Abstract
The technique of InSAR have great potential in detecting displacements caused by ground subsidence which sometimes can't be achieved by other methods.But the application and accuracy of InSAR will be influenced because of its some inherent factors and variations of ground plant,humidity and atmosphere at different time.Meanwhile,application of GPS to measures land deformation has become an efficiently and accurately measuring technology.GPS-InSAR integration can enhance the ability of measuring land deformation in both temporal and spatial resolution;it is becoming an emphasis of land subsidence investigation.This paper introduces firstly the complement of the InSAR and GPS.Then,the approach to derive atmospheric corrections to the InSAR images from CGPS datas and the method to remove or mitigate SAR satellite orbit errors using GPS results as constraints are analyzed.Finally,the Double Interpolation and Double Prediction(DIDP) approach for integrating InSAR and GPS results is given.
Published Version
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