large gap between virtual training and real training.

[0007] To achieve the above objectives, this invention provides a combat digital simulation model-in-the-loop testing system based on multi-source information fusion. The system comprises a physical subsystem and a combat digital simulation model. The physical subsystem includes complete physical devices and physical sensors. The physical sensors are positioned at designated locations on the physical devices to collect corresponding parameters. The combat digital simulation model includes virtual sensors and virtual simulation scenarios. The virtual sensors are positioned at corresponding virtual simulation scenarios to collect parameters from those scenarios.

[0008] It is used to verify the combat digital simulation model. During the verification, the physical subsystem is broken down into real blocks, and the combat digital simulation model is broken down into multiple combat digital simulation sub-models. The real blocks are used to replace the corresponding combat digital simulation sub-models. After verifying all the combat digital simulation sub-models, the test is completed.

[0009] Furthermore, when verifying the combat digital simulation model, the entire in-loop test system is split into two levels: components and functions. The component-level split is for the complete physical subsystem, which is broken down into multiple smallest real blocks. The function-level split is for the combat digital simulation model, which is broken down into combat digital simulation sub-models corresponding to multiple smallest real blocks. Each combat digital simulation sub-model corresponds to one real block.

[0010] Furthermore, after obtaining multiple combat digital simulation sub-models, each real module replaces the corresponding combat digital simulation sub-model and is then connected to the entire in-the-loop test system for testing to verify the consistency between the corresponding combat digital simulation sub-model and the corresponding real module.

[0011] If each combat digital simulation sub-model has good consistency with the real modules, then the entire combat digital simulation sub-model has good consistency with the real situation.

[0012] Furthermore, the input and output interfaces of the tested combat digital simulation sub-model are consistent with those of the real module. It runs in a loop test system. When the inputs are the same, the system detects whether there is a difference between the output of the tested combat digital simulation sub-model and the output of the real module. If there is no difference, it indicates that the tested combat simulation sub-model is consistent with the real situation.

[0013] According to a second aspect of the present invention, a test method for a combat digital simulation model-in-the-loop test system based on multi-source information fusion, as described above, is also provided, comprising the following steps:

[0014] Step 1: Decompose the entire in-the-loop test system into two levels: components and functions. This involves breaking down the in-the-loop test system into the smallest real-world components and the smallest functional modules. The smallest functional module corresponds to the combat digital simulation sub-model.

[0015] Step 2: Based on the minimum functional modules, connect the inputs and outputs of the corresponding real blocks of each digital simulation sub-model to the functional-level combat digital simulation sub-model. In-loop testing is then implemented by using real blocks to replace the combat digital simulation sub-model.

[0016] Step 3: Perform in-loop testing on each combat digital simulation sub-model to verify functional consistency. If all combat digital simulation sub-models are consistent with the actual situation, the entire combat digital simulation model is considered consistent with the actual situation; otherwise, it is considered inconsistent.

[0017] Furthermore, in step one, a minimum functional module corresponds to a minimum combat digital simulation sub-model, and a minimum combat digital simulation sub-model corresponds to a real module.

[0018] Furthermore, in step two, the in-the-loop test system is run, and the status of the in-the-loop test system is observed to ensure it is functioning normally. During the test, a mixed reality interaction method consisting of augmented reality and virtual reality is applied to the in-the-loop test.

[0019] Furthermore, in step two, when conducting in-the-loop testing, the scenarios of the in-the-loop testing system are first built. The scenario construction of the in-the-loop testing system includes functional scenarios, logical scenarios, and specific scenarios. The scenarios of the in-the-loop testing system integrate and process equipment data, behavioral data, and environmental data. This scenario construction method, which proceeds from functional framework to logical layout and then to specific construction, is used to integrate the diverse data of equipment data, environmental data, and behavioral data existing in the scenarios of the in-the-loop testing system, thereby supporting the verification of the combat digital simulation model.

