Aircraft semi-physical simulation system based on real-time injection target simulation infrared digital image
By using a target simulation infrared digital image real-time generation device and an information real-time injection device, the high cost and data acquisition problems of the infrared image-guided aircraft hardware simulation system were solved, achieving a low-cost and highly realistic simulation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING ZHENHUA LEADING TECH CO LTD
- Filing Date
- 2024-11-06
- Publication Date
- 2026-05-08
AI Technical Summary
Existing hardware-in-the-loop simulation systems for infrared image-guided aircraft are expensive, have difficulty obtaining real thermal characteristic data of foreign target aircraft, and require multi-axis turntables, resulting in high construction costs.
A target simulation infrared digital image real-time generation device and an information real-time injection device are used to generate and convert simulated infrared digital image information. This information is then combined with the seeker head and the aircraft hardware-in-the-loop simulation subsystem to achieve simulation without a dedicated infrared target simulator.
It reduced the construction cost of the simulation system, improved the simulation fidelity, realized semi-physical simulation without a dedicated infrared target simulator, and laid the foundation for multi-missile collaborative simulation technology.
Smart Images
Figure CN121995786A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of aircraft design and manufacturing technology, and in particular to a hardware-in-the-loop simulation system for aircraft based on real-time injection of simulated infrared digital images of targets. Background Technology
[0002] In the process of hardware-in-the-loop simulation of infrared image-guided aircraft, it is necessary to obtain thermal image information of the target at different distances and altitudes. The traditional method is to use an infrared target simulator, but there are three shortcomings. First, infrared target simulators are relatively expensive, with a mid-level purchase price of around 3 million yuan. Second, a real thermal feature model of the target is required. For air defense aircraft and air-to-air aircraft, such data on foreign target aircraft are closely guarded secrets by various countries and are difficult to obtain, making it difficult to guarantee the realism of the hardware-in-the-loop simulation test. Third, when using an infrared target simulator, the flight simulation turntable of the hardware-in-the-loop simulation system requires 5 motion axes, which significantly increases the construction cost of the simulation environment. Summary of the Invention
[0003] This invention provides a hardware-in-the-loop simulation system for aircraft based on real-time injection of simulated infrared digital images of targets, in order to solve the technical problem of how to perform hardware-in-the-loop simulation of infrared image-guided aircraft in the absence of an infrared target simulator.
[0004] This invention provides a hardware-in-the-loop simulation system for aircraft based on real-time injected simulated infrared digital images of targets, comprising:
[0005] A real-time target analog infrared digital image generation device is used to generate and output analog infrared digital image information containing the target and environment according to the configured target and environment detection requirements.
[0006] The target information real-time injection device is used to receive the analog infrared digital image information containing the target and the environment, convert the analog infrared digital image information containing the target and the environment into digital serial code information containing the target and the environment that matches the reading rules of the seeker, and transmit the digital serial code information containing the target and the environment to the seeker in real time through the communication interface.
[0007] The seeker head is used to input the digital serial information containing the target and environment into the aircraft hardware-in-the-loop simulation subsystem;
[0008] The aircraft hardware-in-the-loop simulation subsystem is used to conduct aircraft hardware-in-the-loop simulation tests without a dedicated infrared target simulator by utilizing the digital serial code information containing the target and environment.
[0009] Preferably, the target information real-time injection device is specifically used to convert the analog infrared digital image information containing the target and the environment using the same reading rules as the seeker detector reading circuit in the seeker head, to obtain digital serial code information containing the target and the environment.
[0010] Preferably, the aircraft hardware-in-the-loop simulation subsystem includes an aircraft control cabin, a three-axis flight simulation turntable, a simulation control computer, and servo motors;
[0011] The seeker head and the aircraft control cabin are mounted in the three-axis flight simulation turntable, and the aircraft control cabin is connected to the servo motor and the simulation control computer via cables.
[0012] Preferably, the target simulated infrared digital image real-time generation device includes:
[0013] The graphics workstation is used to input the detection requirements of the configured target and environment into the target simulated infrared digital image real-time generation software loaded on it, calculate the infrared characteristics of the target in real time, and generate simulated infrared digital image information containing the target and environment according to the relative orientation relationship between the aircraft and the target; wherein, the orientation relationship includes position relationship and attitude relationship.
[0014] A dedicated external interface is used to output the analog infrared digital image information containing the target and environment generated by the graphics workstation.
[0015] Preferably, the target simulated infrared digital image real-time generation device further includes: a target surface radiation temperature distribution database, an infrared radiation characteristic atmospheric attenuation calculation module, a target and environment three-dimensional visual scene real-time generation module, an infrared characteristic real-time rendering module, a communication module, and a main control module.
