一种确定性星座对地覆盖计算方法  

Deterministic method for coverage of constellation to ground region

作　　者：陈晓宇[1] 戴光明[1,2] 王茂才[1,2] 宋志明[1,2] 

机构地区：[1]中国地质大学计算机学院,武汉430074 [2]智能地学信息处理湖北省重点实验室(中国地质大学),武汉430074

出　　处：《哈尔滨工业大学学报》2017年第4期55-60,共6页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金(41571403;61472375;61103144)

摘　　要：为提高星地覆盖计算精度和效率,研究了星座对地覆盖问题.首先,分析了星座对地覆盖几何特性,着重研究了基于Delaunay三角网和Voronoi图的星座空间几何构形划分方法;其次,通过定义卫星的所属覆盖区域,将星座对地覆盖问题简化为单星覆盖问题.并在此基础上提出了星座对任意类型地面目标覆盖能力的精确、快速计算方法;最后,比较不同覆盖目标下,所提出的方法和经典的网格点划分方法的计算精度和计算效率.实验结果表明,所提出方法具有正确性和高效性,且该方法可以有效应用于卫星星座优化设计和性能分析中.To improve the coverage accuracy and efficiency of the satellite,the geometric characteristic related to satellite coverage of a ground region is analyzed,and the division method for space geometric configuration of constellation is mainly studied based on the properties of the Delaunay triangulation and the Voronoi Diagram.Subsequently,the constellation coverage problem is simplified into multiple one-satellite coverage problems by defining the coverage area of each satellite. Furthermore,an accurate and effective approach to solve the satellite constellation coverage problem for any type of coverage area is put forward. Finally,the comparison of accuracy and efficiency between the proposed approach and the classic Grid-point method is given for different target areas. The test result shows that the proposed method is valid and more efficient. The proposed method can also be used in satellite constellation optimization design and performance evaluation.

关 键 词：卫星星座 覆盖计算 性能分析 DELAUNAY三角网 VORONOI图 

分 类 号：V474[航空宇航科学与技术—飞行器设计]