基于同波束VLBI差分相时延的“玉兔”月球车动作监视分析
发布时间：2019-05-08 20:27
【摘要】：2013年12月14日嫦娥三号成功在虹湾着陆区软着陆,后续开展两器分离、两器互拍等任务.本文利用同波束VLBI技术同时观测着陆器和月球车发射的信号,解算含整周模糊度的差分相时延(Differential Phase Delay),监视着陆器和月球车两器分离和两器互拍等过程的月球车各种动作.同时,研究和分析月球车行走、转弯、晃动、高程变化等动作导致的差分相时延变化,发现同波束VLBI差分相时延监视月球车动作的灵敏度在50 100 mm之间,后续利用差分相时延变化趋势进行相对定位.同波束VLBI技术在后续的探月三期、火星探测、金星探测等双目标、多目标探测中也将发挥重要作用.
[Abstract]:Chang'e-3 successfully landed in Hongwan landing area on December 14, 2013. In this paper, the same beam VLBI technique is used to observe the signals transmitted by the lander and the rover at the same time, and the differential phase delay (Differential Phase Delay), with integer ambiguity is used to solve the various motions of the lunar rover during the separation of the lander and the Lunar rover, and the mutual racquet between the two rovers. At the same time, the difference phase delay caused by the motion of walking, turning, sloshing and elevation change of the rover is studied and analyzed. It is found that the sensitivity of the same beam VLBI differential phase delay monitoring lunar rover movement is between 50 and 100 mm. Later, the variation trend of differential phase delay is used for relative positioning. The same beam VLBI technology will also play an important role in the follow-up lunar exploration phase III, Mars exploration, Venus exploration and other dual targets, multi-target exploration will also play an important role.
【作者单位】： 中国科学院上海天文台;中国科学院大学;
【基金】：国家自然科学基金(批准号:11273049) 国家高技术研究发展计划项目(编号:2012AA121203) 上海市导航与定位重点实验室(编号:3912D Z227330001) 中国科学院行星科学重点实验室(编号:2013DP173302)
【分类号】：P184.5;V476.3
本文编号：2472196
[Abstract]:Chang'e-3 successfully landed in Hongwan landing area on December 14, 2013. In this paper, the same beam VLBI technique is used to observe the signals transmitted by the lander and the rover at the same time, and the differential phase delay (Differential Phase Delay), with integer ambiguity is used to solve the various motions of the lunar rover during the separation of the lander and the Lunar rover, and the mutual racquet between the two rovers. At the same time, the difference phase delay caused by the motion of walking, turning, sloshing and elevation change of the rover is studied and analyzed. It is found that the sensitivity of the same beam VLBI differential phase delay monitoring lunar rover movement is between 50 and 100 mm. Later, the variation trend of differential phase delay is used for relative positioning. The same beam VLBI technology will also play an important role in the follow-up lunar exploration phase III, Mars exploration, Venus exploration and other dual targets, multi-target exploration will also play an important role.
【作者单位】： 中国科学院上海天文台;中国科学院大学;
【基金】：国家自然科学基金(批准号:11273049) 国家高技术研究发展计划项目(编号:2012AA121203) 上海市导航与定位重点实验室(编号:3912D Z227330001) 中国科学院行星科学重点实验室(编号:2013DP173302)
【分类号】：P184.5;V476.3
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