摘要
天波超视距雷达目标回波信号经电离层传播,多模传播和相位污染的存在影响了目标的检测。文章主要研究了多模传播的回波具有完全不同的相位污染时的解相位污染方法。利用CMOR小波的良好的时频分析特性对回波信号进行时频分析,并将其分析结果与经典时频分析方法进行比较,得出了在解此污染情况下CMOR小波可在所有感兴趣的尺度上提供较好的时频分辨率的结论。
The Sky-wave Over-the-Horizon Radar Target echo signals are transmitted by the ionosphere, the existence of Multimode propagation and phase distortion have effects on the target detection. The decontamination methods of phase distortion is studied in this paper when muhi-mode propagation echoes have completely different phase distortion, using good time-frequency analysis of CMOR wavelet transformation made time-frequency analyzing of echo signals, and compared the result with classical time-frequency analysis methods, then draw the conclusion that in decontaminating this distortion instance, CMOR wavelet transformation can provide better time-frequency resolution at in all interested scales.
出处
《微计算机信息》
2009年第10期305-307,共3页
Control & Automation
关键词
CMOR小波变换
时频分析
相位污染
多模传播
CMOR Wavelet Transformation
Time-Frequency Analysis
Phase Distortion
Multi-mode Propagation
