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A New Slant-Range Velocity Ambiguity Resolving Approach of Fast Moving Targets for SAR System

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5 Author(s)
Shengqi Zhu ; Nat. Key Lab. of Radar Signal Process., Xidian Univ., Xi''an, China ; Guisheng Liao ; Yi Qu ; Xiangyang Liu
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This paper describes an ambiguity resolving approach for slant-range velocity estimation which utilizes the wideband characteristic of the transmitted signal (multiple wavelengths). Based on the wavelength dual-wavelength radar data. Then, two effective approaches are introduced to focus the moving target no matter the Doppler ambiguity exists or not. The slant-range velocity is estimated by the number of azimuth cell displacements between the two focused images. Both imaging methods have different properties and advantages. A performance analysis is made, and deleterious factors in practice are analyzed in detail. The effectiveness of the unambiguous slant-range velocity estimation approach is demonstrated with the use of simulated and real data.

Published in:

Geoscience and Remote Sensing, IEEE Transactions on  (Volume:48 ,  Issue: 1 )

Date of Publication:

Jan. 2010

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