CN103593514A - Multi-spectral-coverage synthetic environment simulation system - Google Patents
Multi-spectral-coverage synthetic environment simulation system Download PDFInfo
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Abstract
A multi-spectral-coverage synthetic environment simulation system comprises a synthetic environment modeling and calculating unit, a synthetic environment data Sedris standardization unit and a synthetic environment rendering and visualization unit. The defects in the prior art are overcome, and the problems that in a simulation test, the complex and true environment is difficult to simulate, and meanwhile accurate and effective environment support data are insufficient, so that influences on the test by environmental factors are not sufficiently embodied are solved. modeling, SEDRIS standardization and visualization of the synthetic environment of atmosphere, infrared, electromagnetism and others are achieved, standardized synthetic environment data are provided for simulation application, and support is provided for operational effectiveness evaluation of a weapon system.
Description
Technical field
The present invention relates to a kind of synthetic environment that atmosphere, infrared and electromagnetism are formed and carry out modeling, data normalization and the visual system of playing up, belong to virtual experiment technology field.
Background technology
Synthetic environment can produce material impact to the performance of armament systems, but because lacking accurate, effective environmental data as support in virtual test process, and fail the better solutions problem of the reusable and heterogeneous network interoperability of environmental data of determining, thereby reduced the precision of virtual test result.Multispectral section of synthetic environment analogy method emphasis solves the modeling and simulating problem of the virtual test synthetic environments such as atmosphere, infrared, electromagnetism, for virtual test provide comprehensively, accurately, continue and the synthetic environment data of standard, disclosed the intrinsic impact of environmental factor on armament systems under complicated condition of battlefield, for the Combat Efficiency Evaluation of armament systems provides support.
At present, both at home and abroad the research to the emulation of synthetic environment, Modeling Platform, mainly concentrates on the study on the synthesis to aspects such as comprehensive natural, geographical environments, and few for the study on the synthesis of the multispectral section of environment such as atmosphere, infrared, electromagnetism.If JMASE is infrared environmental modeling and emulation platform, by OO design, define a series of standard, service and model api interface, promoted reusing and the interoperability of system model of model code.Based on External rendering, under JMASE framework, set up a reusable infrared simulation model that radiation signal in infrared environmental simulation is calculated and managed, developed a three-dimensional Atmospheric models assembly.But this system cannot emulation and modeling atmosphere and electromagnetic environment, data standard transforms also just based on JMASE platform environment, can only apply this tool set, for the data layout of homology not unified standard not, cannot between heterogeneous system, issue and call.
In addition, if AGETIM is that a based on the novel 3D terrain environment of SEDRIS modeling tool, this instrument is applicable to the detection of light/ray, comprise infrared, electromagnetism and sonic spectra section is surveyed, modeling.But except comprising the three-dimensional modeling of scene and target, there is no infrared, the electromagnetic property modeling (for example the infrared characteristic modeling of flame, light and the electromagnetic property modeling of radar) of scene and target aspect modeling; Simultaneously, scene and the target multi channel imaging of (infrared imaging and SAR imaging) under sensor different-waveband, except thering is (infrared, visual and night vision pattern under different-waveband, there is no SAR imaging) multi channel imaging outside, calculating (infrared radiation of scene and target calculates, and propagation properties calculates and the RCS of the target calculates) function without the characteristic of scene and Infrared Targets, electromagnetism.And, lack the visual function of playing up of synthetic environment in whole simulation process.
Summary of the invention
The technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, developed a multispectral section of synthetic environment simulation softward system based on SEDRIS standard, solve complicated true environment in l-G simulation test and be difficult to simulation, lack accurate, effective Environmental support data simultaneously, fail to fully demonstrate the problem of environmental factor on test impact, modeling, the SEDRIS standardization and visual of the synthetic environments such as atmosphere, infrared, electromagnetism have been realized, for Simulation Application provides standardized synthetic environment data, for the Combat Efficiency Evaluation of armament systems provides support.
