我国第一颗民用三线阵立体测图卫星——资源三号测绘卫星

2012年1月9日,我国成功发射了第一颗民用三线阵立体测图卫星"资源三号测绘卫星",资源三号测绘卫星配置2台分辨率优于3.5 m、幅宽优于50 km的前后视全色TDI CCD相机,1台分辨率优于2.1 m、幅宽优于50 km的正视全色TDI CCD相机和1台分辨率优于5.8 m的多光谱相机;为了保证精度精度和可靠性,资源三号测绘卫星采用大平台、并配置双频GPS以及多个陀螺,经过处理,资源三号无控制点直接定位优于15 m,带控制点高程精度优于3 m,平面精度优于4 m,完全满足1∶50 000测图精度。

China’s First Civilian Three-line-array Stereo Mapping Satellite: ZY-3

On January 9th,2012,China launched its first civilian three-line-array stereo mapping satellite——ZY-3.ZY-3 is equipped with 2 front and back view TDI CCD cameras having the resolution better than 3.5 m and the width better than 50 km,1 TDI CCD camera with the resolution better than 2.1 m and the width better than 50 km and 1 multispectral camera with the resolution better than 5.8 m.In order to ensure accuracy and reliability,ZY-3 adopts a large platform which is equipped with double-frequency GPS and more gyroes.ZY-3 obtains its geolocation accuracy better than 15 m without GCPs,geolocation accuracy better than 3 m and plane geolocation accuracy better than 4 m with GCPs which completely satisfies 1∶50 000 mapping precision.