[0016] Preferably, the target surface radiation temperature distribution database in the target simulated infrared digital image real-time generation device is specifically used to calculate the surface radiation temperature distribution of each target at different speeds and high speeds based on the surface material of each target and the flight speed and altitude of the target in the atmosphere, and to construct and save a target surface radiation temperature distribution database containing multiple targets and their surface radiation temperature distributions at different speeds and high speeds using the surface radiation temperature distributions of each target at different speeds and high speeds.
[0017] Preferably, the infrared radiation feature atmospheric attenuation calculation module in the target simulated infrared digital image real-time generation device is specifically used to calculate the infrared feature atmospheric attenuation value of the target based on the surface radiation temperature distribution of the target at different speeds and high speeds and the relative orientation relationship between the aircraft and the target.
[0018] Preferably, the real-time generation module for the three-dimensional visual scene of the target and environment in the target simulated infrared digital image real-time generation device is specifically used to generate a three-dimensional visual scene of the target and environment in real time based on the surface radiation temperature distribution of the target at different speeds and high speeds, the relative orientation relationship between the aircraft and the target, and the atmospheric attenuation value of the infrared characteristics of the target. Based on the three-dimensional visual scene of the target and environment, it generates continuous simulated digital thermal images of the target at different distances, and uses the continuous simulated digital thermal images of the target at different distances as simulated infrared digital image information of the target and environment.
[0019] The beneficial effects of this invention are as follows: A real-time infrared digital image generation device for simulated targets calculates the infrared characteristics of the target in real time. Based on the relative orientation between the aircraft and the target, it outputs a two-dimensional planar simulated thermal image video of the target relative to the seeker's line of sight to a real-time target information injection device via an external communication interface. The real-time target information injection device transmits the video information to the seeker's image processing board in real time via a communication interface with the seeker. The seeker and the aircraft control cabin are mounted on a 3-axis flight simulation turntable, and the control cabin is connected to servo motors and simulation control equipment placed on the ground via cables. This achieves semi-physical simulation in the absence of a dedicated infrared target simulator, while reducing the number of axes on the flight simulation turntable, significantly reducing the cost of simulation facility construction, and laying the technical foundation for multi-missile collaborative simulation. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of a hardware-in-the-loop simulation system for an aircraft based on real-time injected simulated infrared digital images of a target, provided by the present invention.
[0021] Figure 2 This is another schematic diagram of a hardware-in-the-loop simulation system for aircraft based on real-time injected simulated infrared digital images of targets provided by the present invention. Detailed Implementation
[0022] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In the following description, suffixes such as "module," "part," or "unit" used to denote elements are used only for the purpose of illustrative purposes and have no inherent meaning. Therefore, "module," "part," or "unit" may be used interchangeably.
[0023] Figure 1 This is a schematic diagram of a hardware-in-the-loop simulation system for an aircraft based on real-time injected simulated infrared digital images of the target, as provided by the present invention. Figure 1As shown, the system includes: a target simulated infrared digital image real-time generation device 101, used to generate and output simulated infrared digital image information containing the target and environment according to the configured target and environment detection requirements; a target information real-time injection device 102, used to receive the simulated infrared digital image information containing the target and environment, convert the simulated infrared digital image information containing the target and environment into digital serial code information containing the target and environment that matches the seeker's reading rules, and transmit the digital serial code information containing the target and environment to the seeker in real time through a communication interface; a seeker 103, used to input the digital serial code information containing the target and environment into the aircraft hardware-in-the-loop simulation subsystem; and an aircraft hardware-in-the-loop simulation subsystem 104, used to utilize the digital serial code information containing the target and environment to conduct aircraft hardware-in-the-loop simulation tests under conditions without a dedicated infrared target simulator.
[0024] In this embodiment of the invention, the real-time target information injection device 102 is specifically used to convert the analog infrared digital image information containing the target and environment using the same reading rules as the seeker detector reading circuit in the seeker head, to obtain digital serial code information containing the target and environment. That is, after receiving the information output by the real-time target analog infrared digital image output device, the real-time target information injection device 102 encodes the information using the same decoding rules as the seeker detector reading circuit, converting it into digital serial code information identical to that output by the seeker detector reading circuit, and transmits it to the seeker image processing board in real time through a communication interface. The real-time target information injection device 102 mainly includes an interface circuit, a deserialization and encoding circuit, and a control circuit.
[0025] The seeker image processing board has two identical information input interfaces: the seeker detector reading circuit output port and the external image information injection port.
[0026] In this embodiment of the invention, the aircraft hardware-in-the-loop simulation subsystem 104 includes an aircraft control cabin, a three-axis flight simulation turntable, a simulation control computer, and servo motors; the seeker head and the aircraft control cabin are mounted in the three-axis flight simulation turntable, and the aircraft control cabin is connected to the servo motors and the simulation control computer respectively via cables.
