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Topography and displacement of polar glaciers from multi-temporal SAR interferograms

Published online by Cambridge University Press:  01 October 2007

Franz J. Meyer
Franz J. Meyer*
Affiliation:
Remote Sensing Technology Institute, German Aerospace Centre (DLR), Oberpfaffenhofen, D-82234 Wessling, Germany
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Abstract

This paper describes a new technique simultaneously to estimate topography and motion of polar glaciers from multi-temporal SAR interferograms. The approach is based on a combination of several SAR interferograms in a least-squares adjustment using the Gauss-Markov model. For connecting the multi-temporal data sets, a spatio-temporal model is proposed that describes the properties of the surface and its temporal evolution. Rigorous mathematical modelling of functional and stochastic relations allows for a systematic description of the processing chain. It is also an optimal tool to set parameters for the statistics of every individual processing step, and the propagation of errors into the results. Within the paper theoretical standard deviations of the unknowns are calculated depending on the configuration of the data sets. The influence of gross errors in the observations and the effect of non-modelled error sources on the unknowns are estimated. A validation of the approach based on real data concludes the paper.

Type
Articles
Information
Polar Record , Volume 43 , Issue 4 , October 2007 , pp. 331 - 343
Copyright
Copyright © Cambridge University Press 2007

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