Title :
Estimation of terrain elevation by multifrequency interferometric wide band SAR data
Author :
Pascazio, Vito ; Schirinzi, Gilda
Author_Institution :
Ist. di Teoria e Technica della Onde Elettromagnetiche, Ist. Univ. Navale via Acton, Napoli, Italy
Abstract :
We present a phase unwrapping method using a maximum likelihood estimation technique together with frequency diversity information to reconstruct highly discontinuous ground elevation profiles. Frequency diversity can be obtained by considering the interferograms obtained by different couples of subband images.
Keywords :
maximum likelihood estimation; radar imaging; radiowave interferometry; signal reconstruction; synthetic aperture radar; SAR data; frequency diversity information; highly discontinuous ground elevation profiles; interferograms; maximum likelihood estimation; multifrequency interferometric wide band radar; phase unwrapping method; radar interferometry; subband images; synthetic aperture radar; terrain elevation estimation; Decorrelation; Frequency diversity; Frequency estimation; Image reconstruction; Maximum likelihood estimation; Phase estimation; Phase measurement; Phase noise; Synthetic aperture radar; Wideband;
Journal_Title :
Signal Processing Letters, IEEE
