| 引用本文: | 方前学,王永良,王首勇.基于分数阶傅立叶变换的ARM检测技术.[J].国防科技大学学报,2008,30(5):90-93.[点击复制] |
| FANG Qianxue,WANG Yongliang,WANG Shouyong.ARM Detection Technique Based on Fractional Fourier Transform[J].Journal of National University of Defense Technology,2008,30(5):90-93[点击复制] |
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| 基于分数阶傅立叶变换的ARM检测技术 |
| 方前学1,2, 王永良3, 王首勇2 |
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(1.国防科技大学 电子科学与工程学院，湖南 长沙 410073;2.3.空军雷达学院 重点实验室，湖北 武汉 430019;3.2.空军雷达学院 科研部，湖北 武汉 430019)
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| 摘要: |
| 分数阶傅立叶变换(FRFT)是傅立叶变换的广义形式，对线性调频(LFM)信号具有很好的能量积累作用。针对反辐射导弹(ARM)雷达回波信号的线性调频特性，提出了一种基于FRFT的反辐射导弹检测方法，并根据ARM信号的调频特性将FRFT局域化，缩小了峰值搜索区域，提高了检测效率。仿真实验表明该方法能够在高斯、非高斯分布杂波环境下有效地检测ARM信号。 |
| 关键词: 反辐射导弹(ARM)检测 线性调频信号 分数阶傅立叶变换(FRFT) |
| DOI： |
| 投稿日期：2008-05-08 |
| 基金项目:国家部委资助项目 |
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| ARM Detection Technique Based on Fractional Fourier Transform |
| FANG Qianxue1,2, WANG Yongliang3, WANG Shouyong2 |
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(1.College of Electronic Science and Engineering, National Univ. of Defense Technology， Changsha 410073, China;2.3.Key Laboratory, Radar Institute， Wuhan 430019, China;3.2.Division of Scientific Research, Radar Institute， Wuhan 430019, China)
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| Abstract: |
| The fractional Fourier transform (FRFT) is a generalization of the Fourier transform. To the linear frequency modulation (LFM) signal, the FRFT is a good way for signal accumulation. Aiming at the linear frequency modulation characteristic of the anti-radiation missile (ARM) echo signal, an improved method for ARM detection based on FRFT is proposed. The areas of peak search were reduced and the detection efficiency was improved when the FRFT was localized. The simulation experiments show that the reliable detection of ARM signal can be achieved with this method under the Gauss or non-Gauss clutter environment. |
| Keywords: anti-radiation missile (ARM) detection linear frequency modulation (LFM) signal fractional Fourier transform (FRFT) |
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