中文说明： 结合PCA的尺度不变特征变换(SIFT)算法，计算多重分形非趋势波动分析matlab程序,wolf 方法计算李雅普诺夫指数,电力系统暂态稳定程序，可以进行暂态稳定计算,利用自然梯度算法，计算目标和海洋回波的功率谱密度。
English Description：
Combined with the scale invariant feature transform (SIFT) algorithm of PCA, the matlab program for multifractal non trend fluctuation analysis, the wolf method for Lyapunov exponent and the power system transient stability program can be used for transient stability calculation. The natural gradient algorithm can be used to calculate the power spectral density of target and ocean echo.