局部放电模式识别时候的谱图计算，放电次数随相位的分布-With phase histograms calculate PD pattern recognition time, the number of discharges

局部放电模式识别时的谱图计算，该谱图用于计算能量随相位的分布-Spectrum of computing partial discharge pattern recognition, which is used to calculate the energy spectrum with phase distribution

BP neural network function fitting and pattern recognition, Synthetic Aperture Radar (SAR) imaging simulation target, music higher order spectral analysis algorithm.