摘要
针对光行差几何定位误差研究的不足,该文从光行差原理出发,推导出卫星对地观测中的光行差几何定位偏差计算公式,仿真光行差至少产生17m的几何定位偏差;然后在卫星遥感图像严密几何定位处理中,使用给出的视向量光行偏差角校正模型,实时校正严密几何定位模型中存在的光行差位置偏差,并给出校正模型。实际应用结果表明,该方法能够提高卫星遥感图像的几何定位精度。
Aiming at the insufficiency of studying on geometric location errors of the light aberration, the paper analyzed the principle of the light aberration, delivered the geometric location error formula caused by light aberration in detail, and calculated and simulated the error values; it was demonstrated as follows： in earth observation, light aberration causes at least 17 m geo-location error. During the processing of satellite rigorous geometric location, the aberration angle correction method presented in the paper was used to correct the aberration geometric location error in real time. Practical result showed that the method could improve the accuracy of geometric location for satellite imagery.
出处
《测绘科学》
CSCD
北大核心
2016年第9期16-19,190,共5页
Science of Surveying and Mapping
基金
国家"863"计划项目(2013AA12A303)
高分辨率对地观测系统重大专项(65-Y40B01-9001-13/15)
关键词
对地观测
严密几何模型
几何定位
光行差
误差校正
earth observation
rigorous geometric model
geometric location
light aberration
error correction
