| 基于单路滑窗宽变窄的超宽谱线性调频侦收技术 |
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| 引用本文： | 金少峰,赵国庆,王辉.基于单路滑窗宽变窄的超宽谱线性调频侦收技术[J].电子信息对抗技术,2005,20(4):15-18. |
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| 作者姓名： | 金少峰 赵国庆 王辉 |
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| 作者单位： | 西安电子科技大学电子对抗所,西安,710071 |
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| 摘 要： | 采用信号自相关技术解线调,将超宽谱线性调频信号转化为窄带信号,然后量化为数字信号,做短时傅立叶变换识别信号,采用自适应滤波器组分离多信号。仿真证明,该方法可在-12dB的低信噪比情况下识别信号;在多信号下,能有效抑制交叉项的干扰;并且系统运算量较低,适合于实时处理。
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| 关 键 词： | 宽变窄 超宽谱线性调频(UWBFM) 自相关 短时傅立叶变换(STFT) |
| 文章编号： | CN51-1418(2005)04-0015-04 |
| 修稿时间： | 2004年8月19日 |
Reconnaissance Receiving of Ultra-Wide Band Linear Frequency-Modulated Signal Based on Single Slide-Window Wideband-to-Narrowband |
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| Authors: | JIN Shao-feng ZHAO Guo-qing WANG Hui |
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| Abstract: | Ultra-wide band linear frequency-modulated (UWBFM) signal is changed into narrowband signal by using signal autocorrelation to dechirping. UWBFM signal is sampled and quantized into digital signal and is recognized by short-time Fourier transform. The adaptive filter separates signal. Simulation result proved that this method can recognize signal at signal to noise ratio to -12dB.It can restrain the cross term effectively.And it can be real-time processing for little computational load. |
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| Keywords: | wide to narrow ultra-wide band frequency-modulated (UWBFM) autocorrelation short-time Fourier transform |
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