Title :
Applying fractional Fourier transform to radar imaging of moving targets
Author :
Liu, Hao ; Zhu, Minhui
Author_Institution :
Inst. of Electron., Chinese Acad. of Sci., Beijing, China
Abstract :
A fractional Fourier transform based method for radar imaging of moving targets is presented in this paper. Compared with the traditional joint time-frequency approaches, it can achieve a better result of clutter cancellation by using optimal filtering in the fractional Fourier domain due to linear and rotational properties of this transform. By using this method, we can carry out moving targets detection, LFM signal parameters estimation as well as clutter cancellation at the same time under the time-frequency analysis. The effectiveness of this method has been tested through simulation.
Keywords :
Fourier transforms; geophysical signal processing; geophysical techniques; radar clutter; radar imaging; synthetic aperture radar; time-frequency analysis; LFM signal parameters estimation; clutter cancellation; fractional Fourier transform; linear properties; moving targets; optimal filtering; radar imaging; rotational properties; time-frequency analysis; Clutter; Filtering; Fourier transforms; Nonlinear filters; Object detection; Parameter estimation; Radar imaging; Signal detection; Testing; Time frequency analysis;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1295365