The technology of the present invention solution is as follows: multispectral section of synthetic environment simulation system, comprises synthetic environment Modelling and calculation unit, synthetic environment data Sedris Standardisation Cell and synthetic environment is played up and visualization;
The electromagnetic property model of infrared characteristic model, scene and the target of Atmospheric models, scene and target, infrared special efficacy model, according to treating that artificial tasks completes the modeling of atmosphere, scene and Infrared Targets and electromagnetic property, are set up in synthetic environment Modelling and calculation unit; The infrared characteristic model of the scene of setting up and target is carried out to the calculating of atmospheric heat transmission effects and scene and target heat radiation and calculate, obtain the ir radiation data under different spectral coverage; Infrared special efficacy model is carried out to scene special effect scattering and radiation characteristic calculating, obtain the infrared special efficacy data under different spectral coverage; The electromagnetic property model of the scene of setting up and target is carried out to electromagnetic propagation property calculation and the calculating of target EM reflecting characteristics, obtain electromagnetic data and Electromagnetic Characters of Target data under different spectral coverage; Read the atmosphere data under the differing heights that Atmospheric models generate, the atmosphere data under the ir radiation data under different spectral coverage and special efficacy data, electromagnetic data, Electromagnetic Characters of Target data and differing heights is referred to as to synthetic environment data and is sent to synthetic environment data Sedris Standardisation Cell;
Synthetic environment data Sedris Standardisation Cell, by receiving the multispectral section of synthetic environment data that synthetic environment Modelling and calculation unit sends, according to SEDRIS standard, is changed synthetic environmental data, deposits in Sedris synthetic environment database after converting;
Synthetic environment is played up and visualization reads the synthetic environment data of Sedris standard format under current artificial tasks from Sedris synthetic environment database, utilize Dynamic loading technique progressively synthetic environment data to be loaded in Visual Scene according to emulation progradation, and the Visual Scene after loading is played up.
Described synthetic environment Modelling and calculation unit comprises material classification submodule, infrared characteristic computing module, electromagnetic property computing module, atmosphere data generation module and particle FX Module;
The scene that material classification submodule obtains and satellite image map or Aerial Images or the target texture pinup picture of target, the image obtaining is classified according to material properties, for different classification, generate different material coded files (MCM) and material system file (.ms) as the infrared characteristic model of scene and target; According to CAD geometric model and the model of place of objective body, the region in objective body and scene with identical material is divided simultaneously; The electromagnetism material information of zones of different is gathered for the electromagnetic property model of corresponding electromagnetic property file as scene and target;
Particle FX Module arranges particle properties parameter according to emulation demand, generates infrared special efficacy model;
Atmosphere data generation module obtains the air source data in the three-dimensional referenmce atomsphere model of NRLMSISE-00, and air source data are carried out to the atmosphere data that being converted to of time and coordinate system be take under the differing heights that longitude and latitude is unit;
Infrared characteristic computing module, according to different material coded files (MCM) and material system file (.ms) and the atmosphere radiation decay factor obtained, obtains the ir radiation data under different spectral coverage; Simultaneously according to the infrared special efficacy data under infrared special efficacy model generation different spectral coverage;
Electromagnetic property computing module is according to treating simulated environment, the device location of configuration electromagnetic equipment, equipment is with frequently, plant capacity, the facility switching machine time, equipment moving trace information and scene terrain information, generate an XML configuration file, electromagnetic property file in conjunction with above-mentioned zones of different, generate the electromagnetic data under different spectral coverage, configure the device location of electromagnetic equipment simultaneously, the distance of plant capacity and equipment and target, the profile nature of the CAD 3D model of combining target, generate target property XML configuration file, and then generation target radar reflective surface area is Electromagnetic Characters of Target data.
The step that described synthetic environment data Sedris Standardisation Cell is changed synthetic environmental data is as follows:
(1), according to the expression model (DRM) in SEDRIS standard, the synthetic environment data that receive are reconfigured;
(2) utilize the reference coordinate of Spatial reference model (SRM) definition environment object, the synthetic environment data after step (1) combination are transformed under above-mentioned reference frame;
(3) ir radiation data in synthetic environment data and the attribute of special efficacy data, electromagnetic data and atmosphere data after environment for use data encoding standard (EDCS) description step (2) processing;
(4) data after step (3) processing are saved as to STF formatted file.
