CN112685913A - Infrared decoy bullet efficiency simulation method and system based on Unity - Google Patents
Infrared decoy bullet efficiency simulation method and system based on Unity Download PDFInfo
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Abstract
The invention provides an infrared decoy bullet efficacy simulation method and system based on Unity, and relates to the technical field of computer simulation, wherein the method comprises the following steps: step 1: designing and generating a physical model of the bait bomb according to the characteristics of the actual bait bomb; step 2: generating a bait projectile simulation model and a particle effect through the particle system component according to the bait projectile physical model; and step 3: generating a three-dimensional live-action terrain model according to the satellite picture and the terrain data; and 4, step 4: establishing a three-dimensional simulation model according to the overall dimensions of simulation objects such as airplanes and missiles; and 5: rendering the bait bullet particle effect and the three-dimensional simulation model into an infrared simulation image; step 6: and transmitting the infrared simulation image to a simulation algorithm module, and updating the simulation state according to the simulation algorithm operation result. The method can solve the problem of modeling of the bait bomb object in infrared image simulation, and realizes the control of the throwing strategy and throwing time in infrared bait bomb simulation.
Description
Technical Field
The invention relates to the technical field of computer simulation, in particular to an infrared decoy bullet efficiency simulation method and system based on Unity.
Background
The Unity is a real-time 3D interactive content creation and operation platform, provides a complete set of complete software solution, can be used for creating, operating and rendering any real-time interactive 2D and 3D content, and supports platforms including mobile phones, tablet computers, PCs, game hosts, augmented reality and virtual reality equipment.
The chinese patent publication No. CN109446553A discloses an aerial dynamic infrared scene simulation system based on Unity3D, which includes: the system comprises an infrared characteristic simulation system, an atmospheric attenuation simulation system, a sky environment simulation system and a detector receiving imaging system; the sky environment simulation system comprises a sky module, a cloud module and a time module; the detector receiving imaging system comprises a radiation intensity conversion module, a noise processing module and a comprehensive imaging module; the simulation system implementation method comprises the following steps: 1. creating a three-dimensional model and calculating infrared radiation characteristics; 2. creating an atmospheric transmittance database; 3. creating a dynamic sky environment; 4. and the simulation detector receiving unit and the simulation system are visualized. The infrared characteristics of the missile flying at high speed are accurately calculated, a new generation of graphic engine Unity3D is combined, a complex sky model is fused, an infrared video generated by simulation is closer to real shooting, and a large number of test videos are generated for subsequent infrared target detection and tracking.
Aiming at the technical method in the prior art, the aerial infrared simulation picture can be generated with higher accuracy, but the method lacks the modeling and simulation of the most main anti-infrared guidance equipment, namely the infrared bait projectile, and the system lacks the realization of simulation instructions such as missile guidance control launching, bait projectile launching and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an infrared bait bomb efficacy simulation method and system based on Unity, which can solve the problem of modeling of a bait bomb object in infrared image simulation and realize control of a throwing strategy and throwing time in infrared bait bomb simulation.
According to the infrared decoy bullet efficiency simulation method and system based on Unity provided by the invention, the scheme is as follows:
in a first aspect, a Unity-based infrared decoy projectile performance simulation method is provided, and the method includes:
designing and generating a physical model of the bait bomb according to the characteristics of the actual bait bomb;
generating a bait projectile simulation model and a particle effect through the particle system component according to the bait projectile physical model;
generating a three-dimensional live-action terrain model according to the satellite picture and the terrain data;
establishing a three-dimensional simulation model according to the overall dimensions of simulation objects such as airplanes and missiles;
rendering the bait bullet particle effect and the three-dimensional simulation model into an infrared simulation image;
and transmitting the infrared simulation image to a simulation algorithm module, and updating the simulation state according to the simulation algorithm operation result.
Preferably, the designing and generating a physical model of the bait bullet according to the actual bait bullet characteristics comprises:
establishing a bait bullet characteristic database by collecting data such as typical bait bullet types, bullet body structures, working parameters and the like;
establishing a motion model of the bait projectile according to data such as the weight, the geometric shape, the atmospheric wind resistance, the throwing speed and the like of the body of the infrared bait projectile;
and establishing a combustion model of the bait cartridge according to the data such as the loading quantity, the combustion temperature, the rise time and the like of the infrared bait cartridge.
