缺少控制点的卫星遥感影像外推定位  

Extrapolative Location of High Resolution Remote Sensing Imageries

作　　者：袁修孝[1] 张过[1] 吴春华[2] 

机构地区：[1]武汉大学遥感信息工程学院,武汉市珞喻路129号430079 [2]北京遥感信息研究所,北京市清河小营东路2号100085

出　　处：《武汉大学学报（信息科学版）》2005年第7期575-579,共5页Geomatics and Information Science of Wuhan University

基　　金：高等学校全国优秀博士学位论文作者专项资金资助项目(200142);国家自然科学基金资助项目(40171072)。

摘　　要：简要介绍了遥感卫星轨道参数外推、传感器姿态和扫描侧视角精化的算法,分析了对国内某地区同一轨道上连续17景资源二号卫星影像进行外推对地目标定位的试验结果。在无地面控制点情况下,根据外推出的遥感卫星系统参数对单景影像实施几何纠正,当外推16景影像(深度达480km)时,对地目标定位精度不低于实地上的100m,明显好于利用卫星星历数据直接进行影像几何纠正的568m精度,从而验证了所建立外推模型的正确性和实用性。According to the orbital dynamical model and the kinematics model of satellite attitude, this paper developes an extrapolative location model. Testing the model on CBERS-2 high resolution satellite imageries of central China, when the depth of extrapolation is 480 km, the planimetric precision is 96.636 m including the measurement errors as well as the modeling error over than the 568 m which is the planimetric precision of systematic rectification. Thus, the validity of extrapolative location model is verified. The results show that the potential of using this model for rectifying other high resolution remote sensing imageries and object location on the condition of being short of ground control points.

关 键 词：卫星轨道 传感器姿态 扫描侧视角 影像纠正 精度 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置] P237.9[自动化与计算机技术—控制科学与工程]