航空长焦距斜视相机严格成像模型与特性研究

Strict imaging model and its characteristics of aerial long range oblique photography camera

航空长焦距斜视(LOROP)相机成像模型是其几何检校、大气折射和安置误差改正的基础。通过分析LOROP相机的成像原理,剥离运动的摄影中心,构建了其具有物理意义、可解的严格成像模型,通过模拟仿真验证了其正确性,为相关研究提供了参考。理论分析和模拟测量表明光学系统与扫描镜同时摆扫的系统具有无像旋的优点。理论分析了LOROP相机的控制情况,结果表明穿轨扫描位置和像移补偿速度是与航速、航高正相关的非线性过程。

The imaging model for aerial long range oblique photography（LOROP） camera is the basis of geometric calibration, atmospheric refraction and assemble error correction. Through analysis of the imaging principle for LOROP camera, eliminating the moving photography center, the strict imaging model for LOROP with physical meaning and solvability is constructed, and its correctness is verified by simulation, which provides a reference for the related research. The oretical analysis and simulation measurements show that the system whose optical system and scanning mirror sweep together has the advantage of no image-rotation. The control situation of LOROP camera is analyzed theoretically. Results show that the cross-track scanning position and image motion compensation speed are nonlinear process which is positive correlated with the aviation speed and height.