Preferably, the generating the bait bullet simulation model and the particle effect comprises:
creating an infrared bait bullet object in the Unity, adding a particle system component, modifying the attributes of the particle system component such as duration, speed and brightness curve, and simulating the expression effect of the bait bullet;
according to the difference between the point source infrared bait bomb and the surface source infrared bait bomb, adding components such as tail smoke, head particles, diffusion particles and the like into a bait bomb model respectively, and storing the components as an infrared bait bomb prefabricated body;
creating an empty object at the tail part of the airplane model, and properly adjusting the position and the launching angle to be used as an infrared decoy bullet prefabricated body mounting point of the airplane object;
and creating an infrared bait projectile throwing control script of C # language on the airplane model, wherein the script realizes the functions of dynamically modifying the type, combustion temperature and mounting point of an infrared bait projectile preform, controlling bait projectile throwing time and throwing strategy and the like.
Preferably, the generating the three-dimensional live-action terrain model comprises:
acquiring corresponding altitude elevation data and satellite map data according to the selected simulated area;
the elevation data are processed through Global Mapper software to generate an elevation file in a Raw format;
generating a terrain map file from the satellite map picture in an image splicing mode;
and (3) newly building a terrain type object in the Unity engine, and applying the altitude elevation and the terrain map to the height attribute and the material attribute of the terrain object to generate a three-dimensional live-action terrain model.
Preferably, the establishing of the three-dimensional simulation model includes:
establishing an equal-proportion model of a simulation object in modeling software such as 3DMAX (data access control) X (model access control), generating a model file in an Obj format, and importing the model file into a Unity engine to generate a three-dimensional simulation object model;
and adding surface infrared materials for the simulation model, and storing the simulation model as a corresponding prefabricated body.
Preferably, the rendering the bait bullet effect and the three-dimensional simulation model into the infrared simulation image includes:
an infrared guide head is newly built at a proper position of a missile simulation object, a camera component is added to the guide head, the attribute of the camera component is adjusted to simulate the imaging position and the visual angle of the missile guide head, and an infrared guide head model is realized;
creating a C # language temperature field calculation script on the airplane model, and calculating the surface temperature distribution of the airplane according to factors such as model stagnation point skin temperature, model flying speed, flying height and the like;
creating an infrared image rendering script of a Shader language, calculating the infrared emergent intensity of the airplane according to the surface temperature of the model, and calculating the incident radiation intensity of the missile infrared seeker according to the atmospheric attenuation coefficient to generate an infrared simulation image;
and creating an infrared simulation image post-processing script of a Shader language, setting an atmospheric background temperature value and noise intensity, and generating a noise effect of the infrared image according to the set value.
Preferably, the updating the simulation state includes:
creating a simulation control script of C # language, processing simulation data transmission and motion updating of a simulation target, and realizing a simulation control module;
the simulation control module is connected with the simulation operation module through a TCP/UDP protocol and sends the infrared simulation image data;
the simulation operation module analyzes the infrared simulation image, calculates the motion control quantity in the missile guidance process, calculates the motion control quantity of the airplane along the track and the evasion strategy control quantity according to the missile motion, and issues missile launching and bait missile throwing control instructions;
and the simulation control module updates the motion state of the simulation object according to the motion control quantity and the control instruction of the simulation target.
In a second aspect, there is provided a Unity-based infrared decoy projectile performance simulation system, the system comprising:
module M1: designing and generating a physical model of the bait bomb according to the characteristics of the actual bait bomb;
module M2: generating a bait projectile simulation model and a particle effect through the particle system component according to the bait projectile physical model;
module M3: generating a three-dimensional live-action terrain model according to the satellite picture and the terrain data;
module M4: establishing a three-dimensional simulation model according to the overall dimensions of simulation objects such as airplanes and missiles;
module M5: rendering the bait bullet particle effect and the three-dimensional simulation model into an infrared simulation image;
module M6: and transmitting the infrared simulation image to a simulation algorithm module, and updating the simulation state according to the simulation algorithm operation result.
Preferably, the module M1 includes:
establishing a bait bullet characteristic database by collecting data such as typical bait bullet types, bullet body structures, working parameters and the like;
establishing a motion model of the bait projectile according to data such as the weight, the geometric shape, the atmospheric wind resistance, the throwing speed and the like of the body of the infrared bait projectile;
and establishing a combustion model of the bait cartridge according to the data such as the loading quantity, the combustion temperature, the rise time and the like of the infrared bait cartridge.
