CAJ | 학술논문

针对空间目标天基探测仿真系统需求,提出了一种基于卫星工具套件(STK)+MATLAB的深空背景点目标红外序列图像生成方法.点目标表面温度计算采用了比节点网络法更高效的等温简化模型以提高仿真效率;由比低分辨率光谱仪(LRS)模型更完备的中段空间实验卫星(MSX)红外星表提供深空背景模型,扩展了探测系统仿真应用领域;同时,建立了以电子数表征的目标背景照度和图像灰度转换模型.图像仿真过程中加入卫星扰动误差、相机测量误差和焦面电子学噪声,仿真生成的图像序列更接近真实物理过程.该仿真方法可以模拟任意时刻、任意指向和任意光学视场4～26 μm的点目标红外图像序列,图像生成实时性好.文章最后给出了某空间目标的红外序列图像仿真实例.
침대공간목표천기탐측방진계통수구,제출료일충기우위성공구투건(STK)+MATLAB적심공배경점목표홍외서렬도상생성방법.점목표표면온도계산채용료비절점망락법경고효적등온간화모형이제고방진효솔;유비저분변솔광보의(LRS)모형경완비적중단공간실험위성(MSX)홍외성표제공심공배경모형,확전료탐측계통방진응용영역;동시,건립료이전자수표정적목표배경조도화도상회도전환모형.도상방진과정중가입위성우동오차、상궤측량오차화초면전자학조성,방진생성적도상서렬경접근진실물리과정.해방진방법가이모의임의시각、임의지향화임의광학시장4～26 μm적점목표홍외도상서렬,도상생성실시성호.문장최후급출료모공간목표적홍외서렬도상방진실례.
In order to meet the demands of space-based detection simulation system, a method of infrared sequence image generation for point targets in deep space background is presented based on the Satellite Tool Kit(STK) and MATLAB. A simple isothermal model more efficient than the node network method is used to calculate the temperature of the space targets to improve the simulation efficiency, and a model of celestial background is presented based on Midcourse Space Experiment(MSX) infrared stellar catalog more complete than the Low Resolution Spectra(LRS) stellar catalog to extend the application of the space-based detection simulation system. The conversion model between the irradiance of target background and the image gray is established by calculating the electron numbers received by the detectors. The disturbance error of satellite, measurement error of camera and electronic noise of Focal Plane Array(FPA) are considered to generate images closed to a real world. Experimental results show that the proposed method can simulate the infrared sequence images of point targets at anytime, any viewpoint and any Field of View(FOV) (wavebands range from 4 μm to 26 μm). Finally, an infrared image sequence of some point targets are simulated.