| 低信噪比的相位编码信号细微特征检测方法 |
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| 引用本文： | 张华娣,赵国庆. 低信噪比的相位编码信号细微特征检测方法[J]. 现代雷达, 2005, 27(9): 40-43,47 |
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| 作者姓名： | 张华娣 赵国庆 |
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| 作者单位： | 西安电子科技大学电子对抗研究所,西安,710071 |
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| 摘 要： | 讨论一种用傅里叶变换测量频率，由测得的频率和先验知识决定的尺度范围调整复值morlet小波的中心频率并确定一个尺度，然后在该尺度下进行复值morlet小波变换，根据得到的小波变换系数模值局部极小值来检测相位编码信号细微特征的方法。
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| 关 键 词： | 相位编码 检测 小波变换 复值morlet小波 |
| 收稿时间： | 2004-08-12 |
| 修稿时间： | 2004-08-122004-11-09 |
A Fine Characteristic Detecting Method of Low SNR Phase Coded Signal |
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| ZHANG Hua-di,ZHAO Guo-qing. A Fine Characteristic Detecting Method of Low SNR Phase Coded Signal[J]. Modern Radar, 2005, 27(9): 40-43,47 |
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| Authors: | ZHANG Hua-di ZHAO Guo-qing |
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| Abstract: | A phase coded signal fine characteristic detecting method using the local minimum modular value of the wavelet transform coefficients is presented. The wavelet transform is carried out for the complex morlet wavelet function and the scale which is determined by the measured frequency of the signal from the Fourier transform and the center frequency of the morlet wavelet function is adjusted by the a-prior knowledge. |
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| Keywords: | phase-coded detection wavelet transform complex morlet wavelet |
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