Title :
Layover solution in multibaseline InSAR using interpolated arrays
Author :
Bordoni, F. ; Jakobsson, A. ; Lombardini, F. ; Gini, F.
Author_Institution :
Dept. of "Ingegneria dell\´\´Informazione", Pisa Univ., Italy
Abstract :
This work deals with the problem of direction of arrival estimation of interferometric synthetic aperture radar (InSAR) signals in presence of layover. The focus is on realistic acquisition systems with a low number of phase centres and nonuniform array geometry. An interpolated array approach is proposed, in order to apply spectral estimation techniques designed for uniform linear arrays. In particular, interpolated MUSIC and weighted subspace fitting (WSF) algorithms are developed and investigated.
Keywords :
array signal processing; direction-of-arrival estimation; electromagnetic wave interferometry; linear antenna arrays; radar antennas; radar signal processing; synthetic aperture radar; MUSIC; WSF; direction of arrival estimation; interferometric synthetic aperture radar; interpolated array approach; multibaseline InSAR signal; nonuniform array geometry; realistic acquisition system; spectral estimation technique; uniform linear array; weighted subspace fitting algorithm; Direction of arrival estimation; Geometry; Interpolation; Multiple signal classification; Phased arrays; Signal resolution; Spatial resolution; Speckle; Synthetic aperture radar; Synthetic aperture radar interferometry;
Conference_Titel :
Signal Processing and Information Technology, 2004. Proceedings of the Fourth IEEE International Symposium on
Print_ISBN :
0-7803-8689-2
DOI :
10.1109/ISSPIT.2004.1433715