[0027] In this embodiment of the invention, the target simulated infrared digital image real-time generation device 101 includes: a graphics workstation, used to input the configured target and environment detection requirements into the target simulated infrared digital image real-time generation software loaded thereon, calculate the infrared characteristics of the target in real time, and generate simulated infrared digital image information containing the target and environment according to the relative orientation relationship between the aircraft and the target; wherein the orientation relationship includes positional relationship and attitude relationship; and a dedicated external interface, used to output the simulated infrared digital image information containing the target and environment generated by the graphics workstation. In other words, the target simulated infrared digital image real-time generation device includes a graphics workstation loaded with target simulated infrared digital image real-time generation software and a dedicated external interface.
[0028] In this embodiment of the invention, the target simulated infrared digital image real-time generation device 101 mainly outputs simulated infrared digital images of the target and environment (background), and also includes: a target surface radiation temperature distribution database, an infrared radiation characteristic atmospheric attenuation calculation module, a target and environment three-dimensional visual scene real-time generation module, an infrared characteristic real-time rendering module, a communication module and a main control module.
[0029] In this embodiment of the invention, the target surface radiation temperature distribution database in the target simulated infrared digital image real-time generation device 101 is specifically used to calculate the surface radiation temperature distribution of each target at different speeds and high speeds based on the surface material of each target and the flight speed and altitude of the target in the atmosphere; and to construct and save a target surface radiation temperature distribution database containing multiple targets and their surface radiation temperature distributions at different speeds and high speeds using the surface radiation temperature distributions of each target at different speeds and high speeds.
[0030] In this embodiment of the invention, the infrared radiation feature atmospheric attenuation calculation module in the target simulated infrared digital image real-time generation device 101 is specifically used to calculate the infrared feature atmospheric attenuation value of the target based on the surface radiation temperature distribution of the target at different speeds and high speeds and the relative orientation relationship between the aircraft and the target.
[0031] In this embodiment of the invention, the real-time generation module of the target and environment three-dimensional visual scene in the target simulated infrared digital image real-time generation device 101 is specifically used to generate a target and environment three-dimensional visual scene in real time based on the surface radiation temperature distribution of the target at different speeds and high speeds, the relative orientation relationship between the aircraft and the target, and the infrared characteristic atmospheric attenuation value of the target. Based on the target and environment three-dimensional visual scene, it generates continuous simulated digital thermal images of the target at different distances, and uses the continuous simulated digital thermal images of the target at different distances as simulated infrared digital image information of the target and environment.
[0032] In this embodiment of the invention, the target simulated infrared digital image generation device 101 and the target information real-time injection device 102 are used to replace the infrared target simulator in the traditional hardware-in-the-loop simulation system. Specifically, the target surface radiation temperature distribution database in the target simulated infrared digital image generation device 101, combined with the infrared feature atmospheric attenuation calculation module, works with the target and environment three-dimensional visual real-time generation module to generate continuous simulated digital thermal images of the target at different distances and heights, i.e., target simulated infrared digital images.
[0033] Furthermore, in this embodiment of the invention, based on the target surface material and its flight speed and altitude in the atmosphere, the surface radiation temperature distribution data of the target at different altitudes and speeds are obtained through flow field calculations, and a database of the surface radiation temperature distribution of the target at different altitudes and speeds is constructed based on the surface radiation temperature distribution data of each target at different altitudes and speeds.
[0034] Figure 2 This is another schematic diagram of a hardware-in-the-loop simulation system for aircraft based on real-time injection of simulated infrared digital images of targets, provided by the present invention. The system includes: a real-time target simulated infrared digital image generation device, a real-time target information injection device, an infrared seeker with a target information injection interface, an aircraft control cabin, servos, a three-axis aircraft simulation turntable, and a simulation control computer. The real-time target simulated infrared digital image generation device calculates the infrared characteristics of the target in real time and, based on the relative azimuth relationship between the aircraft and the target, outputs a two-dimensional planar simulated thermal image video of the target relative to the seeker's line of sight to the real-time target information injection device in real time via an external communication interface. The real-time target information injection device transmits the video information to the seeker's image processing board in real time via a communication interface with the seeker. The seeker and the aircraft control cabin are mounted in the three-axis aircraft simulation turntable, and the aircraft control cabin is connected to the servos and simulation control computer placed on the ground via cables. This system achieves hardware-in-the-loop simulation in the absence of a dedicated infrared target simulator, while reducing the number of axes on the flight simulation turntable, significantly reducing the construction cost of simulation facilities, and laying the technical foundation for multi-missile collaborative simulation.
[0035] Furthermore, the infrared seeker has a real-time external image information injection function.
