“资源三号”高分辨率立体测绘卫星三线阵相机设计与验证

【作者】 岳涛； 高卫军； 孙立； 王长杰； 刘晓鹏； 朱永红； 张继友； 何红艳； 年华；

【机构】 北京空间机电研究所；

【摘要】 2012年1月9日,中国第一颗民用高分辨率立体测绘卫星——"资源三号"卫星在太原卫星发射中心成功发射,该卫星集测绘和资源调查功能于一体,主要用于1:50000比例尺立体测图和彩色数字正射影像制作,还可用于1:25 000等更大比例尺地图部分要素的更新、资源调查和区域规划等任务。三线阵相机分系统和多光谱相机分系统是"资源三号"卫星的重要有效载荷。三线阵相机可以获取2.1m地面像元分辨率(正视相机)和3.5m地面像元分辨率(前/后视相机)全色影像;多光谱相机可以获取5.8m地面像元分辨率4谱段多光谱影像。其中前视、正视、后视相机可以生成立体影像,正视相机与多光谱相机影像融合可以生成彩色正射影像产品。本文介绍了三线阵相机和多光谱相机的组成及工作原理、关键技术及实现情况、在轨运行和测试情况,给出了在轨测试的初步结果。在轨运行情况表明:相机设计合理,成像品质优异,各项指标满足1:50 000制图应用的要求,实现了内方位元素的高精度稳定,对卫星定位精度达到国际先进水平发挥了关键作用。更多还原

【Abstract】 On January 9,2012,ZY-3 satellite,the first civil high resolution stereo mapping satellite in China,was successfully launched at the TAIYUAN satellite-launching center.The primary functions of the satellite are mapping and resource investigation.It can mainly be used not only to generate 1:50000 scales of stereo mapping and multicolor digital orthogonal images,but also for updates of map elements,resource investigation,regional planning,and so on. The three-line camera subsystem and the multi-spectrum camera subsystem are the most important payloads carried by ZY-3 satellite.The three-line camera has ability to obtain panchromatic images with 2.1m GSD for orthometric camera and 3.5m GSD for forward/backward cameras,and the multi-spectrum camera can obtain four-band multi-spectral images with 5.8m GSD.Stereo images can be obtained by images generate by the forward,orthometric,and backward cameras. Multicolor orthogonal images can be obtained by merging images obtained by the orthometric camera with images obtained by the multi-spectrum camera. This paper introduces the three-line camera and the multi-spectrum camera from the aspects of composition and operating principle,critical techniques and corresponding implementation, in-orbit operation and tests.The preliminary in-orbit test results have also been given in the paper. The in-orbit operation status indicates that the camera design be rational and image quality be excellent,and each qualification meet the requirements of 1:50 000 mapping application.The interior orientation elements of the camera have proved high-accuracy stable,which plays a key role on improving the satellite positioning precision up to the international advanced levels.更多还原