| 伪卫星独立组网布站优化设计 |
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| 引用本文： | 毛悦,司毅博,宋小勇,贾小林.伪卫星独立组网布站优化设计[J].测绘科学技术学报,2017(6):564-569. |
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| 作者姓名： | 毛悦 司毅博 宋小勇 贾小林 |
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| 作者单位： | 1. 地理信息工程国家重点实验室,陕西西安710054;西安测绘研究所,陕西西安710054;2. 北京卫星导航中心,北京,100094 |
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| 基金项目： | 国家自然科学基金项目(41774012) |
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| 摘 要： | 本文针对伪卫星独立组网站址设计遍历搜索算法计算量过大的问题,梳理了顾及地形条件的伪卫星布站设计实施方案。采用逐点外推DEM格网可视域分析方法,避免了交叉点的重复计算问题。采用基于优选基础构型的分区搜索方法,避免了大量无效计算点。实际计算表明,分区搜索结合金字塔策略可以使计算量降低为原有计算量的8.43×10~(-7)%。
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| 关 键 词： | 地基导航 定位精度因子 布站优化 伪卫星 可视性分析 |
Optimization Design for the Iayout of Pseudolite-Alone Navigation Service |
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| Abstract: | In order to solve the problem that the pseudolites layout design requires large amount of computation,a practical scheme which takes the influence of the service area's terrain into account was designed in this paper.Using the point by point extrapolation method,the repeating calculation of the intersection points in DEM visible range analysis could be avoided.Using partition searching method based on the optimizing basis configuration,lots of useless calculation points could be eliminated.And the calculated result shows that the calculation amount can reduce to 8.43×10-7％ of the origin using the partition searching algorithm combined with the pyramid strategy. |
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| Keywords: | ground-based navigation dilution of precision location optimization pseudolite visibility analysis |
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