Described synthetic environment is played up and visualization utilizes Dynamic loading technique progressively synthetic environment data to be loaded into and in Visual Scene, to complete the visual of synthetic environment and play up according to emulation progradation, and performing step is as follows:
(1) download high-precision satellite geographic information data, according to simulation process, the data under different scenes are stored to the satellite geographic information database of synthetic environment data and download into hard disc of computer, obtain a plurality of independently packets;
(2), when emulation starts, be loaded in internal memory all packets in hard disc of computer are disposable;
(3), along with the propelling of emulation and the variation of scene, progressively the corresponding data bag in internal memory is loaded in Visual Scene.
Described playing up comprises that infrared and electromagnetism plays up two parts;
Wherein, infrared render process is as follows:
(1) determine unit gray shade scale numerical value;
(2) ir radiation data in the synthetic environment data of loading and gray shade scale numerical value are carried out to scale operation, obtain gray-scale value corresponding to different ir radiation data;
(3) according to above-mentioned gray-scale value, generate gray-scale map, complete the visual of the infrared image of scene and target and infrared special efficacy;
Electromagnetism render process is as follows:
The first step, arranges different colors for different electromagnetism intensities;
Second step according to the electromagnetic data in the synthetic environment data that load, loads corresponding color in the Visual Scene loading.
The present invention's beneficial effect compared with prior art:
(1) in unified system platform, complete that atmosphere, infrared and modeling, scene and the Infrared Targets property calculation of electromagnetic environment, infrared special efficacy calculate, electromagnetic propagation property calculation and target EM reflecting characteristics calculates, synthetic environment data Sedris standardization and synthetic environment data are played up and visual all functions, realized from environmental modeling, property calculation, data normalization and data and having played up and visual whole process;
(2) take SEDRIS as standard, realized the standardization of atmosphere data, infrared data, electromagnetic propagation performance data and target EM reflecting characteristics data, solve the problem of data reusing and isomerism, realized the using and transmitting in heterogeneous system of synthetic environment data;
(3) realized the emulation Dynamic loading technique of the atmosphere of big data quantity, infrared, electromagnetism synthetic environment data and satellite geographic information data, realized the distributed load of large data, promote the initialization speed of emulation, and improved precision and the display degree of Visual Scene.
Accompanying drawing explanation
Fig. 1 is the block diagram of system of the present invention;
Fig. 2 is material classification process figure of the present invention;
Fig. 3 is infrared characteristic calculation flow chart of the present invention;
Fig. 4 electromagnetic propagation property calculation process flow diagram;
Fig. 5 the electromagnetic characteristic of the goal is calculated process flow diagram;
Embodiment
The general frame of native system is the distributed multiple subsystem emulation platform based on HLA/RTI, as shown in Figure 1, comprises synthetic environment Modelling and calculation unit, synthetic environment data Sedris Standardisation Cell and synthetic environment is played up and visualization; The electromagnetic property model of infrared characteristic model, scene and the target of Atmospheric models, scene and target, infrared special efficacy model, according to treating that artificial tasks completes the modeling of atmosphere, scene and Infrared Targets and electromagnetic property, are set up in synthetic environment Modelling and calculation unit; The infrared characteristic model of the scene of setting up and target is carried out to the calculating of atmospheric heat transmission effects and scene and target heat radiation and calculate, obtain the ir radiation data under different spectral coverage; Infrared special efficacy model is carried out to scene special effect scattering and radiation characteristic calculating, obtain the infrared special efficacy data under different spectral coverage; The electromagnetic property model of the scene of setting up and target is carried out to electromagnetic propagation property calculation and the calculating of target EM reflecting characteristics, obtain electromagnetic data and Electromagnetic Characters of Target data under different spectral coverage; Read the atmosphere data under the differing heights that Atmospheric models generate, the atmosphere data under the ir radiation data under different spectral coverage and special efficacy data, electromagnetic data, Electromagnetic Characters of Target data and differing heights is referred to as to synthetic environment data and is sent to synthetic environment data Sedris Standardisation Cell; Synthetic environment data Sedris Standardisation Cell, by receiving the multispectral section of synthetic environment data that synthetic environment Modelling and calculation unit sends, according to SEDRIS standard, is changed synthetic environmental data, deposits in Sedris synthetic environment database after converting; Synthetic environment is played up and visualization reads the synthetic environment data of Sedris standard format under current artificial tasks from Sedris synthetic environment database, utilize Dynamic loading technique progressively synthetic environment data to be loaded in Visual Scene according to emulation progradation, and the Visual Scene after loading is played up.Being described as follows of every part:
