Title :
On the Effects of Nonuniform Sampling for Interferometric Phase Estimation in the Presence of Layover
Author :
Bordoni, F. ; Jakobsson, A. ; Gini, F. ; Lombardini, F.
Author_Institution :
Dept. of "Ingegneria dell\´\´Informazione", Pisa Univ.
Abstract :
This work tackles the problem of interferometric phase estimation in the presence of layover by using nonuniform multibaseline interferometric synthetic aperture radar systems. The effects of nonuniform sampling on Fourier-based and superresolution spectral estimation methods are investigated. The impact on both the spectral properties and on the interferometric phase estimation performance is considered. The analysis of interferometric phase estimation performance is based on Monte Carlo simulations, comparing with the corresponding Cramer Rao lower bound. The focus is on realistic single-pass acquisition systems with a low number of phase centers and a nonuniform linear array structure
Keywords :
Fourier analysis; Monte Carlo methods; electromagnetic wave interferometry; linear antenna arrays; phase estimation; radar antennas; radar detection; radar resolution; signal sampling; spectral analysis; synthetic aperture radar; Fourier-based technique; Monte Carlo simulation; interferometric phase estimation; linear array structure; nonuniform sampling; realistic single-pass acquisition system; superresolution spectral estimation method; synthetic aperture radar system; Geometry; Multiple signal classification; Nonuniform sampling; Phase estimation; Phased arrays; Sampling methods; Signal resolution; Spatial resolution; Speckle; Synthetic aperture radar interferometry;
Conference_Titel :
Statistical Signal Processing, 2005 IEEE/SP 13th Workshop on
Conference_Location :
Novosibirsk
Print_ISBN :
0-7803-9403-8
DOI :
10.1109/SSP.2005.1628674
