月球探测器天文测角/单程无线电时间差分测距/差分测速导航方法

doi:10.7527/S1000-6893.2020.24531

Abstract

Abstract: The high-precision navigation technology of the lunar probe is one of the key technologies to ensure the smooth implementation of the lunar exploration mission. Currently, most lunar probes depend on ground radio station for navigation and control, but have some limitations such as short measurable and controllable arcs and susceptibility to interferences. In addition, for the detection of the back of the moon, the lunar probes such as Chang'e-4 cannot be directly measured and controlled. To solve the above problems, a new integrated navigation method is proposed for the lunar probe. This method uses three types of measurement information:celestial angle measurement, one-way radio time-differenced distance measurement received from the ground station or relay satellite by the probe, and time-differenced Doppler velocity measurement. The method can effectively suppress the time and frequency measurement errors of the on-board clock and spectrum analyzer. The simulation analysis results show that the average position and velocity estimation errors after convergence of the method are 902.7 m and 0.12 m/s, respectively, and the maximum position and velocity estimation errors are 1548.2 m and 0.24 m/s, respectively, which means that this method has high autonomous navigation accuracy.

Key words: navigation of lunar exploration, celestial angle measurement, time difference, radio distance and velocity measurement, integrated navigation

CLC Number:

V448.21

NING Xiaolin, LIANG Xiaoyu, WU Weiren, FANG Jiancheng. Lunar probe navigation based on celestial angle measurement, one-way radio time-differenced distance and time-differenced velocity measurement[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(11): 524531-524531.

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Lunar probe navigation based on celestial angle measurement, one-way radio time-differenced distance and time-differenced velocity measurement

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