(1) synthetic environment Modelling and calculation unit
Synthetic environment Modelling and calculation unit comprises material classification submodule, infrared characteristic computing module, electromagnetic property computing module, atmosphere data generation module and particle FX Module;
1, material classification submodule
As shown in Figure 2, material classification submodule mainly completes the foundation of infrared characteristic model and the electromagnetic property model of scene and target.The foundation of the infrared characteristic model of scene and target is specially:
(1) obtain satellite image map or Aerial Images or the target texture pinup picture of scene and target, as the input of material classification;
(2) pinup picture or the picture of input are carried out to graphical analysis, on image or pinup picture, the material (such as ocean, Bo, river, lake etc.) with same material attribute being incorporated into is a class, and with broken line, corresponding image-region is marked on image or pinup picture, by the storage of classifying of the image information of unlike material attribute object, thereby form respectively a plurality of material mask files;
(3) information of combining image mask file and infrared Materials Library, the material classification for different, generates different material coded files (MCM) and material system file (.ms) for the calculating of scene and Infrared Targets characteristic; Material coded file and material system file are referred to as the infrared characteristic model of scene and target.
Infrared Materials Library comprises the infrared material file of kind more than 200, and each material file has shown specified material shortwave absorptivity and long wave absorptivity under different temperatures, at present for commercial product can be bought.
Electromagnetic property model process of establishing is as follows:
First, CAD geometric model and the model of place of the objective body of foundation; The region in objective body and scene with identical material is divided out; For the zones of different of dividing, in conjunction with electromagnetism Materials Library, the electromagnetism material information of zones of different is gathered for corresponding electromagnetic property file to the input file calculating as follow-up electromagnetic property;
Electromagnetism Materials Library comprises more than 20 kind of electromagnetism material file, and each material file has shown the electromagnetic propertys such as the specific inductive capacity, magnetic permeability, permittivity of specified material, at present for commercial product can be bought.
2, particle FX Module
Particle FX Module arranges particle properties parameter according to emulation demand, generates infrared special efficacy model;
This step can be utilized the infrared special efficacy storehouse in JRM business software, and the api interface by infrared special efficacy storehouse arranges particle properties parameter, completes the foundation of infrared special efficacy model.
First, by the special efficacy shape of the different particles such as wake flame, blast, smog in the infrared special efficacy storehouse in JRM business software and moving law with
*.osg form stores, and forms different shape of particle file (being that blacksmoke.osg, dust shape of particle file are dust.osg etc. such as smoke particle shape file); According to the physical characteristics of actual special efficacy, particle properties parameter is set, comprise special efficacy type, particle kind, oxygen concentration, combustion rate, available fuel cumulative volume, temperature, wind speed etc., and form particle physics characterisitic parameter table, with
*.pip file is preserved (particle physics Parameter File PIP), obtains infrared special efficacy model.
3, atmosphere data generation module
Atmosphere data generation module obtains the air source data in the three-dimensional referenmce atomsphere model of NRLMSISE-00, and air source data are carried out to the atmosphere data that being converted to of time and coordinate system be take under the differing heights that longitude and latitude is unit;
(1) choose the three-dimensional referenmce atomsphere model of disclosed NRLMSISE-00, the support storehouse of calling SEDRIS standard, utilizes gtd7 (the struct nrlmsise_input in this support storehouse
*input, struct nrlmsise_flags
*flags, struct nrlmsise_output
*output) interface function directly obtains the air source data in above-mentioned three-dimensional referenmce atomsphere model;
(2) adopt time management and the mktime and the gmtime function that calculate support function in the basic Runtime Library of C/C++ language, air source data time format (using time_t type to represent) is in seconds converted to the time representation of YYYYMMDDHHMMSS form in SEDRIS (using SE_Time_Value type to represent);
(3) air source data are carried out to the atmosphere data that being converted to of time and coordinate system be take under the differing heights that longitude and latitude is unit.
