Comparison on data processing methods of GPS regional network of monitoring deformation

In monitoring deformation of regional network,one of the most important problems is to obtain the precise position and velocity of monitoring points.In this paper,three data processing methods of monitoring deformation of regional network were analyzed,which are static adjustment,kinematic adjustment and Kalman filter respectively.If the influence of random error is ignored,the resolutions of three methods are equivalent;otherwise,if which is considered as a variable value,the resolutions of them are different.For validation of above analysis,some real GPS data were tested.The results showed that the resolution precision of Kalman filter with Helmert variance estimation would be better than those of other methods under some condition.