Multiresolution signal representation for phase unwrapping and interferometric SAR processing

Author

Bamler, Richard ; Davidson, Gordon W.

Author_Institution

German Aerosp. Res. Establ., Oberpfaffenhofen, Germany

Volume

2

fYear

1997

fDate

3-8 Aug 1997

Firstpage

865

Abstract

Phase unwrapping requires-implicitly or explicitly-phase gradient estimates for phase reconstruction. An asymptotically unbiased local frequency estimator based on multiresolution signal representation is presented. The proposed estimator is able to automatically trade-off resolution against estimation error. It is shown that interferometric SAR processing can be improved by employing a smoothed version of the unwrapped phase. Particularly, a novel method for slope-adaptive spectral shift filtering is introduced

Keywords

geodesy; geophysical signal processing; geophysical techniques; radar imaging; remote sensing by radar; signal representation; synthetic aperture radar; topography (Earth); INSAR; asymptotically unbiased local frequency estimator; geodesy; geophysical measurement technique; interferometric SAR; land surface topography; multiresolution signal representation; phase gradient estimate; phase reconstruction; phase unwrapping; radar imaging; radar remote sensing; slope-adaptive spectral shift filtering; synthetic aperture radar; terrain mapping; Autocorrelation; Decorrelation; Frequency estimation; Histograms; Phase estimation; Phase noise; Robustness; Signal representations; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International

Print_ISBN

0-7803-3836-7

Type

conf

DOI

10.1109/IGARSS.1997.615281

Filename

615281