Research on Tropospheric Delay Modeling in Regional CORS Considering Residual Interpolation Compensation
In view of the spatial interpolation problem when using GPS data to correct the atmospheric error of InSAR,this paper uses the SCIGN network observation data of South-ern California to verify the accuracy of several troposphere de-lay interpolation models that take into account topographical factors,and the method of using the interpolation of the model residual to compensate the model's own error is put forward,At the same time,the power value of the weight in the residu-al inverse distance interpolation was studied. In the experi-ment,the residual interpolation compensation effect of the first three models is the best with setting the power of 1.5 or the power of 2. The compensation accuracy is of the sub-milli-meter level,and the EH1QX3 model is reversely corrected.
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