DocumentCode :
1674886
Title :
A statistical technique for phase unwrapping: application to InSAR data
Author :
Pascazio, Vito ; Schirinzi, Gilda
Author_Institution :
I.T.T.O.E.M., Universita di Napoli, Italy
Volume :
3
fYear :
2001
fDate :
6/23/1905 12:00:00 AM
Firstpage :
620
Abstract :
The purpose of the paper is to investigate the possibility of reconstructing high slope and discontinuous terrain height profiles, starting from more than one wrapped interferometric phase signals obtained at different working frequencies from interferometric SAR systems. We propose an unwrapping method, based on a maximum likelihood estimation technique, that approximates the unknown surface by means of local planes. Since it does not exploit at all the phase gradient, it assures the uniqueness of the solution, also in the case of piece-wise continuous elevation patterns with strong discontinuities
Keywords :
geophysical signal processing; image reconstruction; maximum likelihood estimation; piecewise constant techniques; radar imaging; radiowave interferometry; synthetic aperture radar; terrain mapping; InSAR data; discontinuous terrain height profiles; high slope reconstruction; interferometric SAR; interferometric phase signals; local planes; maximum likelihood estimation; phase gradient; phase unwrapping; piece-wise continuous elevation patterns; statistical technique; strong discontinuities; Electronic mail; Frequency diversity; Frequency estimation; Image reconstruction; Maximum likelihood estimation; Phase estimation; Phase measurement; Surface reconstruction; Synthetic aperture radar; Synthetic aperture radar interferometry;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
Type :
conf
DOI :
10.1109/ICIP.2001.958195
Filename :
958195
Link To Document :
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