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深空微波测距测速现状及发展建议
徐茂格, 施为华
中国西南电子技术研究所, 成都 610036
摘要:
研究了国外深空测控无线电测距和测速的最新进展,包括欧洲空间局(European Space Agency,ESA)和美国航空航天局(National Aeronautics and Space Administration,NASA)的深空测控系统测量精度提升计划。结合总体单位的X频段试验测试数据,分析了目前我国深空测控系统无线电测距测速现状,从测量设备层面以及空间传输等方面,包括目前深空站采用的超窄带锁相环以及提高到500 kHz的测距主音等措施,对测距测速的误差源进行了分析,探讨了测距和测速精度提升的主要制约因素。结合我国深空测控系统发展规划,给出了后续深空测控无线电测量的发展建议,结合相关课题研究成果,重点分析了多频链路和实时标校技术的可行性及具体效果。
关键词:  深空探测;测控系统;高精度测量
DOI:10.15982/j.issn.2095-7777.2018.02.005
分类号:V443+.1
基金项目:
Development of Deep Space Radio Ranging and Velocity Measurement Technology
XU Maoge, SHI Weihua
Southwest China Institute of Electronic Technology, Chengdu 610036, China
Abstract:
The recent research progress of the deep space radio ranging and velocity measurement technology, including the ESA and NASA measurement accuracy improvement plan is introduced. Based on the X frequency band experimental data,using the extreme narrow phase-locked loop(PLL)and the 500 kHz ranging tone,the current situation of ranging and velocity measurement of China's deep space tracking,telemetry and command(TT&C)system is analyzed. The main error budget is analyzed and the accuracy improvement suggestions are provided. According to the deep space exploration program,the proposal of deep space measurement technology is presented,particularly the analyses of multi-frequency link scheme and the station delay bias online monitoring are given.
Key words:  deep space exploration;TT&C system;high-accuracy measurement