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SAR Doppler frequency rate estimation based on time-frequency rate distribution

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6 Author(s)
Liu Xianhua ; School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China ; Xiong Jintao ; Huang Yulin ; Wu Junjie
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Time-frequency rate distribution (TFRD) indicates the characteristics of instantaneous frequency rate (IFR) of a signal. This paper proposed a method based on time-frequency rate distribution to estimate Doppler frequency rate by analyzing the linear frequency-modulated (LFM) characteristics of synthetic aperture radar (SAR) echo in the azimuth direction. This method can be applied to low signal-to-noise ratio (SNR) situation with high estimation precision. Simulation and practical results show the effectiveness of the method.

Published in:

Synthetic Aperture Radar, 2009. APSAR 2009. 2nd Asian-Pacific Conference on

Date of Conference:

26-30 Oct. 2009