[0020] Furthermore, in step two, according to the division of the smallest functional modules, the inputs and outputs of the real blocks corresponding to each smallest functional module are connected into the combat digital simulation model. By using each real block to replace the corresponding combat digital simulation sub-model, traversal testing is achieved. The system runs in the loop test system, and the status of the loop test system is observed to see if it is normal. If it is normal, it means that the corresponding combat digital simulation sub-model is consistent with the actual situation; otherwise, it is inconsistent.

[0021] Overall, the above-described technical solutions conceived by this invention have the following beneficial effects compared with the prior art: In the mixed reality-based individual combat simulation model testing system and method of this invention, the multi-source information fusion of individual soldiers is combined with mixed reality testing formed by augmented reality and virtual reality, and the combat simulation model is tested in the loop by modules, which can better verify the consistency of the digital model. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the composition of the in-loop test system for the combat digital simulation model based on multi-source information fusion in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the in-loop testing system for the combat digital simulation model based on multi-source information fusion according to the present invention;

[0024] Figure 3 This is a schematic diagram showing the breakdown of the combat digital simulation model components of the individual soldier combat system in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram showing the functional breakdown of the combat digital simulation model of the individual soldier combat system in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram illustrating the functional breakdown and verification of a man-portable air defense missile in an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] Currently, virtual reality (VR) and augmented reality (AR) are widely used in interacting with digital models. Mixed reality (XR) interaction methods, formed by VR and AR devices, offer a more immersive and engaging experience compared to traditional digital model interaction methods. XR interaction methods can provide an effective testing approach for digital simulation models.

[0029] This invention proposes an in-loop testing system and method for a combat digital simulation model based on multi-source information fusion. The in-loop testing system includes the combat digital simulation model and is used to test the combat digital simulation model and verify the consistency between the combat digital simulation model and the real situation.

[0030] Figure 1 This is a schematic diagram of the composition of the in-loop test system for the combat digital simulation model based on multi-source information fusion in this embodiment of the invention. Figure 1As can be seen, the in-loop test system consists of a complete physical subsystem and a complete virtual closed-loop subsystem. The complete physical subsystem includes complete physical devices and physical sensors. The physical sensors are set at the designated locations of the physical devices to collect corresponding parameters. The complete virtual closed-loop subsystem is the combat digital simulation model, which includes virtual sensors and virtual simulation scenarios. The virtual sensors are set at the corresponding virtual simulation scenarios to collect parameters in the corresponding virtual simulation scenarios.

[0031] When verifying the mechanism of the combat digital simulation model, the entire in-loop test system is split into two levels: components and functions. The component level split is for the complete physical subsystem, which is broken down into multiple smallest real blocks. The function level split is for the combat digital simulation model, which is broken down into combat digital simulation sub-models corresponding to multiple smallest real blocks. Each combat digital simulation sub-model corresponds to one real block.

[0032] After obtaining multiple operational digital simulation sub-models, each real-world module replaces its corresponding operational digital simulation sub-model and is then connected to the entire in-the-loop test system for testing to verify the consistency between the corresponding operational digital simulation sub-model and the corresponding real-world module. If each operational digital simulation sub-model shows good consistency with the real-world module, then the overall operational digital simulation sub-model shows good consistency with the real situation.

[0033] The input and output interfaces of the tested combat digital simulation sub-model are consistent with those of the real module. It runs in a loop test system to check whether the loop test system is operating normally. When the inputs are the same, it is checked whether there is a difference between the output of the tested combat digital simulation sub-model and the output of the real module.

[0034] Figure 2 This is a schematic diagram of the in-loop testing system for the combat digital simulation model based on multi-source information fusion, as described in this invention. Figure 2 It can be seen that it mainly includes the following steps:

[0035] Step 1: Decompose the entire in-the-loop test system into two levels: components and functions. The in-the-loop test system is divided into the smallest real block and the smallest functional module. One smallest functional module corresponds to one smallest combat digital simulation sub-model, and one smallest combat digital simulation sub-model corresponds to one real block.

