6Dong D N, Fang P, Bock Y, Webb F, Prawirodirdjo L, Kedar S, Jamason P. 2006. Spatiotemporal filtering using principal component analysis and Karhunen Loeve expansion approaches for regional GPS network analysis[J]. J Geophys Res, 111:B03405.
7Langbein J, Johnson H. 1997. Correlated error in geodetic time series: implications for time-dependent deformation [J]. J Geophys Res, 102(B1) : 591-604.
8Langbein J. 2004. Noise in two color electronic distance meter measurements revisited[J]. J Geophys Res, 109 : B04406.
9Langbein J. 2008. Noise in GPS displacement measurements from Southern California and Southern NevadaEJ~. J Geophys Res, 113: B05405.
10Mao A, Harrison C G A, Dixon T H. 1999. Noise in GPS coordinate time series[J].J Geophys Res, 104(B2) : 2797- 2816.