宽视场推扫式成像光谱仪杂散光校正方法研究  

Research on correction method of stray light in large field push-broom imaging spectrometer

作　　者：张腾飞[1,2] 黄小仙[1] 危峻[1] 王宏博[1,2] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]中国科学院大学,北京100049

出　　处：《激光与红外》2016年第11期1375-1378,共4页Laser & Infrared

基　　金：国防科工局预研项目(No.Y5X77329NOX)资助

摘　　要：为了满足海洋水色宽覆盖与高灵敏度探测的遥感需求,正在研制一台宽视场推扫式成像光谱仪原理样机,针对该仪器存在的杂散光现象展开了研究。由于推扫式成像光谱仪穿轨和沿轨方向上视场存在巨大差异,这导致穿轨方向上的杂散光远大于沿轨方向,并明显地表现在图像中。为了避免杂散光影响海洋水色的定量化反演,建立了杂散光模型,并以此为基础提出了杂散光校正的方法,同时给出了校正效果的定量化表征。结果表明,该方法可以利用实验数据有效地消除成像光谱仪视场内杂散光的影响。In order to satisfy the needs of ocean color wide coverage and high sensitive detection, the large field push- broom imaging spectrometer is developed, and its stray light is studied. Due to the great differences of field of view at across orbit and along orbit direction in push-broom imaging spectrometer, stray lights at across orbit direction are more than those at along orbit direction,which leads to significant differences in images. In order to reduce the effect of stray light on ocean color quantitative inversion, a stray light model is set up, and a correction method of stray light is proposed. The quantitative characterization of the correction is given. Experiment results show that this method can effectively reduce the impact of stray light.

关 键 词：推扫式 成像光谱仪 杂散光 线扩散函数 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置]