[0036] Step 2: Based on the minimum functional modules, connect the inputs and outputs of the corresponding real blocks of each digital simulation sub-model to the functional-level combat digital simulation sub-model. In-loop testing is then implemented by using real blocks to replace the combat digital simulation sub-model.

[0037] Running an in-the-loop test system and observing its normal operation is crucial. However, due to the virtual nature of the digital simulation model, the interactive effects are difficult to perceive realistically during testing. In engineering practice, a multimodal fusion interaction method based on mixed reality (AR) and virtual reality can be used to provide test subjects with a more intuitive and immersive experience.

[0038] Meanwhile, due to the virtual nature of the combat digital simulation model, the test is conducted in a virtual-real fusion environment. In order to achieve consistency between the virtual-real fusion environment and the real environment, and to make the virtual-real fusion environment cognitive and extensible, it can bring the test subjects a highly immersive experience.

[0039] The scenario modeling of the in-the-loop testing system is based on a three-tiered scenario construction: functional scenario, logical scenario, and specific scenario. In this three-tiered scenario construction, the modeling objects are divided into entity models, behavioral models, and environmental models, enabling the fusion and processing of equipment data, behavioral data, and environmental data within the scenario. This scenario construction approach, from functional framework to logical layout to specific construction, allows for the integration of diverse data from equipment, environment, and behavior within the scenario, supporting the system's functional verification.

[0040] Specifically, according to the division of the smallest functional modules, the inputs and outputs of the real blocks corresponding to each smallest functional module are connected into the combat digital simulation model. By using real blocks to replace the corresponding combat digital simulation sub-models, in-loop testing is achieved. The in-loop test system is run, and the status of the in-loop test system is observed. If it is normal, it means that the corresponding combat digital simulation sub-model is consistent with the actual situation; otherwise, it is inconsistent.

[0041] Step 3: Perform in-loop testing on each combat digital simulation sub-model to verify functional consistency. If all combat digital simulation sub-models are consistent with the actual situation, the entire combat digital simulation model is considered consistent with the actual situation; otherwise, it is considered inconsistent.

[0042] Example

[0043] The individual soldier combat system is a comprehensive system that integrates various combat modules such as protection, firepower, and electronic information. Taking the consistency testing of its combat digital simulation model as an example, the specific steps include the following:

[0044] Step 1: Firstly, the individual soldier combat system is broken down into components. Figure 3 This is a schematic diagram showing the breakdown of the combat digital simulation model components of the individual soldier combat system in an embodiment of the present invention, such as... Figure 3As shown, the individual soldier combat system is broken down into weapon modules, equipment modules, computer modules, radio modules, protection modules, and software modules. However, the protection and software modules are not explicitly indicated in the diagram. On the other hand, Figure 4 This is a schematic diagram illustrating the functional breakdown of the combat digital simulation model of the individual soldier combat system in an embodiment of the present invention, as shown below. Figure 4 As shown, the combat digital simulation model corresponding to the individual soldier combat system is divided according to its functional modules, which mainly include protection functional modules, firepower functional modules, electronic information functional modules, and medical rescue functional modules, respectively corresponding to combat digital simulation protection functional sub-model, combat digital simulation protection firepower functional sub-model, combat digital simulation protection electronic information functional sub-model, and combat digital simulation medical rescue functional sub-model.

[0045] The first level of component decomposition-in-the-loop testing verifies whether the functionality of the combat digital simulation sub-model corresponding to each real component is consistent with the original equipment, focusing on verifying the functional consistency of the individual equipment itself.

[0046] The second level of functional decomposition in-loop testing verifies whether the multi-source information flow in the combat digital simulation model is consistent with the real situation. It focuses on whether the data flow and integration between various functional modules can be as real as in the real situation. Only the normal operation of the data flow can support the individual soldier combat system to become an information node on the battlefield, thereby exerting the power of the entire information system and maximizing the strike on the enemy through the integration of information and firepower.

