三线阵测绘相机光学系统的杂光分析与计算

针对光学系统的杂光导致三线阵测绘相机成像质量下降的问题，根据光学系统的设计结果，对相机入口处的杂光能量、像面杂光辐照度、杂光系数等进行了分析与计算，提出了合理的杂光抑制措施。利用ThermalDesktop软件和Light—Tools软件，对三线阵立体测绘相机各光学系统进行分析与模拟计算，得到其杂光系数均小于5％。最后进行了光学实验，并利用面源法测试了杂光系数。检测结果验证了杂光分析与研究方法的正确性以及杂光抑制措施的可行性。

Analysis and calculation on stray light of three line array mapping camera

As the imaging quality of a three line array mapping camera can be reduced by stray light from dif- ferent optical systems, the effect of the stray light is analyzed according to the result of optical design and a suppression method is put forward to reduce stray light based on the analysis and calculation of the stray light energy, the stray light irradiance on an image plane and the stray light coefficients at the entrance of camera. The stray light models of a three line array mapping camera are built and analyzed by using the software Light- Tools, and the obtained stray light coefficient of each system is less than 5%. Finally, a pratical experiment to test the stray light coefficient is performed by the surface source method and the tested result proves the cor- rectness of the stray light analyzing and the feasibility of the stray light suppression methods.