在多谱段扫描图象的利用过程中,定位问题显得愈来愈重要。如使用同一地区不同时相的多谱段扫描图象对地面某种要素的变化部分作对比分析或特征提取时,以及与其它类型图象匹配时,必须对图象作几何处理。本文对数字处理方法的研究结果作一介绍。

LANDSAT MSS COT data was generally rtecti’xied by polynomials, hardly thinking over the geometric characters, the residual error and ite well-distribution’depend on the ground control points and its distribution.In this study, we use the co-lineal equations in traditional photogrammetric as the mathematic foundation. The traditional photogrammetric single point rosection in space of a frame photography, here degenerates as the frame is substitutes by a line. The sa-tellite orientation elements is the function of scanning time (or scanning line). The mathematical model has been established between the image pixels and the ground tar-gets. We have also developed the corresponding software. The utility of the theory and software mentioned above was proved by experiment.