In order to improve resolution, utilize the mode of linear interpolation to obtain the data that precision is higher atmosphere data in step (3), the atmosphere data of generation is exported to synthetic environment data Sedris Standardisation Cell and carry out data-switching.
4, infrared characteristic computing module
As Fig. 3, infrared characteristic computing module mainly completes infrared particle special efficacy and calculates (such as flame, tail cigarette and smog etc.) and scene and Infrared Targets property calculation.Scene and Infrared Targets property calculation utilize third party software Modtran4.0 to realize, and concrete steps are: first, utilize Modtran4.0API to set up Atmospheric models; The configuration of using ModtranGUI to set up Atmospheric models, and configuration is saved as to mcd file; Resolve mcd file in atmosphere configuration structure entity, in the ssEnvironment class in Modtran4.0API, defined relevant structure and enumeration type, thus the atmosphere radiation decay factor in corresponding mcd; Utilize ssSensor sensor structure in Modtran4.0API that the wavelength of infrared sensor is set, Altitude structure arranges the height of sensor; According to sensor parameters (ssSensor sensor structure comprises), object height, the distance of sensor and target, utilize Modtran4.0API to calculate transmitance, air path radiation, the atmospheric scattering radiation of atmosphere, obtain the ir radiation data under different spectral coverage;
Read the particle physics Parameter File PIP that particle FX Module is set up, and call the atmospheric attenuation factor by Modtran4.0API, the api interface calling in JRM carries out integration and iterative computation, calculate radiation and the scattering of special efficacy, according to above-mentioned same method, utilize ssSensor sensor and the setting of Altitude structure in Modtran4.0API, obtain the infrared special efficacy data under different spectral coverage;
Result of calculation is exported to synthetic environment data Sedris Standardisation Cell and carry out data-switching.
5, electromagnetic property computing module
Electromagnetic property computing module mainly completes electromagnetic propagation characteristic (electromagnetic data under different spectral coverage) and calculates and the electromagnetic characteristic of the goal is calculated.
As Fig. 4, the concrete steps of electromagnetic propagation property calculation are: first, complete scene and target and prefer writing of configuration file XML file, thereby determine the device location of the electromagnetic equipments such as radar, facility information and the scene terrain information such as frequency, plant capacity, facility switching machine time, equipment moving track for equipment; According to the correlation parameter in XML file, in conjunction with electromagnetic propagation models such as moving window FDTD and UrbanCanyon, by Finite-Difference Time-Domain Method (FDTD), complete the calculating of the electromagnetic propertys such as electromagnetic power covering, path loss, arrival angle, time delay, result of calculation is exported to synthetic environment data Sedris Standardisation Cell and carry out data-switching.
As Fig. 5, the concrete steps of the electromagnetic characteristic of the goal is calculated are: first, obtain the cad model of respective objects from synthetic environment database; Complete scene and target and prefer writing of configuration file XML file, file including radar information and cad model information; Resolve configuration file XML file, obtain the CAD profile nature of device location, plant capacity and the equipment of electromagnetic equipment and the distance of target and target; Adopt method of finite difference (FDTD) electromagnetic calculation directly Maxwell equation group to be carried out to discretize, by mesh generation mode, target is carried out to spatial spreading, each space lattice is demarcated different material properties, thereby calculate the space distribution situation of target RCS, in conjunction with radar line of sight angle, obtain the make progress data of target RCS of the party, result of calculation is exported to synthetic environment data Sedris Standardisation Cell and carry out data-switching.
