Title :
Joint time-frequency analysis for radar signal and imaging
Author_Institution :
US Naval Res. Lab., Washington
Abstract :
The Fourier transform has been widely used in SAR signal and image processing. In most cases, SAR signals exhibit time-varying behavior in the Doppler spectrum. Thus, a joint time-frequency analysis (JTFA) for SAR signals is more useful. In this paper, we introduce three important issues with JTFA for radar signal and imaging: (1) time-frequency based image formation; (2) time-frequency analysis of ground moving targets; and (3) time-frequency analysis of micro- Doppler signatures.
Keywords :
Doppler effect; Fourier transforms; geophysical signal processing; geophysical techniques; radar imaging; synthetic aperture radar; time-frequency analysis; Fourier transform; SAR signals; ground moving targets; image processing; joint time-frequency analysis; micro- Doppler signature; radar imaging; radar signal; time frequency analysis; time frequency based image formation; Acceleration; Doppler radar; Fourier transforms; Image processing; Radar applications; Radar imaging; Radar signal processing; Signal processing; Synthetic aperture radar; Time frequency analysis;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
DOI :
10.1109/IGARSS.2007.4424025
