面向任意几何区域的遥感卫星对地覆盖法*

为了满足对任意几何区域进行覆盖特性分析的需要，本文在传统网格点覆盖法对矩形区域进行覆盖特性分析的基础上，对网格点构建、卫星过境覆盖分析等环节进行改进，使其适合对任意几何区域进行覆盖特性分析的需要，最后以中国行政区域为例进行实验并通过过境特性表、过境重绘图和覆盖重数图等进行覆盖特性的可视化。结果表明了本文研究的对地覆盖法在任意几何区域上能够准确的计算出其每次过境的覆盖区域及总覆盖区域，同时在实验分析中通过多种可视化方法展示目标区域的覆盖特性，使其更加直观。

The remote sensing satellite covering method over ground facing to any geometric area

In order to satisfy the need of covering character analysis facing to any geometric area, this article makes improvement in step of grid point build and satellite transit covering on the basis of traditional grid point covering method making covering character analysis in rectangular region. It suits the need of any geometric area covering character analysis. At last, it uses China administrative region as test example to make covering character visualization according to transit character list, transit heavy draw, and covering multiplicity figure. It turned out that this over ground covering method can acutely calculate the transit area and total area on random geometric area every time. And it uses several visualization methods to show target area covering character in experimental analysis to make it more intuition.