(2) synthetic environment data Sedris Standardisation Cell
Synthetic environment data Sedris Standardisation Cell, by receiving the multispectral section of synthetic environment data that synthetic environment Modelling and calculation unit sends, according to SEDRIS standard, is changed synthetic environmental data, deposits in Sedris synthetic environment database after converting; Synthetic environment database is used the several data in SQL Server storing virtual test synthetic environment.
The step that synthetic environment data Sedris Standardisation Cell is changed synthetic environmental data is as follows:
(1), according to the expression model (DRM) in SEDRIS standard, the synthetic environment data that receive are reconfigured;
(2) utilize the reference coordinate of Spatial reference model (SRM) definition environment object, the synthetic environment data after step (1) combination are transformed under above-mentioned reference frame;
(3) ir radiation data in synthetic environment data and the attribute of special efficacy data, electromagnetic data and atmosphere data after environment for use data encoding standard (EDCS) description step (2) processing;
(4) data after step (3) processing are saved as to STF formatted file.
(5) the synthetic environment data that meet SEDRIS standard after converting are deposited in Sedris synthetic environment database
(3) synthetic environment is played up and visualization
Before emulation starts, synthetic environment is played up and visualization is downloaded the required synthetic environment data of emulation from Sedris synthetic environment database, and in conjunction with the satellite geographic information data of downloading, according to emulation sight, is divided into some packets; In simulation process, utilize Dynamic loading technique, according to emulation progradation, progressively above-mentioned some packets are loaded in Visual Scene and complete playing up of Visual Scene.The dynamic load process implementation step of synthetic environment data and satellite geographic information data is as follows:
(1) in the VR-theworld database on CongMAK company official website, download the high precision satellite geographic information data in target scene area, by the satellite geographic information database from synthetic environment data and download according to the propelling of simulation process sequentially, the lower synthetic environment data that will load of different scenes and geographic information data are divided into different packets, store in hard disc of computer;
(2) preliminary stage of preparation starting in emulation, is loaded in calculator memory all packets in hard disc of computer are disposable;
(3), along with the propelling of emulation and the variation of scene, progressively the corresponding data bag in internal memory is loaded in Visual Scene.
Synthetic environment is played up and visualization is played up and comprised that infrared and electromagnetism plays up two parts the Visual Scene after loading;
Wherein, infrared render process is as follows:
(1) determine unit gray shade scale numerical value, for example, by the radiation value A unit of being defined as radiation value 1; Choosing according to the difference degree of the radiation value between each scene of emulation and target of radiation value A determine, as large in the difference degree of radiation value between each scene and target, A should choose fractional value; As little in the difference degree of radiation value between each scene and target, A should choose large numerical value.
(2) ir radiation data in the synthetic environment data of loading and gray shade scale numerical value are carried out to scale operation, obtain gray-scale value corresponding to different ir radiation data; For example the radiation value B of automobile metal car body in scene and the gray shade scale A of unit are carried out to scale operation (B/A=C), obtain the gray-scale value C of automobile metal car body.
(3) according to above-mentioned gray-scale value, generate gray-scale map, complete the visual of the infrared image of scene and target and infrared special efficacy; For example, the gray shade scale of automobile metal car body is C, the gray shade scale of tire is D, while showing in gray-scale map, the greyscale color of automobile metal car body is dark, and the greyscale color of doughnut is shallow, according to above method, carry out the conversion of gray-scale value and gray-scale map demonstration, just formed a complete gray-scale map.
Electromagnetism render process is as follows:
The first step, arranges different colors for different electromagnetism intensities; For example, when electromagnetism intensity reaches A, visual, middlely by peony, represent, when electromagnetism intensity reaches B, in visual middle use pale red expression; Electromagnetism intensity between [A B] is distinguished with red depth degree, and the color that approaches representative with A value is darker, and the color that approaches representative with B value is more shallow.