[0047] Step 2: Replace the corresponding combat digital simulation sub-model with the first-level real-world module after decomposition, and conduct in-loop testing. Compare the output of the combat digital simulation model with the actual effect to verify the consistency between the combat digital simulation sub-model and the real situation. During in-loop testing of the software module, virtual reality is used to allow the tester to observe the output of the corresponding combat digital simulation sub-model. If the output matches the real situation, the combat digital simulation sub-model corresponding to the software module is considered consistent with the actual situation. For example, with portable air defense missiles, augmented reality is used so that soldiers see the effect produced by the combat digital simulation model when firing.

[0048] The following describes the implementation method in detail using a portable air defense missile as an example, specifically illustrating the process of cyclical multi-round verification. Cyclic multi-round verification is similar to a permutation and combination process. In each round of verification for a certain combat digital simulation sub-model, each component module will be replaced with the corresponding combat digital simulation sub-model in turn, and then combined with the remaining combat digital simulation sub-models for verification. This process is repeated for all component modules. After the entire verification process is completed, if it matches the real situation, then the combat digital simulation sub-model is considered to be consistent with reality.

[0049] Figure 5 This is a schematic diagram illustrating the functional breakdown and verification of a man-portable air defense missile in an embodiment of the present invention, as shown below. Figure 5 As shown, the man-portable air defense system (MANPADS) is first functionally decomposed into operational digital simulation sub-models corresponding to seeker detection, target tracking, inertial navigation missile trajectory, guided ballistic trajectory, and target destruction. Similarly, the MANPADS entity is also component-based, divided into seeker detection module, target tracking module, inertial navigation missile module, guided ballistic trajectory module, and target destruction module.

[0050] After completing the functional and component-level decomposition, each real module is replaced in turn with its corresponding combat digital simulation sub-model according to different test function points, and then integrated into the entire combat digital simulation model for verification one by one. For example, when testing the seeker detection function, the real seeker detection module is connected, while the target tracking, inertial navigation trajectory, guidance trajectory, and target destruction functions are the corresponding combat digital simulation sub-models.

[0051] When performing consistency verification of the seeker detection function, since only the seeker detection is real and there is no target scene, it is necessary to apply augmented reality (AR) at this time. The real launch tube seeker display is used as the 3D registration object. Then, by connecting the input of the real seeker in the virtual scene and feeding back the output to the seeker and AR device, the AR device displays the scene image, so that the operator can see the image that should be displayed on the seeker display through the AR device.

[0052] When verifying the functional consistency of target tracking, the actual target tracking module from a man-portable air defense system (MANPADS) can be integrated into a combat digital simulation model. Testers can conduct tests in a virtual environment using virtual reality (VR). Through VR devices, they can observe and measure targets in the virtual environment, then perform target template matching, locking, and tracking to complete the entire launch process, followed by data comparison. During the target template matching, locking, and tracking phase, the information detected in the virtual environment is transmitted to the target tracking module. The data calculated by the actual module is then returned to the virtual environment, and tracking is performed based on this data, completing the in-loop test of the target tracking function.

[0053] The in-loop testing of the three functions—inertial ballistic trajectory, guided ballistic trajectory, and target destruction—is conducted sequentially. After this process is repeated to verify the consistency of each combat digital simulation sub-model in the in-loop, an overall statistical analysis is performed to complete the functional consistency verification of the combat digital simulation sub-model for man-portable air defense.

[0054] Step 3 involves replacing the corresponding combat digital simulation sub-models with real modules for in-loop testing. For example, the digital combat simulation sub-model corresponding to the electronic information function is tested using mixed reality techniques. This allows testers to compare the observed results with the actual situation, verifying the consistency of the digital combat simulation sub-model corresponding to the electronic information function. In-loop testing of each digital combat simulation sub-model is used to verify whether the multi-source information flow operates normally in the combat digital simulation model as in reality.

[0055] Taking the individual soldier's electronic information module as an example, a detailed description of the implementation method is provided.

[0056] First, the corresponding combat digital simulation sub-model is replaced with the real individual soldier's electronic information module, and the input and output of the real individual soldier's electronic information module are connected to the entire combat digital simulation sub-model to form a closed-loop test scenario.

