Abstract
This paper studies the vibration target imaging methods in dual-channel synthetic aperture radar (SAR). Firstly, the echo model of vibration target has been established in dual-channel SAR. According to the analysis of the echo characteristics, an imaging method in original signal domain has been proposed to make vibration target refocused in SAR images. In the meanwhile, due to the problem that when there are static targets in the range cell of vibration targets, the imaging method in original signal domain can’t focus on these two kinds of targets at the same time, another vibration target imaging method based on the displaced phase center antenna (DPCA) technique has been presented as a solution. The validity of the two imaging methods has been verified by simulation, which also points out that compared with the imaging method in original signal domain, the imaging method in DPCA signal domain has better anti-noise performance.
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