遥感卫星双相机组合成像偏流角修正残差分析  

Analysis of Drift Angle Residual Errors for Dual-camera Combined Imaging in Remote Sensing Satellite

作　　者：朱兴鸿 韩杏子[2] 

机构地区：[1]国防科技大学航天科学与工程学院,长沙410073 [2]航天东方红卫星有限公司,北京100094

出　　处：《航天器工程》2016年第2期6-12,共7页Spacecraft Engineering

基　　金：基金项目:国家重大航天工程

摘　　要：针对国内遥感卫星工程中使用的双相机组合成像的配置,分析了双相机组合成像在偏流角修正中可能引入的误差,提出了一种通用的几何分析模型。基于全视场成像仿真方法,结合卫星实际场景,对卫星在不同姿态机动状态下的模型有效性进行了验证。研究结果表明:使用双相机组合成像的卫星,在无姿态机动(星下点成像)或常规侧摆机动时,成像质量基本不受影响;而俯仰机动时,系统将存在较大的偏流角修正残差,因此设计双相机组合成像卫星时不建议采用大角度俯仰机动成像。Dual-camera combined imaging system is equipped in domestic remote sensing satellite projects.The possibly induced drift angle residual error of the combined imaging is studied and a geometrical analytical model is established.The model is validated based on the full-view simulation method under different attitude maneuver conditions according to actual satellite imaging scena-rios.The result shows that the dual-camera combined imaging has good performance during sub-satellite point imaging as well as rolling maneuver,but a big drift angle residual error is foreseen to be induced while imaging at big pitching angle maneuver.For this reason the big pitching angle maneuver imaging should not be adopted while designing dual-camera combined imaging satellites.

关 键 词：遥感卫星 双相机组合成像 时间延迟积分CCD 成像质量 偏流角 残差 

分 类 号：V445.8[航空宇航科学与技术—飞行器设计]