CAJ | 학술논문

建立精确的光线几何模型，推导地物与影像间的正反算公式是航天TDI CCD(时间延迟积分电荷耦合器件)相机动态成像仿真的关键步骤。立体测绘卫星全链路仿真以光线追迹为主线，以高精度高分辨力地表物理模型为输入源，综合考虑了大气辐射传输、光学系统成像、探测器光谱响应和相机噪声等各个环节，完成了成像过程端到端的完整分析。以可见光光学遥感相机为例，在考虑轨道进动、地球在惯性系下的岁差章动和TDI CCD拼接的情况下，完成双线阵相机动态成像光线追迹几何建模，并对模型误差源进行分析。经实验验证与分析，正视相机几何物理模型定位精度达124 m，前视相机定位精度达193 m，满足立体测绘全链路仿真的几何建模要求。
건립정학적광선궤하모형，추도지물여영상간적정반산공식시항천TDI CCD(시간연지적분전하우합기건)상궤동태성상방진적관건보취。입체측회위성전련로방진이광선추적위주선，이고정도고분변력지표물리모형위수입원，종합고필료대기복사전수、광학계통성상、탐측기광보향응화상궤조성등각개배절，완성료성상과정단도단적완정분석。이가견광광학요감상궤위례，재고필궤도진동、지구재관성계하적세차장동화TDI CCD병접적정황하，완성쌍선진상궤동태성상광선추적궤하건모，병대모형오차원진행분석。경실험험증여분석，정시상궤궤하물리모형정위정도체124 m，전시상궤정위정도체193 m，만족입체측회전련로방진적궤하건모요구。
Establishing accurate light geometry model, feature and image between the positive and negative calculate formula is derived, which is the key steps of space TDI CCD (charge-coupled device) time delay integral camera dynamic imaging simulation. Stereo mapping satellite link simulation based on ray tracing all the main line, with high precision high resolution surface physical model for the input source, considering the atmospheric radiation transmission, optical system imaging spectral response, detectors and camera noise and so on each link, complete the imaging process end-to-end complete analysis. In visible light optical remote sensing camera, for example, considering the precession of orbit, the earth under the inertial system of precession and nutation TDI CCD stitching, under the condition of complete double array camera ray tracing dynamic imaging geometry modeling, and the model error sources are analyzed. Verified by experiment and analysis, physical model to face the camera geometry precision of 124 m, forward-looking camera positioning accuracy of 193 m, double line array camera is high precision, which satisfies the requirement of the geometrical model of three-dimensional mapping all link simulation.