Data processing of shipborne absolute gravity measurement based on extended Kalman filter algorithm
نویسندگان
چکیده
The precision dynamic measurement of absolute gravity based on the cold atom interferometer can provide a new method for marine gravimetry, so that it has attracted more attention. Based homemade shipborne interferometric system, we carry out series experiments in certain area South China Sea. Under conditions, suppression noise is essential improvement performance. According to physical model this paper data processing proposed extended Kalman filter algorithm measurement. observed atomic interference fringe are filtered time domain estimate value. method, sensitivity under condition ship speed less than 2.1 km/h improved from 300.2 mGal/Hz<sup>1/2</sup> 136.8 (<i>T</i> = 4 ms). Comparing processed with calculated earth (XGM2019), found both good agreement. These results confirm effectiveness paper, and suppressing system.
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ژورنال
عنوان ژورنال: Chinese Physics
سال: 2022
ISSN: ['1000-3290']
DOI: https://doi.org/10.7498/aps.71.20220071