DESIGN OF FILTERING METHOD OF GOCE GRAVITY GRADIENT
AND ANALYSIS OF RESULT
1）Qingdao Agriculture University，Qingdao 266109
Abstract For the reason that GOCE gravity gradients is impacted badly by low frequency error，three filtered methods were designed based on the spectral characteristics of GOCE gravity gradients.The best method was choosed through comparison of the results with the three methods.The method was applied to filter 70 days gravity gradients between 2009-11-02—2010-01-10.An Earth’s gravity field model with 200 degree and order was reconstructed based on 70 days filtered gravity gradients.The results show that reconstruction of model have to be processed with regularization.The precision of the regularized model is consistant with that of GO_CONS_GCF_2_TIM_R3 with 160 degrees.The results prove that the designed method can filter gravity gradients successfully.
Key words ：
GOCE
gravity gradients
low frequency error
fast Fourier transform
band pass filter
Received: 23 August 2013
Published: 28 May 2014
Cite this article:
Yang Hongguo,Huang Qiang. DESIGN OF FILTERING METHOD OF GOCE GRAVITY GRADIENT
AND ANALYSIS OF RESULT[J]. jgg, 2014, 34(3): 146-150.
Yang Hongguo,Huang Qiang. DESIGN OF FILTERING METHOD OF GOCE GRAVITY GRADIENT
AND ANALYSIS OF RESULT[J]. jgg, 2014, 34(3): 146-150.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2014/V34/I3/146
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