Title :
An interferometric quick-look processor
Author :
Guarnieri, A. Monti ; Prati, C.
Author_Institution :
Dipt. di Elettronica, Politecnico di Milano, Italy
fDate :
3/1/1999 12:00:00 AM
Abstract :
A technique to get medium resolution (40×40 m, on the ground), strip-map synthetic aperture radar (SAR) interferograms and coherence maps close to real-time by means of common UNIX workstations or PCs is presented. The requested efficiency is achieved by the following: 1) exploiting the spectral shift principle to reduce the data rate at the cost of some signal loss; 2) exploiting polyphase filters and integer implementation to get azimuth looks; 3) implementing a fast and robust estimator of coregistering parameters based both on amplitude cross correlation and of looks´ phase mismatch estimate
Keywords :
geophysical signal processing; geophysical techniques; geophysics computing; radar imaging; remote sensing by radar; software tools; synthetic aperture radar; terrain mapping; PC; SAR; UNIX workstation; amplitude cross correlation; azimuth look; coherence map; coregistering parameters; data rate reduction; geophysical measurement technique; integer implementation; interferogram; interferometric quick-look processor; land surface; look phase mismatch estimate; medium resolution; polyphase filter; radar imaging; radar remote sensing; robust estimator; spectral shift principle; strip-map; synthetic aperture radar; terrain mapping; Amplitude estimation; Azimuth; Costs; Filters; Parameter estimation; Personal communication networks; Phase estimation; Robustness; Synthetic aperture radar; Workstations;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
