Are measured InSAR displacements a function of the chosen processing method?

The benefits of InSAR to the civil engineering industry have been demonstrated on many occasions, however there is still a limited uptake by end-users, due perceived differences between data providers and uncertainty around how interpret results. This paper critically compares three datasets for London: Radarsat-2 (RS2) from 2011 2015, TerraSAR-X (TSX) 2017, Sentinel-1 (STL1) 2015 2017. Two (TSX & RS2) were processed commercial providers, while STL1 using ENVI ® SARscape authors. results show an inverse relationship Pearson Correlation Coefficient absolute total displacement Persistent Scatterers (PS). There strong correlation greater than 5 mm, but weak or no in 0–3 mm range. Consequently, standard datasets, with priori knowledge area interest, error margins below 3–5 correctly detect all deformation phenomena exceeding this threshold. RS2-TSX both capture spatial extent investigated dewatering induced subsidence, measures much broader, less pronounced zone heave TSX. Thematic collection: article part Remote sensing site investigations Earth other planets collection available at: https://www.lyellcollection.org/cc/remote-sensing-for-site-investigations-on-earth-and-other-planets