Analysis on the effect of calibration of satellite accelerometers on smooth GRACE orbit dynamics

GAO Songtao; YOU Wei; FAN Dongming; YU Biao; SHENG Yongyun

doi:10.13442/j.gnss.1008-9268.2020.06.005

Volume 45 Issue 6

Dec. 2020

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Article Navigation > GNSS World of China > 2020 > 45(6): 27-36

GAO Songtao, YOU Wei, FAN Dongming, YU Biao, SHENG Yongyun. Analysis on the effect of calibration of satellite accelerometers on smooth GRACE orbit dynamics[J]. GNSS World of China, 2020, 45(6): 27-36. doi: 10.13442/j.gnss.1008-9268.2020.06.005

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Analysis on the effect of calibration of satellite accelerometers on smooth GRACE orbit dynamics

doi: 10.13442/j.gnss.1008-9268.2020.06.005

1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China;
2. Guangdong Province Communications Planning & Design Institute Co., Ltd, Guangzhou 510507, China

Received Date: 2020-04-24
Available Online: 2021-04-09

Abstract

Abstract

This paper takes the GRACE satellite reduced kinetic orbit published by JPL and the geometric orbit published by ITSG as observations, respectively. The influence of Calibration of onboard accelerometers on track smoothing results is studied by dynamic method. The arc length is fixed to 24 hours. The results show that the accuracy of the integral orbit can be improved by using the-first-order bias estimation strategy with 15-minute and the diagonal filling strategy of the scale model. The RMS values in X direction, Y direction and Z direction are 1.89 cm、1.76 cm and 1.56 cm, respectively.
- dynamics,
- scale parameters,
- deviation parameters,
- estimated time,
- GRACE

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Analysis on the effect of calibration of satellite accelerometers on smooth GRACE orbit dynamics

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