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22 March 1999 Synthetic aperture sonar imaging using joint time-frequency analysis
Genyuan Wang, Xiang-Gen Xia
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Proceedings Volume 3723, Wavelet Applications VI; (1999) https://doi.org/10.1117/12.342961
Event: AeroSense '99, 1999, Orlando, FL, United States
Abstract
The non-ideal motion of the hydrophone usually induces the aperture error of the synthetic aperture sonar (SAS), which is one of the most important factors degrading the SAS imaging quality. In the SAS imaging, the return signals are usually nonstationary due to the non-ideal hydrophone motion. In this paper, joint time-frequency analysis (JTFA), as a good technique for analyzing nonstationary signals, is used in the SAS imaging. Based on the JTFA of the sonar return signals, a novel SAS imaging algorithm is proposed. The algorithm is verified by simulation examples.
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Genyuan Wang and Xiang-Gen Xia "Synthetic aperture sonar imaging using joint time-frequency analysis", Proc. SPIE 3723, Wavelet Applications VI, (22 March 1999); https://doi.org/10.1117/12.342961
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KEYWORDS
Doppler effect
Fourier transforms
Time-frequency analysis
Synthetic aperture radar
Radar
Motion measurement
Detection and tracking algorithms
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