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面向绕月交会对接的同波束VLBI研究
任天鹏1,2, 唐歌实1,2, 许柏1, 路伟涛1,2, 陈略1,2, 韩松涛1,2, 王美1,2
1.北京航天飞行控制中心, 北京 100094;2.航天飞行动力学技术重点实验室, 北京 100094
摘要:
针对“ 嫦娥5号”(CE-5)探测器间高精度相对测量需求,设计了我国深空干涉测量处理中心框架下的同波束VLBI处理算法,分析了X波段同波束VLBI相位解模糊条件和结果;通过引入群时延辅助的相位干涉技术,大幅抑制了干涉时延随机误差,为同波束VLBI中相位解模糊提供了先验条件;利用CE-5对接实测数据验证了本文工作的有效性,为CE-5任务同波束VLBI的实施奠定了基础。
关键词:  同波束VLBI;交会对接;嫦娥5号;群时延辅助的相时延
DOI:10.15982/j.issn.2095-7777.2017.04.009
分类号:
基金项目:国家自然科学基金资助项目(11403001)
Same-Beam VLBI in Lunar Orbiter Rendezvous and Docking
REN Tianpeng1,2, TANG Geshi1,2, XU Bai1, LU Weitao1,2, CHEN Lue1,2, HAN Songtao1,2, WANG Mei1,2
1.Beijing Aerospace Control Center, Beijing 100094, China;2.Science and Technology on Aerospace Flight Dynamics Laboratory, Beijing 100094, China
Abstract:
To obtain a high precision relative measurement between the orbiter and the ascender of the CE-5 lunar probe, a same-beam VLBI algorithm is propsed in the framework of the deep-space interferometry processing center. The conditions and results of getting a right cycle ambiguity are discussed. After introducing the group-delay-aided phase interferometry,the random errors of interferometrical delay are suppressed greatly. It provides a priori condition for a right cycle ambiguity. Finally,the proposed algorithm is verified by using the CE-5 data,laying the foundation for the X-band same-beam VLBI in the CE-5 task.
Key words:  same-bean VLBI;rendezvous and docking;Chang'E-5(CE-5);group-delay-aided phase interferometry