Remote Sensing Applications and Decision Support

Ground moving target indication of multichannel synthetic aperture radar based on statistics of the dominant-velocity image

[+] Author Affiliations
Hongchao Zheng, Junfeng Wang, Xingzhao Liu

Shanghai Jiao Tong University, School of Electronic Information and Electrical Engineering, 800 Dongchuan Road, Shanghai 200240, China

J. Appl. Remote Sens. 10(3), 036010 (Jul 28, 2016). doi:10.1117/1.JRS.10.036010
History: Received January 29, 2016; Accepted July 12, 2016
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Abstract.  A scheme is presented in this paper for ground moving target indication of multichannel synthetic aperture radar (SAR) systems. “Dominant-velocity” is chosen as a valuable metric to describe the velocity map of the observed scene and the “dominant-velocity image” (DVI) can be generated via the developed spatial spectral processing technique. The mean μ and the standard deviation σ of each dominant-velocity are estimated from its neighborhood. Two different methods are proposed to derive the detection threshold in the (μ,σ) plane: one is a nonparametric histogram approximation approach and the other is a parametric polynomial curve-fitting approach. The proposed ground moving target indication approach is a multistage one: the first stage implements the preliminary detection in the (μ,σ) plane and a clustering technique is utilized to indicate potential moving targets, while the second stage implements the fine detection via a velocity estimation method based on maximum signal-to-interference ratio for the tagged targets. Finally, the effectiveness of the proposed method is verified by both simulated and real airborne SAR data.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Hongchao Zheng ; Junfeng Wang and Xingzhao Liu
"Ground moving target indication of multichannel synthetic aperture radar based on statistics of the dominant-velocity image", J. Appl. Remote Sens. 10(3), 036010 (Jul 28, 2016). ; http://dx.doi.org/10.1117/1.JRS.10.036010


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