Visser P N A M
Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands.
J Geod. 2018;92(8):833-846. doi: 10.1007/s00190-017-1097-8. Epub 2017 Dec 8.
A method for validating the calibration parameters of the six accelerometers on board the Gravity field and steady-state Ocean Circulation Explorer (GOCE) from star tracker observations that was originally tested by an end-to-end simulation, has been updated and applied to real data from GOCE. It is shown that the method provides estimates of scale factors for all three axes of the six GOCE accelerometers that are consistent at a level significantly better than 0.01 compared to the a priori calibrated value of 1. In addition, relative accelerometer biases and drift terms were estimated consistent with values obtained by precise orbit determination, where the first GOCE accelerometer served as reference. The calibration results clearly reveal the different behavior of the sensitive and less-sensitive accelerometer axes.
一种从星跟踪器观测结果验证重力场和稳态海洋环流探测卫星（GOCE）上六个加速度计校准参数的方法，最初通过端到端模拟进行了测试，现已更新并应用于GOCE的实际数据。结果表明，与先验校准值1相比，该方法提供的六个GOCE加速度计所有三个轴的比例因子估计值一致性显著优于0.01。此外，相对加速度计偏差和漂移项的估计值与通过精密轨道确定获得的值一致，其中第一个GOCE加速度计用作参考。校准结果清楚地揭示了灵敏和不太灵敏的加速度计轴的不同行为。
