Title :
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
fDate :
7/1/1994 12:00:00 AM
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;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
