Title :
ISAR 2-D Imaging of Uniformly Rotating Targets via Matching Pursuit
Author :
Li, Gang ; Zhang, Hao ; Wang, Xiqin ; Xia, Xiang-gen
Author_Institution :
Dept. of Electron. Eng., Tsingua Univ., Beijing, China
fDate :
4/1/2012 12:00:00 AM
Abstract :
An algorithm based on matching pursuit (MP) is proposed for inverse synthetic aperture radar (ISAR) two-dimensional (2-D) imaging of uniformly rotating targets. The ISAR echo is decomposed into many subsignals that are generated by discretizing spatial domain and synthesizing the ISAR data for every discretized spatial position. The subsignals that indeed contribute to the ISAR echo are selected by the MP, and their coefficients represent the superresolution image. The target rotation rate is estimated by combining MP with maximum contrast search.
Keywords :
image resolution; radar imaging; radar resolution; ISAR 2-D imaging; ISAR data; ISAR echo; contrast search; discretized spatial position; inverse synthetic aperture radar; matching pursuit; spatial domain; superresolution image; target rotation rate; two-dimensional imaging; uniformly rotating targets; Fourier transforms; Imaging; Matching pursuit algorithms; Signal resolution; Spatial resolution; Time frequency analysis;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.2012.6178106
