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卫星姿态精度是制约高分辨率光学影像几何定位精度的一个重要因素,针对当前卫星姿态数据处理精度不高且难以验证的问题,提出一种基于双向滤波整体加权平滑的高精度卫星姿态数据地面处理算法,实现了卫星姿态数据地面精细化处理,进一步采用几何定标场的数字正射影像图/数字高程模型数据进行精度验证。以2014年11月发射的遥感-24号高分辨率光学卫星为例,分析结果表明,本文设计的姿态数据处理模型是稳健可靠的,姿态数据相对精度可以达到0.8″,且基于地面处理姿态数据得到的全色相机无控制点条件下影像几何纠正精度可以达到15m。
Satellite attitude accuracy is an important factor that restricts the accuracy of high-resolution optical image geometric positioning. Aiming at the problem of low accuracy and difficult to verify the accuracy of satellite attitude data processing, this paper proposes a high accuracy satellite attitude data ground processing based on bi-directional filter weighting and smoothing The algorithm realizes the fine ground processing of the satellite attitude data, and further uses the digital orthophoto map / digital elevation model data of the geometric calibration field to verify the accuracy. Taking the RS-24 high-resolution optical satellite launched in November 2014 as an example, the analysis results show that the pose data processing model designed in this paper is robust and reliable, and the relative accuracy of attitude data can reach 0.8 ". Based on the ground-based attitude data Get the full-color camera without control points under the condition of the image geometric correction accuracy can reach 15m.