LAUSR

Launched in June 2019, the Radarsat constellation mission (RCM) has the ability to acquire quad-pol polarimetric SAR (PolSAR) data globally. By applying polarimetric optimization on interferograms with PolSAR images, the polarimetric persistent interferometry techniques can achieve ground deformation results better than persistent scatter InSAR (PSI). However, to the best of our knowledge, there are very few published studies about RCM PSI applications, and the polarimetric PSI (PolPSI) ones have never been reported. This letter reports for the first time the PolPSI results with the quad-pol RCM data over an urban area. The quality of interferometric phases can be significantly improved with the polarimetric optimizations, resulting in better ground deformation monitoring results with PolPSI than with PSI. Very similar ground deformation has been retrieved with Sentinel-1 data over the same area, where more details are provided with the RCM data, validating the correctness of the RCM (Po)PSI results. The results demonstrate the effectiveness of this new synthetic aperture radar (SAR) satellite constellation on PSI and PolPSI applications.