Preferably, the module M2 includes:
creating an infrared bait bullet object in the Unity, adding a particle system component, modifying the attributes of the particle system component such as duration, speed and brightness curve, and simulating the expression effect of the bait bullet;
according to the difference between the point source infrared bait bomb and the surface source infrared bait bomb, adding components such as tail smoke, head particles, diffusion particles and the like into a bait bomb model respectively, and storing the components as an infrared bait bomb prefabricated body;
creating an empty object at the tail part of the airplane model, and properly adjusting the position and the launching angle to be used as an infrared decoy bullet prefabricated body mounting point of the airplane object;
and creating an infrared bait projectile throwing control script of C # language on the airplane model, wherein the script realizes the functions of dynamically modifying the type, combustion temperature and mounting point of an infrared bait projectile preform, controlling bait projectile throwing time and throwing strategy and the like.
Compared with the prior art, the invention has the following beneficial effects:
1. by collecting bait bomb data, a bait bomb motion model and a combustion model are respectively constructed, and the problem of modeling of a bait bomb object in infrared image simulation is solved in a mode that a Unity particle system component constructs a particle effect;
2. by means of the mode that the aircraft simulation object carries the infrared bait bomb throwing control script, throwing strategies and throwing time control in infrared bait bomb simulation are achieved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is an overall flow chart of the present invention;
FIG. 2 is a bait cartridge object data flow diagram;
fig. 3 is a system block diagram.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The embodiment of the invention provides an infrared bait bullet effectiveness simulation method based on Unity, which is shown in a figure 1 and a figure 2, and comprises the following steps of firstly, designing and generating a physical model of a bait bullet according to the characteristics of an actual bait bullet: the method comprises the steps of establishing a bait bullet characteristic database by collecting data such as typical bait bullet types, bullet body structures and working parameters, establishing a motion model of the bait bullet according to data such as the weight, the geometric shape, the atmospheric wind resistance and the throwing speed of an infrared bait bullet, and finally establishing a combustion model of the bait bullet according to data such as the loading amount, the combustion temperature and the rising time of the infrared bait bullet.
Referring to fig. 2 and 3, a bait cartridge simulation model and a pellet effect are generated by the pellet system component according to the bait cartridge physics model. An infrared bait bullet object is created in the Unity, particle system components are added, the properties of duration, speed, brightness curves and the like of the particle system components are modified, and the performance effect of the bait bullet is simulated. According to the difference between the point source infrared bait bomb and the surface source infrared bait bomb, components such as tail smoke, head particles, diffusion particles and the like are added to the bait bomb model respectively, and the components are stored as infrared bait bomb prefabricated bodies. And finally, an infrared bait projectile launching control script in a C # language is created on the airplane model, and the script realizes the functions of dynamically modifying the type, the combustion temperature and the mounting point of the infrared bait projectile preform, controlling the bait projectile launching time, the launching strategy and the like.
Generating a three-dimensional live-action terrain model according to the satellite picture and the terrain data: the method comprises the steps of firstly, acquiring corresponding altitude elevation data and satellite map data according to a selected simulated area, processing the altitude elevation data through Global Mapper software to generate an altitude elevation file in a Raw format, then generating a terrain map file from a satellite map picture in an image splicing mode, finally newly building a terrain type object in a Unity engine, and applying the altitude elevation and the terrain map to the height attribute and the material attribute of the terrain object to generate a three-dimensional live-action terrain model.
Establishing a three-dimensional simulation model according to the overall dimensions of simulation objects such as airplanes, missiles and the like: an equal-proportion model of a simulation object is established in modeling software such as 3DMAX, an Obj-format model file is generated, a Unity engine is imported to generate a three-dimensional simulation object model, the simulation object in the implementation comprises an airplane, a missile van and the like, surface infrared materials are added to the simulation model, and the simulation model is stored as a corresponding prefabricated body.