Second step according to the electromagnetic data in the synthetic environment data that load, loads corresponding color in the Visual Scene loading; For example, in Visual Scene, according to radar electromagnetism intensity around, adhere to different colors, electromagnetism intensity determines kind and the depth of color, and the space distribution scope of electromagnetic data determines that color is at space adhering zone.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (5)
1. multispectral section of synthetic environment simulation system, is characterized in that: comprise synthetic environment Modelling and calculation unit, synthetic environment data Sedris Standardisation Cell and synthetic environment is played up and visualization;
The electromagnetic property model of infrared characteristic model, scene and the target of Atmospheric models, scene and target, infrared special efficacy model, according to treating that artificial tasks completes the modeling of atmosphere, scene and Infrared Targets and electromagnetic property, are set up in synthetic environment Modelling and calculation unit; The infrared characteristic model of the scene of setting up and target is carried out to the calculating of atmospheric heat transmission effects and scene and target heat radiation and calculate, obtain the ir radiation data under different spectral coverage; Infrared special efficacy model is carried out to scene special effect scattering and radiation characteristic calculating, obtain the infrared special efficacy data under different spectral coverage; The electromagnetic property model of the scene of setting up and target is carried out to electromagnetic propagation property calculation and the calculating of target EM reflecting characteristics, obtain electromagnetic data and Electromagnetic Characters of Target data under different spectral coverage; Read the atmosphere data under the differing heights that Atmospheric models generate, the atmosphere data under the ir radiation data under different spectral coverage and special efficacy data, electromagnetic data, Electromagnetic Characters of Target data and differing heights is referred to as to synthetic environment data and is sent to synthetic environment data Sedris Standardisation Cell;
Synthetic environment data Sedris Standardisation Cell, by receiving the multispectral section of synthetic environment data that synthetic environment Modelling and calculation unit sends, according to SEDRIS standard, is changed synthetic environmental data, deposits in Sedris synthetic environment database after converting;
Synthetic environment is played up and visualization reads the synthetic environment data of Sedris standard format under current artificial tasks from Sedris synthetic environment database, utilize Dynamic loading technique progressively synthetic environment data to be loaded in Visual Scene according to emulation progradation, and the Visual Scene after loading is played up.
2. multispectral section of synthetic environment simulation system according to claim 1, is characterized in that: described synthetic environment Modelling and calculation unit comprises material classification submodule, infrared characteristic computing module, electromagnetic property computing module, atmosphere data generation module and particle FX Module;
Material classification submodule is classified according to material properties to the scene of obtaining and target satellite striograph or Aerial Images or target texture pinup picture, for different classification, generate different material coded files (MCM) and material system file (.ms) as the infrared characteristic model of scene and target; According to CAD geometric model and the model of place of objective body, the region in objective body and scene with identical material is divided simultaneously; The electromagnetism material information of zones of different is gathered for the electromagnetic property model of corresponding electromagnetic property file as scene and target;
Particle FX Module arranges particle properties parameter according to emulation demand, generates infrared special efficacy model;
Atmosphere data generation module obtains the air source data in the three-dimensional referenmce atomsphere model of NRLMSISE-00, and air source data are carried out to the atmosphere data that being converted to of time and coordinate system be take under the differing heights that longitude and latitude is unit;
Infrared characteristic computing module, according to different material coded files (MCM) and material system file (.ms) and the atmosphere radiation decay factor obtained, obtains the ir radiation data under different spectral coverage; Simultaneously according to the infrared special efficacy data under infrared special efficacy model generation different spectral coverage;
Electromagnetic property computing module is according to treating simulated environment, device location, frequency, plant capacity, facility switching machine time, equipment moving trace information and the scene terrain information for equipment of configuration electromagnetic equipment, generate an XML configuration file, in conjunction with the electromagnetic property file of above-mentioned zones of different, generate the electromagnetic data under different spectral coverage; Configure the CAD 3D model generation target property XML configuration file of device location, plant capacity and the equipment of electromagnetic equipment and the distance combining target of target, and then generation target radar reflective surface area is Electromagnetic Characters of Target data simultaneously.
