Moving-target imaging based on space-time-frequency signal processing for SAR system

Yao Huang; Shijun Huang

doi:10.1117/12.2011975

20 March 2013 Moving-target imaging based on space-time-frequency signal processing for SAR system

Yao Huang, Shijun Huang

Proceedings Volume 8768, International Conference on Graphic and Image Processing (ICGIP 2012); 87685H (2013) https://doi.org/10.1117/12.2011975
Event: 2012 International Conference on Graphic and Image Processing, 2012, Singapore, Singapore

Abstract

A method for moving-target imaging in dual-channel SAR system based on space-time-frequency signal processing is studied. In space-time domain, adaptive sliding-window processing method is applied to get high output signal to noise ratio by dual-channel clutter suppression. In time-frequency domain, modified discrete Chirp-Fourier transformation is applied to get Doppler modulation frequency parameters. Range migration is solved by Keystone transformation. Azimuth velocity accuracy is improved by phase compensation. Parameter decoupling is solved by channel phase deviation. A lot of simulation experiments verify the validity of the proposed method.

Citation Download Citation

Yao Huang and Shijun Huang "Moving-target imaging based on space-time-frequency signal processing for SAR system", Proc. SPIE 8768, International Conference on Graphic and Image Processing (ICGIP 2012), 87685H (20 March 2013); https://doi.org/10.1117/12.2011975

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KEYWORDS

Synthetic aperture radar

Imaging systems

Doppler effect

Signal processing

Time-frequency analysis

Antennas

Phase compensation

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