The wavenumber shift in SAR interferometry

Author

Gatelli, F. ; Monti Guamieri, A. ; Parizzi, F. ; Pasquali, P. ; Prati, C. ; Rocca, F.

Author_Institution

Dipartimento di Elettronica, Politecnico di Milano, Italy

Volume

32

Issue

4

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

855

Lastpage

865

Abstract

SAR surveys from separate passes show relative shifts of the ground wavenumber spectra that depend on the local slope and the off-nadir angle. The authors discuss the exploitation of this spectral shift for different applications: 1) generation of "low noise" interferograms benefiting phase unwrapping, 2) generation of quick-look interferograms, 3) decorrelation reduction by means of tunable SAR systems (TINSAR), 4) range resolution enhancement, and 5) the combination of SAR data gathered by different platforms (airborne and satellite) for a "long-time coherence" study.<>

Keywords

geophysical techniques; remote sensing by radar; synthetic aperture radar; SAR inferometry; TINSAR; decorrelation reduction; geophysical measurement technique; ground wavenumber spectra; land surface; local slope; low noise interferogram; off-nadir angle; phase unwrapping; quick-look interferogram; radar imaging; range resolution enhancement; relative shift; remote sensing; spectral shift; terrain mapping; wavenumber shift; Bandwidth; Decorrelation; Interferometry; Laboratories; Noise generators; Phase noise; Propulsion; Remote sensing; Satellites; Volcanoes;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.298013

Filename

298013