The SqueeSAR approach allows to jointly process PS and DS. For each DS, the coherence matrix is “squeezed” to pass from N(N-1)/2 interferograms to N “optimum” phase values. In order to retrieve a time series of displacement values for each DS, it is however important to have a “connected path” from the first to the last acquisition of the dataset, via high-coherence interferograms. In this paper we show how to overcome this limit in order to estimate high precision DEM fort he so called TCS (Temporary Coherent Scatterer) by means of a Maximum Likelihood estimator.

Advances in SqueeSAR™ analysis

FERRETTI, ALESSANDRO;PRATI, CLAUDIO MARIA;ROCCA, FABIO
2012

Abstract

The SqueeSAR approach allows to jointly process PS and DS. For each DS, the coherence matrix is “squeezed” to pass from N(N-1)/2 interferograms to N “optimum” phase values. In order to retrieve a time series of displacement values for each DS, it is however important to have a “connected path” from the first to the last acquisition of the dataset, via high-coherence interferograms. In this paper we show how to overcome this limit in order to estimate high precision DEM fort he so called TCS (Temporary Coherent Scatterer) by means of a Maximum Likelihood estimator.
Synthetic Aperture Radar, 2012. EUSAR. 9th European Conference on
9783800734047
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/766879
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