优化部分有理多项式系数的卫星影像精确定位  被引量:1

Accurate positioning of satellite imagery based on optimizing partial RPCs

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作  者:张夕宁 邓非[1,2] 蒲生亮 杨勇占 ZHANG Xining;DENG Fei;PU Shengliang;YANG Yongzhan(School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China;Collaborative Innovation Center for Territorial Sovereignty and Maritime Rights,Wuhan 430079,China)

机构地区:[1]武汉大学测绘学院,武汉430079 [2]国家领土主权与海洋权益协同创新中心,武汉430079

出  处:《测绘科学》2019年第11期176-183,共8页Science of Surveying and Mapping

基  金:国土资源部城市土地资源监测与仿真重点实验室开放基金资助课题项目(KF-2018-03-025)

摘  要:针对目前在补偿卫星影像RPC模型对地定位的系统误差时所广泛采用的像方补偿方法存在需要引入附加参数、无法从实质上消除RPC参数中系统误差的不足,该文提出了一种利用少量地面控制点直接对部分RPC参数进行优化来补偿定位的系统误差的方法,并将该方法进一步运用到基于RPC模型的区域网平差中。以武汉地区和法国Sainte-Maxime地区的ZY-3卫星影像为实验对象,在空间前方交会和区域网平差实验中将本文方法与像方补偿方法做了充分对比。实验结果表明,该方法可达到不低于像方补偿方法的理想定位精度。同时,与像方补偿方法相比,该方法不需引入附加补偿参数,优化后RPC模型形式统一,更加便于后续的计算和处理,可以实现真正意义上的基于RPC模型的卫星遥感影像精确定位。In the view of the currently widely used image-space compensation method has some disadvantages,including the requirement of additional compensation parameters and the impossibility of substantially eliminating the systematic error in the RPCs,in compensating the geo-positioning systematic error of using RPC model attached to the satellite imagery,a method of using a small amount of ground control points to directly optimize the partial RPCs was proposed,and this method was further applied to block adjustment based on RPC model.ZY-3 triple linear-array images covering Wuhan region and SainteMaxime region of France were tested and fully compared with the image-space compensation method in the spatial intersection and block adjustment experiments.The experimental results show that the positioning accuracy of the proposed method is no less than that of image-space compensation method.At the same time,compared with the image-space compensation method,the proposed method does not require additional compensation parameters,and the optimized RPC model is unified,which is more convenient for subsequent calculation and processing.It can realize the accurate positioning of satellite remote sensing images based on RPC model in true sense.

关 键 词:RPC模型 系统误差 RPCs参数优化 区域网平差 定位精度 

分 类 号:P236[天文地球—摄影测量与遥感]

 

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