Title :
A fast multilevel domain decomposition algorithm for radar imaging
Author_Institution :
Dept. of Electr. Eng., Tel Aviv Univ., Israel
fDate :
4/1/2001 12:00:00 AM
Abstract :
A novel algorithm for radar imaging is presented. The method comprises two steps. First, a decomposition of the radar data domain into subdomains and computation of pertinent low resolution images. Second, interpolation, phase correction and aggregation of the low resolution images into the final high resolution one. A multilevel algorithm is formulated via a recursive application of the domain decomposition and image aggregation steps. The computational cost of the proposed algorithm is comparable to that of the fast Fourier transform (FFT) based techniques while it appears to be considerably more flexible than the latter
Keywords :
image resolution; interpolation; radar imaging; radar resolution; synthetic aperture radar; FFT; computational cost; domain decomposition; fast Fourier transform; fast multilevel domain decomposition algorithm; high resolution images; image aggregation; interpolation; inverse synthetic aperture radar; low resolution images; multilevel algorithm; near-field ISAR imaging; phase correction; radar data domain; radar imaging; recursive application; subdomains; Computational complexity; Computational efficiency; Fast Fourier transforms; Fourier transforms; Frequency; Image resolution; Interpolation; Radar imaging; Radar tracking; Synthetic aperture radar;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
