A simulation study for anticipated accuracy of lunar gravity field model by SELENE tracking data

作者：Matsumoto Koji^*; Hanada Hideo; Namiki Noriyuki; Iwata Takahiro; Goossens Sander; Tsuruta Seiitsu; Kawano Nobuyuki; Rowlands David D

来源：Advances in Space Research, 2008, 42(2): 331-336.

DOI：10.1016/j.asr.2007.03.066

• lunar gravity field recovery
• SELENE
• 4-way Doppler measurement
• differential VLBI

Results of numerical simulations are presented to examine the global gravity field recovery capability of the Japanese lunar exploration project SELENE (SELenological and ENgineering Explorer) which will be launched in 2007. New characteristics of the SELENE lunar gravimetry include 4-way satellite-to-satellite Doppler tracking of main orbiter and differential VLBI tracking of two small free-flier satellites. It is shown that the proposed satellite constellation will provide the first truly global satellite tracking data coverage. The expected results from these data are; (1) drastic reduction in far-side gravity error, (2) estimation of many gravity coefficients by the observation, not by a priori information, and (3) one order of magnitude improvement over existing gravity models for low-degree field.

• 出版日期2008-7-15
• 单位中国科学院国家天文台