Research On Simulation Technology Of Photoelectric Theodolite Infrared Imaging In Complex Environment

Infrared scene simulation for tracking application is playing an important role in the performance testing of optoelectronic tracking systems.With the increase requirements of infrared target tracking stability in complex environments,infrared scene simulation which is high realistic and with complex interference elements becomes essential.This paper aims at the performance evaluation of photoelectric theodolite servo tracking system based on the infrared imaging link model,and constructed an infrared scene with high realism,high complexity and high frame rate for tracking application.And it also realized the target tracking process in complex interference environment.The main research results are:1.Research on simulation principle and simulation framework of infrared scene in the viewport of photoelectric theodolite.First of all,the imaging system of photoelectric theodolite is introduced and its imaging features are analyzed.Then the simulation principle of infrared scene is analyzed.Finally,aiming at the imaging characteristics of the photoelectric theodolite,the paper proposes a combined scene model of the “planar terrain-panoramic background-sky dome”,which provides a theoretical basis for the realization of the simulation.2.A combined infrared scene construction of “planar terrain-panoramic background-sky dome” with high realism is realized.According to the characteristics of scene for tracking application,firstly,the infrared texture generated by the remote sensing image is mapped to the planar model to construct a planar terrain.Second,using real images sequence as a splicing,and mapping it to the round-belt model to complete the background creation.Third,mapping the real shot of the sky texture to the sky dome to construct the sky background.Finally,an infrared scene simulation with high realism,high complexity,and high frame rate is completed by OGRE rendering engine.3.Construction of scene object and dimension scaling correction.Using the change regulation of actual target size to the imaging pixel,the size scaling formula of the target in the scene is derived.And on this basis,the dynamic scaling formula when the target “collides” with the wall is deduced.At last,a sense of depth when tracking target in a two-dimensional background is achieved.4.The implementation of sudden change of the targets.Based on the particle system,infrared smoke interference and battlefield fire are added in the scene.And the shelter next to the target path is set.So that the target undergoes a sudden change in shape and radiance.And finally,the target tracking simulation image sequence under complex interference environment is output.The simulation result with an average frame rate of 62 Hz is characterized by complex background elements,interference elements and targets with sudden change.It's capable to meet the performance testing requirements of photoelectric theodolite servo tracking system...