Constellation-to-ground coverage analysis is an important problem in practical satellite applications. The classical net point method is one of the most commonly used algorithms in resolving this problem, indicating that the computation efficiency significantly depends on the high-precision requirement. On this basis, an improved cell area-based method is proposed in this paper, in which a cell is used as the basic analytical unit. By calculating the accuracy area of a cell that is partly contained by the ground region or partly covered by the constellation, the accurate coverage area can be obtained accordingly. Experiments simulating different types of coverage problems are conducted, and the results reveal the correctness and high efficiency of the proposed analytical method.

中文翻译：

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基于小区区域的卫星星座覆盖能力分析方法

星座对地覆盖分析是实际卫星应用中的一个重要问题。经典的网点法是解决该问题最常用的算法之一，表明计算效率很大程度上取决于高精度要求。在此基础上，本文提出了一种改进的基于单元格区域的方法，其中以单元格为基本分析单元。通过计算部分被地面区域包含或部分被星座覆盖的小区的准确区域，可以相应地获得准确的覆盖区域。进行了模拟不同类型覆盖问题的实验，结果表明所提出的分析方法的正确性和高效性。