[0057] Next, by receiving the information input to the individual soldier's electronic information module in the closed-loop test scenario, the individual soldier's electronic information module should present the content fed back by its own individual soldier's sensors, as well as the command information and battlefield situation issued by the superior command post. The individual soldier's electronic information module will feed back the multi-source fusion information it has collected to the superior command post, including situational fusion of its own GPS information, multi-functional monocular, and individual soldier radar information.

[0058] Finally, the results of the in-loop test were verified through extended reality, observing whether the information sent in the closed-loop test scenario was consistent with the electronic information displayed in reality by the individual soldier, and whether the fused information was consistent with the real information.

[0059] In this way, all combinations are traversed to complete the entire verification process.

[0060] To further illustrate the concept of this invention, the traversal process is explained below. For example, a certain combat digital simulation model has five minimum combat digital simulation sub-models, namely A, B, C, D, and E. Its complete physical subsystem is divided into five real blocks at the component level, namely A1, B1, C1, D1, and E1. When verifying combat digital simulation sub-model A, A1 is replaced with A, and combat digital simulation sub-model A is verified once. B1 is replaced with B, and combat digital simulation sub-model A is verified again. C1 is replaced with C, and combat digital simulation sub-model A is verified again. D1 is replaced with D, and combat digital simulation sub-model A is verified again. E1 is replaced with E, and combat digital simulation sub-model A is verified again. Similarly, when verifying combat digital simulation sub-model B, it is also verified five times, and so on, for a total of 25 verifications. If all verifications are consistent, then the combat digital simulation model is considered to be consistent with the real situation.

[0061] In this invention, to address the issue of functional consistency verification of a digital simulation model for individual soldier multi-source information fusion combat, the digital simulation model is divided into two hierarchical architectures: a component layer and a functional layer. The consistency verification of components and functional points of the digital simulation model are verified and evaluated respectively, ensuring the completeness of the functional consistency verification of the digital model.

[0062] In this invention, during the verification of the functional consistency of the digital simulation model for multi-source information fusion combat, in order to address the problems of difficulty in virtual-real fusion interaction and inconsistent interactive display effects, a mixed reality testing method composed of virtual reality and mixed reality is adopted. This method transmits the output of the digital simulation model to the test subject with a realistic feeling effect, and improves the interactivity between the test subject and the digital simulation model through multimodal fusion interaction, which facilitates better verification and evaluation.

[0063] In this invention, to address the problem of spatial separation between the virtual model and the real equipment in the functional consistency verification of the digital simulation model for multi-source information fusion combat, a concept of equipment-in-the-loop testing is adopted. Based on the component layer and functional layer architecture, in-the-loop testing is carried out layer by layer and module by module. By integrating real equipment components into the virtual equipment system as replacements, functional consistency is verified.

[0064] In this invention, during the functional consistency verification of the digital simulation model for combat using multi-source information fusion for individual soldiers, the virtual and real scene information involved includes equipment data, environmental data, and behavioral data of the test subjects. A three-level scene construction method of function-logic-specific is adopted to establish a highly immersive virtual and real fusion scene with cognitive and scalable capabilities, which can meet the requirements for multi-source information fusion processing in the scene.

[0065] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements 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 combat digital simulation model-in-the-loop testing system based on multi-source information fusion, characterized in that, It consists of a physical subsystem and a combat digital simulation model. The physical subsystem includes complete physical devices and physical sensors. The physical sensors are installed at designated locations on the physical devices to collect corresponding parameters. The combat digital simulation model includes virtual sensors and virtual simulation scenarios. The virtual sensors are installed at corresponding virtual simulation scenarios to collect parameters within those scenarios. It is used to verify combat digital simulation models. In practice, during in-the-loop testing, a scenario of the in-the-loop testing system is first built. Then, the multi-dimensional data of equipment data, environmental data, and behavioral data existing in the scenario of the in-the-loop testing system are fused to support the verification of the combat digital simulation model. During verification, the physical subsystem is broken down into real modules, and the corresponding combat digital simulation model is broken down into multiple combat digital simulation sub-models. The real modules are used to replace the corresponding combat digital simulation sub-models, and the testing is completed after verifying all the combat digital simulation sub-models. Specifically, the test system is run in the loop, and its status is observed to ensure it is functioning correctly. During the test, a mixed reality interactive method consisting of augmented reality and virtual reality is applied to the test. Through augmented reality and virtual reality methods, the tester observes the output of the corresponding combat digital simulation sub-model. If the output is consistent with the real situation, then the combat digital simulation sub-model is considered to be consistent with the actual situation.