[0036] Furthermore, this hardware-in-the-loop simulation system is applicable to most infrared image-guided aircraft with external target information injection interfaces in their seekers. The three-axis flight simulation turntable in this embodiment has three axes and three degrees of freedom, used to simulate the changes in the aircraft's attitude angles and angular velocities in space. That is, it has inner, middle, and outer axes and three degrees of freedom of rotation, capable of simulating pitch, yaw, and roll angles in aircraft attitude control. Its main function is to simulate the angular motion of the aircraft's three degrees of freedom, reproducing the aircraft's attitude angles; and the centers of the three axes of the three-axis flight simulation turntable are located on the same concentric circle.
[0037] The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but this does not limit the scope of the invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and spirit of the present invention should be within the scope of the present invention.
Claims
1. A hardware-in-the-loop simulation system for aircraft based on real-time injected simulated infrared digital images of the target, characterized in that, include: A real-time target analog infrared digital image generation device is used to generate and output analog infrared digital image information containing the target and environment according to the configured target and environment detection requirements. The target information real-time injection device is used to receive the analog infrared digital image information containing the target and the environment, convert the analog infrared digital image information containing the target and the environment into digital serial code information containing the target and the environment that matches the reading rules of the seeker, and transmit the digital serial code information containing the target and the environment to the seeker in real time through the communication interface. The seeker head is used to input the digital serial information containing the target and environment into the aircraft hardware-in-the-loop simulation subsystem; The aircraft hardware-in-the-loop simulation subsystem is used to conduct aircraft hardware-in-the-loop simulation tests without a dedicated infrared target simulator by utilizing the digital serial code information containing the target and environment.
2. The aircraft hardware-in-the-loop simulation system according to claim 1, characterized in that, The target information real-time injection device is specifically used to convert the analog infrared digital image information containing the target and the environment using the same reading rules as the seeker detector reading circuit in the seeker head, so as to obtain digital serial code information containing the target and the environment.
3. The aircraft hardware-in-the-loop simulation system according to claim 1, characterized in that, The aircraft hardware-in-the-loop simulation subsystem includes an aircraft control cabin, a three-axis flight simulation turntable, a simulation control computer, and servo motors. The seeker head and the aircraft control cabin are mounted in the three-axis flight simulation turntable, and the aircraft control cabin is connected to the servo motor and the simulation control computer via cables.
4. The aircraft hardware-in-the-loop simulation system according to claim 1, characterized in that, The target analog infrared digital image real-time generation device includes: The graphics workstation is used to input the detection requirements of the configured target and environment into the target simulated infrared digital image real-time generation software loaded on it, calculate the infrared characteristics of the target in real time, and generate simulated infrared digital image information containing the target and environment according to the relative orientation relationship between the aircraft and the target; wherein, the orientation relationship includes position relationship and attitude relationship. A dedicated external interface is used to output the analog infrared digital image information containing the target and environment generated by the graphics workstation.
5. The aircraft hardware-in-the-loop simulation system according to claim 4, characterized in that, The target simulated infrared digital image real-time generation device also includes: a target surface radiation temperature distribution database, an infrared radiation characteristic atmospheric attenuation calculation module, a target and environment three-dimensional visual scene real-time generation module, an infrared characteristic real-time rendering module, a communication module, and a main control module.
6. The aircraft hardware-in-the-loop simulation system according to claim 5, characterized in that, The target surface radiation temperature distribution database in the target simulated infrared digital image real-time generation device is specifically used to calculate the surface radiation temperature distribution of each target at different speeds and high speeds based on the surface material of each target and the flight speed and altitude of the target in the atmosphere, and to construct and save a target surface radiation temperature distribution database containing multiple targets and their surface radiation temperature distributions at different speeds and high speeds using the surface radiation temperature distributions of each target at different speeds and high speeds.
7. The aircraft hardware-in-the-loop simulation system according to claim 6, characterized in that, The infrared radiation feature atmospheric attenuation calculation module in the target simulated infrared digital image real-time generation device is specifically used to calculate the infrared feature atmospheric attenuation value of the target based on the surface radiation temperature distribution of the target at different speeds and high speeds and the relative orientation relationship between the aircraft and the target.
8. The aircraft hardware-in-the-loop simulation system according to claim 7, characterized in that, The real-time generation module for the three-dimensional visual scene of the target and environment in the target simulated infrared digital image real-time generation device is specifically used to generate a three-dimensional visual scene of the target and environment in real time based on the surface radiation temperature distribution of the target at different speeds and high speeds, the relative orientation relationship between the aircraft and the target, and the atmospheric attenuation value of the infrared characteristics of the target. Based on the three-dimensional visual scene of the target and environment, it generates continuous simulated digital thermal images of the target at different distances, and uses the continuous simulated digital thermal images of the target at different distances as simulated infrared digital image information of the target and environment.