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CORRELATION ANALYSIS OF CONTINUOUS GPS HORIZONTAL DISPLACEMENT COMPONENTS

The GPS displacement data at different stations often fluctuated simultaneously, that is, there are many resemblances among different stations of same component. The shorter the distance, the higher the correlation coefficient among different stations is,it shows a liner relation between correlation coefficient and station distance. The possible reasons leading to the synchronization changes among different stations may be tectonic movement of a block as well as some errors induced by non-tectonic factors. The correlation coefficients had been lowered after reducing the common changes by Eulor vector transfer. The Eulor vector transfer is a better method to separate common movement and common mode errors from the GPS and reveals the relative different movement of each station.