一种基于航天器通用下行信号相关处理的干涉测量方法及验证  

An Interferometry Method Based on Correlation of Universal Spacecraft Downlink Signal and Its Verification

作　　者：路伟涛[1,2] 陈略 任天鹏[1,2] 韩松涛 LU Weitao;CHEN Lve;REN Tianpeng;HAN Songtao(Beijing Aerospace Flight Control Center,Beijing 100094,China;Key Laboratory of Aerospace Flight Dynamics Technology,Beijing 100094,China)

机构地区：[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

出　　处：《载人航天》2020年第2期179-184,共6页Manned Spaceflight

基　　金：载人航天预先研究项目(060401)。

摘　　要：针对航天器未搭载干涉测量信标机的情况,提出了一种基于通用下行信号相关处理的干涉测量方法。首先分析了通用下行信号相关处理中载波重建、整周模糊解算和系统时延偏差估计等技术;然后,结合试验,针对某地球同步卫星下行信号特点,提出了一种递进解模糊的载波提取方法;最后,对同步卫星实测数据进行了处理,得到了1.03 ps量级的时延估计精度,验证了所提方法的有效性。The interferometry technology plays a significant role in orbit determination of spacecraft during deep space exploration.For the spacecraft without interferometry beacon,a method using the universal downlink signal of spacecraft for correlation was proposed.First,the related technologies including the carrier reconstruction,the carrier phase ambiguity resolving and the system delay estimation were analyzed.Then,an interferometry test scheme was established and a progressive ambiguity resolving method was proposed based on the downlink signal characteristic of the chosen GEO satellite.In the end,the measured data of the GEO satellite was processed and the accuracy of time delay was 1.03 ps.The effectiveness of the proposed method was verified.

关 键 词：干涉测量 通用下行信号 地球同步卫星 载波时延估计 

分 类 号：V11[航空宇航科学与技术—人机与环境工程]