Title :
SAR signal modeling and imaging of a moving target
Author :
Lazarov, A.D. ; Kostadinov, T.P.
Author_Institution :
Dept. of Inf. & Tech. Sci., BFU, Burgas, Bulgaria
Abstract :
Modeling of Synthetic Aperture Radar (SAR) signal and image reconstruction of a moving target is considered. SAR topology and mathematical expressions of SAR signal formation called direct transform are analytically described based on three-dimensional (3-D) geometry, linear frequency modulated (LFM) waveform, and reflectivity function of the target. Image reconstruction equation named inverse transform including two Fourier transforms and phase correction is derived. Polynomial phase correction algorithm for SAR imaging of a moving target is developed. To verify the SAR geometry, signal modeling and image reconstruction scheme of a moving target a numerical experiment is carried out.
Keywords :
Fourier transforms; geometry; image reconstruction; inverse transforms; radar imaging; reflectivity; synthetic aperture radar; 3D geometry; Fourier transforms; SAR signal modeling; direct transform; image reconstruction equation; inverse transform; linear frequency modulated waveform; moving target; polynomial phase correction algorithm; radar imaging; reflectivity function; synthetic aperture radar; three-dimensional geometry; Entropy; Geometry; Image coding; Image reconstruction; Mathematical model; Radar imaging; LFM SAR signal model; SAR imaging;
Conference_Titel :
Radar (Radar), 2011 IEEE CIE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8444-7
DOI :
10.1109/CIE-Radar.2011.6159591