Rendering the bait bullet particle effect and the three-dimensional simulation model into an infrared simulation image: an infrared guide head is newly built at a proper position of a missile simulation object, a camera assembly is added to the guide head, the attribute of the camera assembly is adjusted to simulate the imaging position and the visual angle of the missile guide head, and an infrared guide head model is realized. A C # language temperature field calculation script is created on an airplane model, airplane surface temperature distribution is calculated according to factors such as model stagnation point skin temperature, model flying speed and flying height, then a Shader language infrared image rendering script is created, airplane infrared emergent intensity is calculated according to the model surface temperature, missile infrared seeker incident radiation intensity is calculated according to the atmospheric attenuation coefficient, and an infrared simulation image is generated. And finally, creating an infrared simulation image post-processing script of the Shader language, setting an atmospheric background temperature value and noise intensity, and generating the noise effect of the infrared image according to the set value.
And transmitting the infrared simulation image to a simulation algorithm module, and updating the simulation state according to the simulation algorithm operation result. Creating a simulation control script of C # language, processing simulation data transmission and motion updating of a simulation target, realizing a simulation control module, establishing connection between the simulation control module and a simulation operation module through a TCP/UDP protocol, and sending infrared simulation image data; and the simulation operation module analyzes the infrared simulation image, calculates the motion control quantity of the guided missile guidance process, calculates the control quantity of the aircraft along the track motion and the control quantity of the evasion strategy according to the guided missile motion, and sends out guided missile launching and bait projectile launching control instructions, wherein the control quantity and the control instructions are sent to the simulation control module through a TCP/UDP protocol. And finally, the simulation control module updates the motion state of the simulation object according to the motion control quantity and the control instruction of the simulation target.
The embodiment of the invention provides an infrared bait bullet effectiveness simulation method based on Unity, which is characterized in that a bait bullet motion model and a combustion model are respectively constructed by collecting bait bullet data, and a particle effect is constructed by a Unity particle system component, so that the problem of modeling of a bait bullet object in infrared image simulation is solved; by means of the mode that the aircraft simulation object carries the infrared bait bomb throwing control script, throwing strategies and throwing time control in infrared bait bomb simulation are achieved.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, units provided by the present invention as pure computer readable program code, the system and its various devices, modules, units provided by the present invention can be fully implemented by logically programming method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A Unity-based infrared decoy projectile performance simulation method is characterized by comprising the following steps:
step 1: designing and generating a physical model of the bait bomb according to the characteristics of the actual bait bomb;
step 2: generating a bait projectile simulation model and a particle effect through the particle system component according to the bait projectile physical model;
and step 3: generating a three-dimensional live-action terrain model according to the satellite picture and the terrain data;
and 4, step 4: establishing a three-dimensional simulation model according to the overall dimensions of simulation objects such as airplanes and missiles;
and 5: rendering the bait bullet particle effect and the three-dimensional simulation model into an infrared simulation image;
step 6: and transmitting the infrared simulation image to a simulation algorithm module, and updating the simulation state according to the simulation algorithm operation result.
2. The method of claim 1, wherein step 1 comprises:
step 1-1: establishing a bait bullet characteristic database by collecting data such as typical bait bullet types, bullet body structures, working parameters and the like;
step 1-2: establishing a motion model of the bait projectile according to data such as the weight, the geometric shape, the atmospheric wind resistance, the throwing speed and the like of the body of the infrared bait projectile;
step 1-3: and establishing a combustion model of the bait cartridge according to the data such as the loading quantity, the combustion temperature, the rise time and the like of the infrared bait cartridge.
3. The method of claim 1, wherein the step 2 comprises:
step 2-1: creating an infrared bait bullet object in the Unity, adding a particle system component, modifying the attributes of the particle system component such as duration, speed and brightness curve, and simulating the expression effect of the bait bullet;
step 2-2: according to the difference between the point source infrared bait bomb and the surface source infrared bait bomb, adding components such as tail smoke, head particles, diffusion particles and the like into a bait bomb model respectively, and storing the components as an infrared bait bomb prefabricated body;
step 2-3: creating an empty object at the tail part of the airplane model, and properly adjusting the position and the launching angle to be used as an infrared decoy bullet prefabricated body mounting point of the airplane object;
step 2-4: and creating an infrared bait projectile throwing control script of C # language on the airplane model, wherein the script realizes the functions of dynamically modifying the type, combustion temperature and mounting point of an infrared bait projectile preform, controlling bait projectile throwing time and throwing strategy and the like.
4. The method of claim 1, wherein step 3 comprises:
step 3-1: acquiring corresponding altitude elevation data and satellite map data according to the selected simulated area;
step 3-2: the elevation data are processed through Global Mapper software to generate an elevation file in a Raw format;
step 3-3: generating a terrain map file from the satellite map picture in an image splicing mode;
step 3-4: and (3) newly building a terrain type object in the Unity engine, and applying the altitude elevation and the terrain map to the height attribute and the material attribute of the terrain object to generate a three-dimensional live-action terrain model.
