2007
DOI: 10.1007/s00190-007-0194-5
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Localized spectral analysis of global satellite gravity fields for recovering time-variable mass redistributions

Abstract: A spatiospectral localization method is discussed for processing the global geopotential coefficients from satellite mission data to investigate time-variable gravity. The time-variable mass variation signal usually appears associated with a particular geographical area yielding inherently regional structure, while the dependence of the satellite gravity errors on a geographical region is not so evident. The proposed localization amplifies the signal-to-noise ratio of the (non-stationary) time-variable signals… Show more

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Cited by 23 publications
(27 citation statements)
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“…A complementary measure is the degree variance of the gravity field solution in the presence of realistic noise. As the signals originate from a relatively small geographical region it is necessary to localise the signal and noise (Han and Simons, 2008;Han and Ditmar, 2008). In the terminology of Han and Ditmar (2008) the signal is non-stationary while the noise is more likely to be stationary.…”
Section: Secular Ice-mass Change Over Greenlandmentioning
confidence: 99%
See 3 more Smart Citations
“…A complementary measure is the degree variance of the gravity field solution in the presence of realistic noise. As the signals originate from a relatively small geographical region it is necessary to localise the signal and noise (Han and Simons, 2008;Han and Ditmar, 2008). In the terminology of Han and Ditmar (2008) the signal is non-stationary while the noise is more likely to be stationary.…”
Section: Secular Ice-mass Change Over Greenlandmentioning
confidence: 99%
“…As the signals originate from a relatively small geographical region it is necessary to localise the signal and noise (Han and Simons, 2008;Han and Ditmar, 2008). In the terminology of Han and Ditmar (2008) the signal is non-stationary while the noise is more likely to be stationary. Techniques of spatiospectral localization (Wieczorek and Simons, 2005) can enhance the signal as the effect decays rapidly outside the region of interest while the measurement errors are relatively uniform over the Earth.…”
Section: Secular Ice-mass Change Over Greenlandmentioning
confidence: 99%
See 2 more Smart Citations
“…Other authors have focused on improved analysis of available time-variable gravity field models, e.g. by mascon approach (Rowlands et al 2005), wavelets , spatiospectral localisation (Han and Ditmar 2008) or empirical orthogonal functions (Schmeer et al 2012). Note also that lots of studies have been done for regional gravity field recovery by inverting the satellite gradiometry data (see e.g.…”
Section: Introductionmentioning
confidence: 98%