快速傅里叶变换，可用于谐波分析等算法，用 C++编译-Fast Fourier transform, harmonic analysis method can be used with C++ compiler

5小波滤波器增强方案快速积分B-wavelet变换和锥体multi-B小波算法。应用与计算谐波分析_nelson_acha 18(3)234 - 251 234-5 A wavelet filter enhancement scheme with a fast integral B-wavelet transform and pyramidal multi-B wavelet algorithm . Applied & Computational Harmonic Analysis 18(3)

单相并网逆变器并网电流中含有大量谐波，传统的PI 控制器难以满足波形跟踪需要，此处采用比例+复的复合控制算法用于逆变器电流环控制器设计(The single-phase grid-connected inverter has a large amount of harmonics in the grid-connected current. The traditional PI controller can not meet the needs of waveform tracking. Her

计算目标和海洋回波的功率谱密度,用于信号特征提取、信号消噪，Pisarenko谐波分解算法。( Calculating a target and ocean echo power spectral density, For feature extraction, signal de-noising, Pisarenko harmonic decomposition algorithm.)