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| A Study on Bistatic SAR Velocity Bunching Modulation of Ocean Surface |
| Yu Ying①② Wang Xiao-qing① Zhu Min-hui① Xiao Jiang① |
| ①(National Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Beijing 100190, China) ②(Graduate University of the Chinese Academy of Sciences, Beijing 100049, China) |
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Abstract In order to develop bistatic SAR ocean investigation, the first issue is the study of bistatic SAR ocean surface imaging mechanism. And velocity bunching mechanism is a SAR inherent modulation. Thus, the intensity expression in the bistatic SAR image plane is derived in this paper. The expression describes quantificationally the displacement of the scatter elements in the image plane and a degradation in radar resolution in azimuthal direction. In addition, a bistatic SAR linear velocity bunching transfer function is obtained in the linear parameter regime. Finally, this paper analyzes qualitatively the effects that various platform observation conditions have on the bistatic SAR linear imaging range of wave spectrum.
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Received: 29 August 2007
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Corresponding Authors:
Yu Ying
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2008, Vol. 30 