3. multispectral section of synthetic environment simulation system according to claim 1, is characterized in that: the step that described synthetic environment data Sedris Standardisation Cell is changed synthetic environmental data is as follows:
(1), according to the expression model (DRM) in SEDRIS standard, the synthetic environment data that receive are reconfigured;
(2) utilize the reference coordinate of Spatial reference model (SRM) definition environment object, the synthetic environment data after step (1) combination are transformed under above-mentioned reference frame;
(3) ir radiation data in synthetic environment data and the attribute of special efficacy data, electromagnetic data and atmosphere data after environment for use data encoding standard (EDCS) description step (2) processing;
(4) data after step (3) processing are saved as to STF formatted file.
4. multispectral section of synthetic environment simulation system according to claim 1, is characterized in that: described synthetic environment is played up and visualization to utilize Dynamic loading technique progressively synthetic environment data to be loaded in Visual Scene to performing step according to emulation progradation as follows:
(1) download high-precision satellite geographic information data, according to simulation process, the data under different scenes are stored to the satellite geographic information database of synthetic environment data and download into hard disc of computer, obtain a plurality of independently packets;
(2), when emulation starts, be loaded in internal memory all packets in hard disc of computer are disposable;
(3), along with the propelling of emulation and the variation of scene, progressively the corresponding data bag in internal memory is loaded in Visual Scene.
5. multispectral section of synthetic environment simulation system according to claim 1, is characterized in that: described playing up comprises that infrared and electromagnetism plays up two parts;
Wherein, infrared render process is as follows:
(1) determine gray shade scale numerical value;
(2) ir radiation data in the synthetic environment data of loading and gray shade scale numerical value are carried out to scale operation, obtain gray-scale value corresponding to different ir radiation data;
(3) according to above-mentioned gray-scale value, generate gray-scale map, complete the visual of the infrared image of scene and target and infrared special efficacy;
Electromagnetism render process is as follows:
The first step, arranges different colors for different electromagnetism intensities;
Second step according to the electromagnetic data in the synthetic environment data that load, loads corresponding color in the Visual Scene loading.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104391734B (en) * | 2014-10-23 | 2017-08-29 | 中国运载火箭技术研究院 | Aircraft overall performance virtual test and evaluation system and method under synthetic environment |
| CN104391734A (en) * | 2014-10-23 | 2015-03-04 | 中国运载火箭技术研究院 | Virtual test identification system and method for overall performances of aircraft under synthetic environment |
| CN106053964A (en) * | 2016-05-18 | 2016-10-26 | 中国电子科技集团公司第四十研究所 | Distributed battlefield electromagnetic environment dynamic simulated building method |
| CN106053964B (en) * | 2016-05-18 | 2018-12-04 | 中国电子科技集团公司第四十一研究所 | A kind of distribution Battle Field Electromagnetic dynamic analog construction method |
| CN106094566A (en) * | 2016-06-13 | 2016-11-09 | 江西洪都航空工业集团有限责任公司 | A kind of method for low cost universal ground experiment simulation carrier aircraft system |
| CN106094566B (en) * | 2016-06-13 | 2019-03-29 | 江西洪都航空工业集团有限责任公司 | A method of carrier aircraft system is simulated for the universal ground experiment of low cost |
| US11270419B2 (en) | 2016-10-26 | 2022-03-08 | Tencent Technology (Shenzhen) Company Limited | Augmented reality scenario generation method, apparatus, system, and device |
| CN106383587A (en) * | 2016-10-26 | 2017-02-08 | 腾讯科技（深圳）有限公司 | Augmented reality scene generation method, device and equipment |
| WO2018077206A1 (en) * | 2016-10-26 | 2018-05-03 | 腾讯科技（深圳）有限公司 | Augmented reality scene generation method, device, system and equipment |
| CN108122217A (en) * | 2016-11-30 | 2018-06-05 | 北京航天计量测试技术研究所 | A kind of real-time infrared image Enhancement Method of adaptive scene |
| CN108122217B (en) * | 2016-11-30 | 2021-07-20 | 北京航天计量测试技术研究所 | Real-time infrared image enhancement method for self-adaptive scene |
| CN112639888A (en) * | 2018-08-09 | 2021-04-09 | 祖克斯有限公司 | Programmed world generation |
| US11861790B2 (en) | 2018-08-09 | 2024-01-02 | Zoox, Inc. | Procedural world generation using tertiary data |
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