一种基于RPC模型的高分卫星影像侧视角计算方法  

A calculation method of incidence angle based on RPC model for high-resolution satellite imagery

作　　者：尚大帅 李志勇 汪建峰 尹亚娟 SHANG Dashuai;LI Zhiyong;WANG Jianfeng;YIN Yajuan(Xi′an Station of Surveying and Mapping,Xi′an 710054,China)

机构地区：[1]西安测绘总站,陕西西安710054

出　　处：《测绘工程》2020年第4期11-14,共4页Engineering of Surveying and Mapping

摘　　要：针对侧视成像的角度计算问题,结合高分辨率卫星影像成像特点,提出一种基于RPC模型利用卫星影像中心像点坐标和指定高程值快速计算高分卫星影像侧视角的方法,原理简单,计算量小,易于实现,具有较好工程应用价值。试验结果表明,该方法具有较好的精度和稳定性,能基本满足后期数据处理对侧视角信息的要求。Aiming at the angle calculation of side-view imaging and combining the characteristic of high-resolution satellite imagery,a calculation method of incidence angle based on RPC model for high-resolution satellite imagery is put forward by the pixel coordinate of the centre of image and the specified elevation value,which is simple in principle,small in calculation,easy to implement and has advantages in engineering applications.Experiment results show that this method gains a good accuracy and reliability and can meet the requirements of the later data processing in incidence angle.

关 键 词：高分卫星影像 侧视成像 侧视角 有理函数模型 共线方程 

分 类 号：P225.2[天文地球—大地测量学与测量工程] P237.3[天文地球—测绘科学与技术]