数字太阳敏感器成像建模与仿真  

Imaging modeling and simulation for digital sun sensor

作　　者：刘啸峰[1] 樊巧云[1] 张广军[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院精密光机电一体化技术教育部重点实验室,北京100191

出　　处：《红外与激光工程》2012年第3期677-683,共7页Infrared and Laser Engineering

基　　金：长江学者和创新团队发展计划(IRT0705);国家自然科学基金(61008032)

摘　　要：为了仿真太阳光的成像情况,基于标量衍射理论、辐射度学建立了包括光学系统模型和光电转换模型在内的完整的数字太阳敏感器成像模型。该模型适用于视场范围内任意角度入射的太阳光。同时,该模型所包含的从太阳辐射到成像面上像元灰度的能量转换体系完整准确。将太阳辐射作为模型输入进行了数值仿真,并与基于太阳模拟器的地面实验结果进行了对比分析。结果表明,该成像模型能比较准确地模拟太阳光的成像情况。该研究为后续的基于太阳敏感器的太阳光和杂散光成像仿真和对比研究提供了基础。Based on the scalar diffraction theory and radiometry,a complete imaging model including an optical system model and a photoelectric conversion model for a digital sun sensor was established for sunlight imaging simulation.The model was applicable for any beam of sunlight with an arbitrary incident angle within the field of view.Meanwhile,energy conversion hierarchy of the model from solar radiation to gray of each pixel on the detector was complete and correct.Numerical simulation was carried out with a solar radiation as an input of the model.Its results were compared with the results of the ground experiment based on a solar simulator.The results indicate that the imaging model can be used to simulate the sun imaging accurately.It provides a solid foundation for a subsequent research on the imaging simulation and comparison between sunlight and stray light based on a sun sensor.

关 键 词：数字太阳敏感器 成像仿真 光学系统 光电转换 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]