5. The method of claim 1, wherein the step 4 comprises:
step 4-1: establishing an equal-proportion model of a simulation object in modeling software such as 3DMAX (data access control) X (model access control), generating a model file in an Obj format, and importing the model file into a Unity engine to generate a three-dimensional simulation object model;
step 4-2: and adding surface infrared materials for the simulation model, and storing the simulation model as a corresponding prefabricated body.
6. The method of claim 1, wherein the step 5 comprises:
step 5-1: an infrared guide head is newly built at a proper position of a missile simulation object, a camera component is added to the guide head, the attribute of the camera component is adjusted to simulate the imaging position and the visual angle of the missile guide head, and an infrared guide head model is realized;
step 5-2: creating a C # language temperature field calculation script on the airplane model, and calculating the surface temperature distribution of the airplane according to factors such as model stagnation point skin temperature, model flying speed, flying height and the like;
step 5-3: creating an infrared image rendering script of a Shader language, calculating the infrared emergent intensity of the airplane according to the surface temperature of the model, and calculating the incident radiation intensity of the missile infrared seeker according to the atmospheric attenuation coefficient to generate an infrared simulation image;
step 5-4: and creating an infrared simulation image post-processing script of a Shader language, setting an atmospheric background temperature value and noise intensity, and generating a noise effect of the infrared image according to the set value.
7. The method of claim 1, wherein the step 6 comprises:
step 6-1: creating a simulation control script of C # language, processing simulation data transmission and motion updating of a simulation target, and realizing a simulation control module;
step 6-2: the simulation control module is connected with the simulation operation module through a TCP/UDP protocol and sends the infrared simulation image data;
step 6-3: the simulation operation module analyzes the infrared simulation image, calculates the motion control quantity in the missile guidance process, calculates the motion control quantity of the airplane along the track and the evasion strategy control quantity according to the missile motion, and issues missile launching and bait missile throwing control instructions;
step 6-4: and the simulation control module updates the motion state of the simulation object according to the motion control quantity and the control instruction of the simulation target.
8. A Unity-based infrared decoy projectile performance simulation system, the system comprising:
module M1: designing and generating a physical model of the bait bomb according to the characteristics of the actual bait bomb;
module M2: generating a bait projectile simulation model and a particle effect through the particle system component according to the bait projectile physical model;
module M3: generating a three-dimensional live-action terrain model according to the satellite picture and the terrain data;
module M4: establishing a three-dimensional simulation model according to the overall dimensions of simulation objects such as airplanes and missiles;
module M5: rendering the bait bullet particle effect and the three-dimensional simulation model into an infrared simulation image;
module M6: and transmitting the infrared simulation image to a simulation algorithm module, and updating the simulation state according to the simulation algorithm operation result.
9. The system according to claim 8, characterized in that said module M1 comprises:
establishing a bait bullet characteristic database by collecting data such as typical bait bullet types, bullet body structures, working parameters and the like;
establishing a motion model of the bait projectile according to data such as the weight, the geometric shape, the atmospheric wind resistance, the throwing speed and the like of the body of the infrared bait projectile;
and establishing a combustion model of the bait cartridge according to the data such as the loading quantity, the combustion temperature, the rise time and the like of the infrared bait cartridge.
10. The system according to claim 8, characterized in that said module M2 comprises:
creating an infrared bait bullet object in the Unity, adding a particle system component, modifying the attributes of the particle system component such as duration, speed and brightness curve, and simulating the expression effect of the bait bullet;
according to the difference between the point source infrared bait bomb and the surface source infrared bait bomb, adding components such as tail smoke, head particles, diffusion particles and the like into a bait bomb model respectively, and storing the components as an infrared bait bomb prefabricated body;
creating an empty object at the tail part of the airplane model, and properly adjusting the position and the launching angle to be used as an infrared decoy bullet prefabricated body mounting point of the airplane object;
and creating an infrared bait projectile throwing control script of C # language on the airplane model, wherein the script realizes the functions of dynamically modifying the type, combustion temperature and mounting point of an infrared bait projectile preform, controlling bait projectile throwing time and throwing strategy and the like.
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