Atmospheric effects on Ground-Based SAR interferometric measurements and their mitigation

Atmospheric disturbance can strongly influence the accuracy of Ground-Based synthetic aperture radar differential interferometry (GB-InSAR). In this paper, a comparison of different techniques for compensating the atmospheric artifacts in Ground-Based SAR is presented. The way the fluctuation of atmospheric parameters like temperature, pressure and humidity among successive scans affects interferometric phases is pointed out and some simple models are given to correct the error caused by atmospheric disturbance. Three alternative methods for the artifact removal are described and quantitatively compared using a reference dataset. The advantages and the limitations of each technique are finally drawn.