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该文给出了GRACE卫星星载加速仪资料的一种快速校标方法,以单天GRACE卫星快速轨道直接校标加速仪的结果为基础,联合多个单天法方程进行二次校标,其中多天只解算1组共同的尺度因子,而线性偏差每个单天解算1组,以求消弱尺度因子和线性偏差的相关性,得到更加稳定的结果.同时还利用GRACE的A/B双星共轨的特点,进行了两星阻力测量资料之间的对比验证,证实了结果的有效性.
In this paper, a fast calibration method of GRACE satellites satellite accelerometer is presented. Based on the results of a single day GRACE satellite orbiter, One group only solves a group of common scale factors for many days, and the linear deviation solves one group for each single day in order to weaken the correlation between scale factors and linear deviations to obtain more stable results.At the same time, using GRACE’s A / B dual-star common rail characteristics, conducted a two-star comparison between the resistance measurement data to verify the validity of the results.