摘要
针对卫星星座对地面区域的覆盖性问题,提出一种快速求解方法—经度条带法。首先将全球划分为若干个经度条带,并得到一个地面区域所在的纬度区间,然后根据球面几何关系和卫星覆盖与几何形状计算卫星对每个条带的覆盖情况,最后再综合统计得到覆盖率。基于此方法,推导了星座瞬时性覆盖和时段总覆盖的计算公式。数值仿真实验表明,该算法计算结果精确,具有较好的稳定性,计算效率较高。
Aiming at calculating the coverage problem between satellite constellation and the ground re- gions, an efficient method which named longitude stripe method is implemented. Firstly, the global is di- vided into many longitude stripes, and then the cover state of each longitude stripe is calculated by means of the spherical geometry relationship. Finally, the comprehensive statistics is made to get the coverage rate. Based on this method, the instant coverage formula and time range coverage formula are derived. The sim- ulation results show that the calculation result is accurate and this algorithm has a good stability and high efficiency.
出处
《航天控制》
CSCD
北大核心
2014年第5期65-70,76,共7页
Aerospace Control
基金
十二五民用航天预先研究基金
国家自然科学基金(61103144)
中国博士后科学基金(2012T50681
2011M501260)
关键词
卫星星座
区域目标
覆盖计算
经度条带法
网格点法
Satellite constellation
Area target
Coverage calculation
Longitude stripe method
Net-point method
