瑞利分布的气象雷达回波，时频分析，功率谱密度，频谱分布。-Rayleigh distribution of meteorological radar echo time-frequency analysis, power spectral density, spectral distribution.

Spectral methods of computational fluid dynamics flow of some of the overall stability of the phenomenon, Phased array antenna pattern (Chebyshev weights), Based on negative entropy largest independent component analysis.