2. The combat digital simulation model-in-the-loop testing system based on multi-source information fusion as described in claim 1, characterized in that, When validating the combat digital simulation model, the entire in-loop test system is split into two levels: components and functions. The component-level split is for the complete physical subsystem, which is broken down into multiple smallest real blocks. The function-level split is for the combat digital simulation model, which is broken down into combat digital simulation sub-models corresponding to multiple smallest real blocks. Each combat digital simulation sub-model corresponds to one real block.

3. The combat digital simulation model-in-the-loop testing system based on multi-source information fusion as described in claim 2, characterized in that, After obtaining multiple combat digital simulation sub-models, each real module replaces the corresponding combat digital simulation sub-model and is then connected to the entire in-loop test system for testing to verify the consistency between the corresponding combat digital simulation sub-model and the corresponding real module. If each combat digital simulation sub-model has good consistency with the real modules, then the entire combat digital simulation sub-model has good consistency with the real situation.

4. The combat digital simulation model-in-the-loop testing system based on multi-source information fusion as described in claim 3, characterized in that, The input and output interfaces of the tested combat digital simulation sub-model are consistent with those of the real module. It runs in the loop test system. When the inputs are the same, the system detects whether there is a difference between the output of the tested combat digital simulation sub-model and the output of the real module. If there is no difference, it indicates that the tested combat simulation sub-model is consistent with the real situation.

5. A test method for a combat digital simulation model-in-the-loop test system based on multi-source information fusion as described in any one of claims 1-4, characterized in that, It includes the following steps: Step 1: Decompose the entire in-the-loop test system into two levels: components and functions. This involves breaking down the in-the-loop test system into the smallest real-world components and the smallest functional modules. The smallest functional module corresponds to the combat digital simulation sub-model. Step 2: Based on the minimum functional modules, connect the inputs and outputs of the corresponding real blocks of each digital simulation sub-model to the functional-level combat digital simulation sub-model. In-loop testing is then implemented by using real blocks to replace the combat digital simulation sub-model. In-the-loop testing (IoL) begins by building IoL test system scenarios. These scenarios include functional scenarios, logical scenarios, and specific scenarios. The IoL test system scenarios integrate and process equipment data, behavioral data, and environmental data. Utilizing a scenario construction approach that proceeds from functional framework to logical layout and then to specific construction, the system can fuse diverse data from equipment, environment, and behavior within the IoL test system scenarios, supporting the verification of combat digital simulation models. Step 3: Perform in-loop testing on each combat digital simulation sub-model to verify functional consistency. If all combat digital simulation sub-models are consistent with the actual situation, the entire combat digital simulation model is considered consistent with the actual situation; otherwise, it is considered inconsistent.

6. The method as described in claim 5, characterized in that, In step one, a minimum functional module corresponds to a minimum combat digital simulation sub-model, and a minimum combat digital simulation sub-model corresponds to a real module.

7. The method as described in claim 6, characterized in that, In step two, according to the division of the smallest functional modules, the inputs and outputs of the real blocks corresponding to each smallest functional module are connected into the combat digital simulation model. By using each real block to replace the corresponding combat digital simulation sub-model, traversal testing is achieved. The system runs in the loop test system, and the status of the loop test system is observed. If it is normal, it means that the corresponding combat digital simulation sub-model is consistent with the actual situation; otherwise, it is inconsistent.

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