| 线性调频信号基于高阶累积量的分数阶域的峰度检测 |
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| 引用本文： | 黄畅,尉宇,孙德宝,骆云飞.线性调频信号基于高阶累积量的分数阶域的峰度检测[J].舰船电子对抗,2004,27(5):3-5,9. |
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| 作者姓名： | 黄畅 尉宇 孙德宝 骆云飞 |
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| 作者单位： | 华中科技大学,武汉,430074;船舶重工集团公司723所,扬州,225001 |
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| 摘 要： | 在电子侦察系统中，如何在多分量和复杂调制的情况下对线性调频(LFM)信号进行快速而有效的检测是一个重要课题。利用LFM在分数阶域的特征，提出了基于高阶累积量的分数阶域峰度检测的算法，并定性地分析了其检测性能。结果证明，峰度检测对单分量、多分量LFM信号都具有良好的检测能力，同时可以进行低噪比检测。
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| 关 键 词： | 线性调频信号 分数阶Fourier域 高阶累积量 峰度检测 |
| 文章编号： | CN32-1413(2004)05-0003-03 |
Kurtosis Detection of Linear Frequency-modulated Signal Based on High-order Culmulative Weight in Fractional Domain |
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| HUANG Chang ,WEI Yu ,SUN De-bao ,LUO Yun-fei.Kurtosis Detection of Linear Frequency-modulated Signal Based on High-order Culmulative Weight in Fractional Domain[J].Shipboard Electronic Countermeasure,2004,27(5):3-5,9. |
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| Authors: | HUANG Chang WEI Yu SUN De-bao LUO Yun-fei |
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| Institution: | HUANG Chang 1,WEI Yu 1,SUN De-bao 1,LUO Yun-fei2 |
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| Abstract: | In electronic reconnaissance system,how to detect linear frequency-modulated(LFM) signal quickly and effectively especially under the circumstance of multi-component and complicated modulation is an important problem. In this paper,by using the characteristics of the LFM signal in fractional domain,the algorithm of kurtosis detection based on high-order culmulative weight in fractional domain is put forward, and the detection performance of the algorithm is analyzed qualitatively.The results demonstrate that the kurtosis detection has good detection ability to both single component and multi-component LFM signal,and also can complete the detection under the circumstance of low signal-noise ratio. |
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| Keywords: | linear frequency-modulated signal fractional Fourier domain high-order culmulative weight kurtosis detection |
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