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- W2359968983 abstract "A rapid and effective calibration method for CHAMP accelerometer is developed in this work,the rapid CHAMP orbits published by GFZ are used as observations,the in-orbit calibrated accelerometer observations are used to replace the non-gravitation,and the calibration parameters,include scales and biases in the xyz direction of instrument fixed system,are estimated in the process of precise orbit determination,and in the meantime of 6 initial orbit elements estimation. To improve the reliability of calibration,outlier eliminating and continuity selection are performed, and all the historical data of CHMP are processed.Basically the CHAMP orbits are retained from the orbit processing residuals,and the average of calibration parameters for first 100 days is very close to the official values.Moreover,the next day's orbits is used to show the validity of calibration parameters,the maximum difference in R direction is lower than 1m,and in N and T direction are about 3 m and 10 m respectively,it's a satisfied prediction for lower orbit satellite. The method is fast,for a single-day,it just takes no more than 2 minutes in a typical PC,and can give a pair of calibration parameters for every day,so it can help to improve the air drag model,and promote the study of short-term changes in atmosphere." @default.
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- W2359968983 date "2011-01-01" @default.
- W2359968983 modified "2023-09-23" @default.
- W2359968983 title "A Rapid and Effective Calibration Method for CHAMP Accelerometer" @default.
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