Research on Common Mode Error Extraction Method for Large-Scale GPS Network
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Abstract
Based on 138evenl y distributed IGS coordinate time series spanning more than 10years site -to-site coefficents in lar ge scale GPS network were anal yzed.Their site -to-site coefficients indicate si gnificant corelationshi p even when the between-site distance more than 5 000km.Thereforethis paper proposes a new method introducing coefficients as weight factor to calculate common mode errorand it improved the correlation-based spatial filterin g techni que.Time series from global and regional networks were used to verif y this new method.The results show that this improved coefficientbased spatial filterin g techni que overcomes the spatial scale limit and effectivel y extracts common mode error of GPS coordinates time series.
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