We propose to use a mask with a nonredundant array (NRA) of multiple apertures to measure spatial coherence in two dimensions. The spatial distribution of the apertures in the mask is made in such a way that we obtain a quasi-uniform sampling in the coherence domain. The spatial coherence is obtained by Fourier transform of the interferogram generated by the mask when it is illuminated by the l...

Several geocoding methods for SAR interferometry are compared. The discussion results in the proposal of a new geocoding model. It is based on a least squares adjustment combining interferometric phase, range, Doppler centroid frequency, flight path and control point data. A complete mathematical framework for the computation of object space coordinates without approximations is presented. This...

SAR interferometry (InSAR) has emerged in the big-data era, particularly benefitting from acquisition capability and open-data policy of ESA’s Sentinel-1 mission. A large number images have been acquired archived, allowing for generation thousands interferograms, covering millions square kilometers. In such a large-scale scenario, many applications actually aim at monitoring localized deformati...

S U M M A R Y Studies of interseismic strain accumulation are crucial to our understanding of continental deformation, the earthquake cycle and seismic hazard. By mapping small amounts of ground deformation over large spatial areas, InSAR has the potential to produce continental-scale maps of strain accumulation on active faults. However, most InSAR studies to date have focused on areas where t...

We have derived an expression for the combined effects of a converging beam of light and mirror misalignment on the interferograms obtained with a Michelson interferometer. Each effect has been considered separately by others and leads to symmetric interferograms whose modulation is less than 100%. The combined effect produces an asymmetry in the interferogram as well as a decrease in the modul...

Differential Synthetic Aperture Radar Interferometry (DInSAR) represents nowadays a wellestablished remote sensing technique to generate spatially dense surface deformation maps of large areas on Earth (Massonnet & Feigl, 1999; Bürgmann et. al., 2000). To achieve this task, the phase difference (known as interferogram) between SAR data pairs related to temporally-separated observations is explo...