Performance Analysis of Surface Current Extraction by HF-SAR Based on First Order Sea Echo

Xue Wen-hu; Zhang Ming-min; Li Xian-mao; Yuan Xiang-hui

doi:10.3724/SP.J.1146.2007.01500

Volume 31 Issue 2

Dec. 2010

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Article Navigation > Journal of Electronics & Information Technology > 2009 > 31(2): 382-385

Xue Wen-hu, Zhang Ming-min, Li Xian-mao, Yuan Xiang-hui. Performance Analysis of Surface Current Extraction by HF-SAR Based on First Order Sea Echo[J]. Journal of Electronics & Information Technology, 2009, 31(2): 382-385. doi: 10.3724/SP.J.1146.2007.01500

Citation:

Xue Wen-hu, Zhang Ming-min, Li Xian-mao, Yuan Xiang-hui. Performance Analysis of Surface Current Extraction by HF-SAR Based on First Order Sea Echo[J]. Journal of Electronics & Information Technology, 2009, 31(2): 382-385. doi: 10.3724/SP.J.1146.2007.01500

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Performance Analysis of Surface Current Extraction by HF-SAR Based on First Order Sea Echo

doi: 10.3724/SP.J.1146.2007.01500

Received Date: 2007-09-18
Rev Recd Date: 2008-04-07
Publish Date: 2009-02-19

Abstract

Abstract

It is important to apply synthetic aperture technique to High Frequency Surface Wave Radar (HFSWR), and thus to implement surface current extraction by a single site, for the sake of reducing observation cost and improving efficiency. However the existing signal model of High Frequency SAR (HF-SAR) is based on theoretic point targets, and therefore the Bragg scattering effect of sea resolution cells is not considered. To solve this problem, an improved signal model of surface current extraction by HF-SAR is presented based on first order sea echo, and the effect of Bragg scattering to the azimuth echo of HF-SAR is analyzed. Then a velocity estimation algorithm is designed according to the signal features of the azimuth echo. Finally the velocity estimation performance of HF-SAR is analyzed on a specified resolution cell by Monte Carlo simulation. Simulation results show that the estimation precision of velocity and direction meets the requirements of engineering application, which indicates that it is feasible to extract surface current by HF-SAR.

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References(1)

References

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