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我国月球探测工程发展概述 被引量:2
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作者 王晓海 《数字通信世界》 2005年第1期54-59,共6页
本文简要介绍我国实施探月工程情况,其中,对我国实施月球探测工程中的关键技术分轨道设计,测控和数据传输,制导、导航与控制,热控技术四个领域进行讨论。最后,再次强调我国开展探月工程的必要性和重要性。
关键词 中国 月球探测 分轨道设计 数据传输 制导 导航 热控
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Necessary and sufficient conditions of the rendezvous between a single spacecraft and three non-coplanar Walker constellation satellites 被引量:2
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作者 ZHANG Jing WU MeiPing 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第9期2254-2262,共9页
The probability of the rendezvous between a single spacecraft and three non-coplanar constellation satellites is studied,and the necessary and sufficient conditions of the rendezvous without orbital maneuver are deduc... The probability of the rendezvous between a single spacecraft and three non-coplanar constellation satellites is studied,and the necessary and sufficient conditions of the rendezvous without orbital maneuver are deduced.The rendezvous orbit design can be transformed into the patching of two spacecraft orbits,either of which can achieve the rendezvous with two satellites.Firstly,due to the precious quality of spherical geometry,the unique existence of the rendezvous orbit for two constellation satellites is proved.Then,according to the difference between equispaced and non-equispaced orbital planes of three satellites,the necessary and sufficient conditions are given respectively,and the calculating method of the spacecraft orbit is proposed.At last,the constraint conditions between two different rendezvous orbits is derived,while the relative position of two groups of objects are under specific distribution.The results can be applied to the rendezvous between a single spacecraft and multiple constellation satellites without orbital maneuver. 展开更多
关键词 Walker constellation necessary and sufficient conditions orbital design rendezvous with multiple satellites patchedorbit constraint conditions
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