航天器工程2017，Vol.26Issue(2)：14-21,8.DOI:10.3969/j.issn.1673-8748.2017.02.003
基于Petri网的Walker导航星座备份策略研究
Research on Spare Strategy of Walker Navigation Constellation Based on Petri Net
胡敏 1宋旭民 1杨雪榕1
作者信息
- 1. 中国人民解放军装备学院,北京 101416
- 折叠
摘要
Abstract
This paper proposes a spare strategy of Walker navigation constellation based on Petri net.The strategy considers the main uncertain factors during the operation phase of navigation constellations.The obtained space strategy based on the proposed approach can make the real operation of navigation constellations be very close to the expected constellation availability.The Walker 24/3/1:21528 km,55°is taken as an example,the following three scenarios are analyzed:the first scenario is with no spare satellite,the second scenario is only with the spare satellites on the ground,and the third scenario is with both on-orbit and on the ground spare satellites.The results of analysis indicate that with three spare satellite on orbit and three spare satellites on the ground can guarantee the steady operation of navigation constellation,which can provide some references for the spare strategy selection of Walker navigation constellation.关键词
Walker导航星座/Petri网/在轨备份/地面备份/星座可用性Key words
Walker navigation constellation/Petri net/on-orbit spare/on the ground spare/constellation availability分类
天文与地球科学引用本文复制引用
胡敏,宋旭民,杨雪榕..基于Petri网的Walker导航星座备份策略研究[J].航天器工程,2017,26(2):14-21,8.
