多光谱相机计算机辅助装调方法  

Computer-Aided Alignment Technology of Multi-Spectral Camera

作　　者：张超[1] 魏学敏[1] 赵希婷 焦文春[1] 廖志波[1] 

机构地区：[1]北京空间机电研究所,北京100094

出　　处：《光学学报》2015年第8期152-158,共7页Acta Optica Sinica

摘　　要：应用于航天遥感领域的光学相机光学元件多,分离变量多,结构复杂,成像质量要求接近衍射极限,对光学装调有着苛刻的要求。结合装调数学模型,将CODE V光学设计软件与各视场干涉图的Zernike系数整合为装调变量,优化求取失调量;根据离轴三反系统理想光学模型求取装调灵敏度矩阵及确定多标量修正次序,有效克服装调变量相关性。在波长λ为632.8 nm时,成功将多光谱相机装调结果均方根(RMS)由0.563λ提升至0.064λ,实现了多光谱相机高精度、高效率的装调。Refract optical system using in remote sensing usually has many elements, complicated structure and diffraction limited image quality, which makes the alignment puzzled. Combined with the adjustment mathematical model, the CODE V optical design software and the field interference Zernike coefficient are integrated into the alignment variables for calculating the misalignment. According to the off-axis three mirror ideal optical system model, the alignment sensitivity matrix is acquired and the correct order of multi misalignment variables is determined, which can overcome the alignment correlation effectively. It is effective and convenient to raise the optical system wavefront error root mean square （RMS） from 0.563 λ （=632.8 nm） to 0.064 λ. After the orbit test, the multi-spectral camera imaging quality is excellent.

关 键 词：遥感 计算机辅助装调 反向优化 多光谱相机 

分 类 号：TH741.1[机械工程—光学工程]