Strategies for non-linear deformation estimation from interferometric stacks

Conference paper (2001)

Authors

BM Kampes Physical Space Geodesy

R.F. Hanssen Mathematical Geodesy and Positioning -

L.M.T. Swart Mathematical Geodesy and Positioning -

Research Group

Mathematical Geodesy and Positioning () (TU Delft)

More Info

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Published Date

01-12-2001

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Geoscience and Remote Sensing

Research Group

Mathematical Geodesy and Positioning

Abstract

A testing procedure is presented to estimate topography and deformation parameters from an interferometric stack (a number of reference phase corrected interferograms w.r.t. the same master image). A subset of pixels exhibit coherent phase in time, and a time series of phase differences between pairs of these pixels allows to set up a system of equations. A null hypothesis of zero deformation can be tested against alternative hypotheses, specifying linear and non-linear deformation. The covariance matrix of the phase differences accounts for phase noise, atmospheric effects, and orbit inaccuracies.