基于RFM模型的GF-2卫星数据几何校正精度探讨  

Research on Geometrical Calibration Precision of GF-2 Satellite Data Based on RFM Model

作　　者：马世斌[1,2,3] 杨文芳 皮英楠[1,2,3] 李生辉 辛荣芳[1,2,3] MA Shi-bin;YANG Wen-fang;PI Ying-nan;LI Sheng-hui;XIN Rong-fang(Institute of Geological Survey of Qinghai Province,Xining 810012 China;Qinghai-Tibet Plateau During the North Qilian Geology andMineral Resources Laboratory of Qinghai Province,Xining 810012 China;Land Satellite Remote Sensing Application Center of Qinghai,Xining 810012 China)

机构地区：[1]青海省地质调查院,青海西宁810012 [2]青海省青藏高原北祁连地质过程与矿产资源重点实验室,青海西宁810012 [3]国土资源青海卫星应用技术中心,青海西宁810012

出　　处：《自动化技术与应用》2020年第9期57-60,共4页Techniques of Automation and Applications

基　　金：中国地质调查局项目“全国矿山开发状况遥感地质调查与监测”(编号DD20190511);“全国矿山环境恢复治理状况遥感地质调查与监测”(编号DD20190705)。

摘　　要：本文以GF-2国产卫星原始数据为研究对象,在基于RFM下分别采用不同精度DEM数据和不同数量的GCP的参与下来探讨对GF-2卫星全色波段原始数据的几何纠正精度的影响。结果表明:在一定数量GCP参与下采用10m分辨率DEM纠正的全色波段影像精度要明显高于30m分辨率DEM,通过分析在8个GCP参与下采用30m分辨率DEM纠正的全色波段影像最大中误差为4.74m,达到1:10000尺度精度要求;此外,并不是参与纠正的GCP数量越多其图像纠正的精度就越高,GCP参与的数量在6-8个时纠正的图像精度相差不大,在30m分辨率DEM参与下GCP数量最少为6个所纠正的全色波段影像才能满足1:10000工作的精度要求。Taking GF-2 satellite raw data as the research object,the influence of different precision DEM data and different quantities of GCP on the geometric correction accuracy of GF-2 satellite panchromatic band raw data is discussed based on RFM.The results show that:With the participation of a certain number of GCP,the image accuracy corrected by DEM with 10m resolution is significantly higher than that of DEM using 30m resolution.With the participation of 8 GCPs,the image corrected with 30m resolution DEM achieves 1:10000 scale accuracy requirements.In addition,the accuracy of the images corrected when the number of GCP participants is 6-8 is not much different.With the participation of 30m resolution DEM,the number of GCP images with at least 6 corrected panchromatic bands can meet the accuracy requirements of 1:10000.

关 键 词：RFM模型 GF-2卫星数据 几何纠正精度 

分 类 号：TP79P:273[自动化与计算机技术—检测技术与自动化装置]