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《Chinese Journal of Radio Science》 2006-03
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Target detection in first-order Bragg peaks with adaptive cancellation

LEI Zhi-yong WEN Bi-yang CHENG Feng (Radiowave Propagation Lab of Electronic Information School, Wuhan University, Wuhan Hubei 430079, China)  
The strong first-order sea echo of HF surface wave radar (HFSWR) affects seriously the detection of target with slow speed, and for wide-beam radar, first-order Doppler spread widens the “blind” speed zone much more. This paper analyzed the reason for this spread in the case of unitary current, and discussed the profile correlation of the two first-order Bragg peaks. Based on the analysis, a new method for detection in first-order regions by using adaptive cancellation technique was presented. The method performs well both on simulated data and on real data for ship detection recorded by HF ocean state measurement of radar manufactured in 2003 (OSMAR2003).
【Fund】: 远程高频地波雷达监测技术“十五”高科技发展计划(2001AA631050)项目
【CateGory Index】: TN958
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