光学摄影测量卫星发展

Development of Optical Satellite Photogrammetry

光学卫星摄影测量是获取全球地理空间数据的有效手段。文章简要介绍了"全球连续覆盖"和"局部区域覆盖"两种摄影模式的基本特点,阐述了卫星影像无控定位的实质和精度评估方法,重点对卫星影像无控高精度定位的关键技术-相机参数在轨标定和空中三角测量平差进行了分析。同时,文章介绍的相关理论和方法,对于全球连续覆盖模式卫星影像地面处理均有借鉴作用。

Optical satellite photogrammetry is an effective means of obtaining global geographic information.In this paper,the basic features of global continuous coverage and local area coverage are introduced briefly.Then the essence and assessment methods of location accuracy without ground control points(GCPs)are described.Finally,the key technology is analyzed to realize high location accuracy without GCPs using satellite imagery,including camera parameters calibration and aerial triangulation adjustment.Meanwhile,the related theories and methods introduced in this paper,are useful for the ground processing of other satellite imagery with global continuous coverage mode.