Progressive InSAR phase estimation

Abstract

This paper introduces a novel scheme to progressively estimate interferometric phases from a stack of synthetic aperture radar (SAR) images. The scheme is shown to yield comparable performance to full-covariance algorithms for a realistic decorrelation scenario. The implementation is suited for continuous processing and updating of phase products, without compromising long-term phase accuracy. It also limits the requirements in terms of data transfer between archive and processing facility, a significant issue for processing large archives of SAR data.