DocumentCode :
1762127
Title :
Detection of Partially Coherent Scatterers in Multidimensional SAR Tomography: A Theoretical Study
Author :
Pauciullo, Antonio ; De Maio, A. ; Perna, Stefano ; Reale, Diego ; Fornaro, Gianfranco
Author_Institution :
Ist. per il Rilevamento Elettromagnetico dell´Ambiente, Naples, Italy
Volume :
52
Issue :
12
fYear :
2014
fDate :
Dec. 2014
Firstpage :
7534
Lastpage :
7548
Abstract :
Multidimensional synthetic aperture radar (SAR) imaging is a technique based on coherent SAR data combination for space (full 3-D) and space/deformation-velocity (4-D) analysis. It extends SAR interferometry and differential interferometry concepts, offering new options for the analysis and monitoring of ground scenes. In this paper, we consider the problem of detecting scatterers showing partial correlation properties induced by simultaneous acquisitions from satellite formations or an uneven temporal distribution of satellite constellations. To this end, we first provide a general model for the pixel imaged by a multidimensional SAR system. Then, we design a constant false alarm rate (CFAR) decision rule accounting for the presence of partially coherent scatterers. At the analysis stage, we assess the performance of the new detector also in comparison with a previously proposed CFAR scheme, developed in the context of SAR tomography for fully coherent scatterers.
Keywords :
radar detection; radar imaging; radar interferometry; spaceborne radar; synthetic aperture radar; 4D analysis; CFAR decision rule; SAR interferometry; coherent SAR data combination; constant false alarm rate decision rule; differential interferometry concept; multidimensional SAR system; multidimensional SAR tomography; partial correlation property; partially coherent scatterer detection; satellite constellation; satellite formation acquisition; space full 3-D analysis; space-deformation-velocity analysis; synthetic aperture radar imaging; temporal distribution; Clutter; Coherence; Correlation; Decorrelation; Detectors; Synthetic aperture radar; Vectors; Fully coherent; SAR tomography; multidimensional SAR imaging; partially coherent; scatterer detection; synthetic aperture radar (SAR);
fLanguage :
English
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
Publisher :
ieee
ISSN :
0196-2892
Type :
jour
DOI :
10.1109/TGRS.2014.2313703
Filename :
6807810
Link To Document :
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