[1] Zhao Liye, Li Hongsheng, Zhou Bailing, Li Kunyu, et al. Cascade Kalman filter for gravity anomaly distortion correctionbased on second order potential model [J]. Journal of Southeast University (English Edition), 2008, 24 (4): 482-486. [doi:10.3969/j.issn.1003-7985.2008.04.017]

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Cascade Kalman filter for gravity anomaly distortion correctionbased on second order potential model()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

24

Issue:

2008 4

Page:

482-486

Research Field:

Instrument Science and Technology

Publishing date:

2008-12-30

Info

Title:

Cascade Kalman filter for gravity anomaly distortion correctionbased on second order potential model

Author(s):

Zhao Liye;  Li Hongsheng;  Zhou Bailing;  Li Kunyu

School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China

Keywords:

gravimeter;  gravity anomaly;  cascade Kalman filter;  inverse Kalman filter;  distortion correction

PACS:

U666.1

DOI:

10.3969/j.issn.1003-7985.2008.04.017

Abstract:

Using a gravity anomaly covariance function based on the second-order Gaussian Markov gravity anomaly potential model, the state equation of a gravity anomaly signal is obtained in marine gravimetry.Combined with the system state equation and the measurement equation, a new method of the cascade Kalman filter is proposed and applied to the correction of gravity anomaly distortion.In the signal processing procedure, an inverse Kalman filter is used to restore the gravity anomaly signal and high frequency noises first. Then an adaptive Kalman filter, which uses the gravity anomaly state equation as the system equation, is set to estimate the actual gravity anomaly data.Emulations and experiments indicate that both the cascade Kalman filter method and the single inverse Kalman filter method are effective in alleviating the distortion of the gravity anomaly signal, but the performance of the cascade Kalman filter method is better than that of the single inverse Kalman filter method.

References:

[1] Xu Zunyi, Yan Lei, Ning Shunian, et al.Situation and development of marine gravity aided navigation system[J].Progress in Geophysics, 2007, 22(1):104-111.
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[5] Wang Jiandi.Elimination of the distortion in dynamic gravimetry using Kalman inverse filter[J].Acta Geodartica et Geophysica, 1991, 12:57-69.(in Chinese)
[6] Qi Honghui, Moore J B.Direct Kalman filtering approach for GPS/INS integration[J].Aerospace and Electronic Systems, 2002, 38(2):687-693.
[7] Grewal Mohinder S, Andrews Angus P.Kalman filtering:theory and practice using Matlab[M].2nd ed.John Wiley & Sons, Inc., 2001.
[8] Bozic S M.Digital and Kalman filtering[M].Translated by Ling Yundan.Beijing:Science Press, 1984.(in Chinese)
[9] Weng Shiuh-Ku, Kuo Chung-Ming, Tu Shu-Kang.Video object tracking using adaptive Kalman filter[J].Journal of Visual Communication and Image Representation, 2006, 17(6):1190-1208.

Memo

Memo:

Biographies: Zhao Liye(1977—), male, doctor, lecturer, nanjingseuzly@163.com;Li Hongsheng(corresponding author), male, doctor, professor, hsli@seu.edu.cn.
Foundation items: Pre-Research Program of General Armament Department during the 11th Five-Year Plan Period(No.51309010201), the National Natural Science Foundation of China(No.60575010).
Citation: Zhao Liye, Li Hongsheng, Zhou Bailing, et al.Cascade Kalman filter for gravity anomaly distortion correction based on second order potential model[J].Journal of Southeast University(English Edition), 2008, 24(4):482-486.

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