陆地碳监测卫星光学立体影像定位精度分析  

Analysis of Optical Stereo Image Positioning Accuracy ofTerrestrial Carbon Monitor Satellite

作　　者：丁健行 唐新明 祝小勇 曲典 刘翔 DING Jianhang;TANG Xinming;ZHU Xiaoyong;QU Dian;LIU Xiang(Faculty of Geomatics,Lanzhou Jiaotong University,Lanzhou 730070,China;Land Satellites Remote Sensing Application Center,Ministry of Natural Resources of the People’s Republic of China,Beijing 100048,China;National-local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring,Lanzhou 730070,China;Gansu Provincial Engineering Laboratory for National Geographic State Monitoring,Lanzhou 730070,China)

机构地区：[1]兰州交通大学测绘与地理信息学院,兰州730070 [2]自然资源部国土卫星遥感应用中心,北京100048 [3]地理国情监测技术应用国家地方联合工程研究中心,兰州730070 [4]甘肃省地理国情监测工程实验室,兰州730070

出　　处：《遥感信息》2024年第1期121-128,共8页Remote Sensing Information

基　　金：国家重点研发计划(2018YFB0504903-3);高分辨率对地观测系统重大专项(42-Y30B04-9001-19/21)。

摘　　要：陆地碳监测(terrestrial carbon monitor satellite,CM-1)卫星主要应用于陆地生态资源调查监测,因此,对其光学立体影像定位精度及DSM质量分析具有重要意义。首先,利用参考影像和AW3D30 DEM数据,在CM-1卫星立体影像上匹配一定量控制点,进行区域网平差,以验证CM-1卫星影像立体定位精度;随后,将CM-1立体影像提取的DSM数据分别与AW3D30 DEM和ICESat-2激光测高数据对比分析;最后,利用平均值、标准差和均方根误差3项指标评估CM-1立体影像提取的DSM精度。结果表明,有控条件下,相对于数字正射影像,CM-1卫星立体影像在平原地区平面定位精度达到1 m,相对于AW3D30 DEM,平原地区高程定位精度达到1.57 m。前视后视立体影像提取的DSM精度高于前视正视、后视正视立体影像提取的DSM精度。The CM-1 satellite,as the first high-precision forest resource detection satellite in China,is of great significance to the analysis of its optical stereoscopic image positioning accuracy and DSM quality.Firstly,in this paper,the reference image and AW3D30 DEM are used to match a certain amount of control points on the CM-1 satellite stereoscopic image,and the block adjustment is carried out to verify the stereoscopic positioning accuracy of the CM-1 satellite image.Then,the DSM data extracted by CM-1 stereo image are compared with AW3D30 DEM and ICESat-2 laser altimetry data respectively.Finally,mean value,standard deviation and root mean square error are used to evaluate the accuracy of DSM extracted by CM-1 stereo images.The results show that,under the controlled condition,compared with the digital orthophoto map,the plane positioning accuracy of CM-1 satellite stereo image in the plain area reaches 1 m,and the elevation positioning accuracy in the plain area reaches 1.57 m compared with AW3D30 DEM.The DSM accuracy by forward and backward image extracting is higher than that by forward and nadir image,nadir and backward image extracting.

关 键 词：陆地碳监测卫星 区域网平差 有理函数模型 数字地表模型 卫星激光测高 

分 类 号：P237[天文地球—摄影测量与遥感]