Title :
Maximum likelihood estimation of SAR Azimuth Antenna by means of Persistent Point Scatterers
Author :
Guccione, Pietro ; Guarnieri, Andrea Monti
Author_Institution :
Dipt. di Elettrotec. ed Elettron., Politec. di Bari, Bari, Italy
Abstract :
The purpose of the paper is to estimate the Azimuth Antenna Pattern by using Persistent Point Scatterers (PPS) selected in a stack of interferometric Synthetic Aperture Radar images. Wide angle antenna pattern is estimated from targets spectra by means of a Maximum Likelihood formulation. PPS are considered a restricted subset of the Persistent Scatterers, for which the point-shape feature is further required. A model for PPS is provided and experimentally validated; antenna estimation results are presented for both simulated and real X-band Cosmo Skymed data.
Keywords :
antenna radiation patterns; geophysical techniques; maximum likelihood estimation; radar antennas; radar imaging; radar interferometry; remote sensing by radar; synthetic aperture radar; PPS; SAR azimuth antenna; X-band Cosmo Skymed data; antenna estimation; interferometric synthetic aperture radar image; maximum likelihood estimation; maximum likelihood formulation; persistent point scatterers; point-shape feature; wide angle antenna pattern; Abstracts; Antennas; Azimuth; Indexes; Azimuth Antenna Estimation; Maximum Likelihood; Persistent Point Scatterers; Spotlight SAR focusing;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6352362
