电子学报Issue(11)：2247-2252,6.DOI:10.3969/j.issn.0372-2112.2014.11.018
匹配 Wigner 变换及其在瞬时频率估计中的应用
Matched Wigner Transform and Its Application to Instantaneous Frequency Estimation
摘要
Abstract
A novel time-frequency analysis method referred to as matched Wigner transform (MWT) was defined in this pa-per .By matching bilinear signal kernel with Taylor extended Fourier revolving factor ,MWT can produce a time-frequency distribu-tion (TFD ) with best concentration and without inner artifacts for mono-component high-order polynomial phase signal (PPS ) .In addition ,an effective parameter and instantaneous frequency (IF ) estimation algorithm was proposed based on MWT .The algorithm was validated by simulation examples .Finally ,excellent sea experiment results were obtained when applying it to analyze the weak Doppler signal of underwater moving acoustic source .关键词
时频分布/多项式相位信号/匹配Wigner变换/瞬时频率估计/多普勒信号Key words
time-frequency distribution (TFD)/polynomial phase signal (PPS)/matched Wigner transform/instantaneous frequency estimate (IF )/Doppler signal分类
信息技术与安全科学引用本文复制引用
徐灵基,杨益新,杨龙..匹配 Wigner 变换及其在瞬时频率估计中的应用[J].电子学报,2014,(11):2247-2252,6.基金项目
国家自然科学基金 （）
