| 基于共轭FRFT模函数对消的运动目标检测 |
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| 引用本文： | 尹德强.基于共轭FRFT模函数对消的运动目标检测[J].科学技术与工程,2011(29):7118-7122. |
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| 作者姓名： | 尹德强 |
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| 作者单位： | 海军航空工程学院 |
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| 摘 要： | 分析了回波信号以及其共轭信号的FRFT幅值特性,并利用此特性提出了一种基于共轭FRFT模函数对消的海面运动目标检测方法。该方法利用回波信号在最佳变换角度有较好的能量聚集,而其共轭信号在此最佳变换角度没有能量聚集。利用两者FRFT模函数之差对消部分杂波,在保证信号能量基本不被削弱的前提下达到抑制杂波、提高检测概率的目的。高斯噪声与IPIX雷达数据实验表明该方法在低信杂比条件下有较好的检测性能。
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| 关 键 词： | 分数阶Fourier变换 共轭 检测 |
| 收稿时间： | 7/6/2011 6:35:18 PM |
| 修稿时间： | 7/6/2011 6:35:18 PM |
A detection method based on conjugated FRFT in sea clutter |
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| Yin Deqiang.A detection method based on conjugated FRFT in sea clutter[J].Science Technology and Engineering,2011(29):7118-7122. |
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| Authors: | Yin Deqiang |
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| Institution: | (Naval Aeronautical and Astronautical University,Yantai 264001,P.R.China) |
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| Abstract: | In the paper the amplitude characteristic of echo signal and its conjugate signal are analysis, based on that a detection method based on conjugated FRFT in sea clutter is proposed. The echo signal have good energy congregate at the best angle, but its conjugate signal have no energy congregate at the angle. Make difference of the two FRFT models to weakened partly clutter, and restrain clutter, increase the detect probability. Experiment using the gauss noise and IPIX data shows that the method of paper have good detect probability in low SCR. |
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| Keywords: | Fractional Fourier conjugate signal detection |
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