利用小波变换的高性能谱估计算法
AN EXCELLENT PERFORMANCE SPECTRUM ESTIMATION ALGOTITHM BASED ON WAVELET TRANSFORM
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摘要: 本文提出了基于小波变换的一种新的高性能谱估计算法。由于小波变换同时在时、频域具有良好的局部化特性,本文的算法适用于低信噪比、短时数据序列的情况。文中给出的计算机仿真结果证明,本文算法具有较高的分辨率和估计精度、较低的信噪比门限。
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关键词:
- 小波变换; 快速傅里叶变换; 功率谱估计
Abstract: In this paper an excellent performance spectrum estimation algotithm based on wavelet transform is given. Because of the joint time-frequency localization characteristic of wavelet transform,this algotithm is also used in the spectrum estimation of short data series. The results of computer simulation illustrate that this method achieves high resolution, high accuracy, and low SNR threshold. -
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