卡尔曼滤波(Kalman filtering)一种利用线性系统状态方程，通过系统输入输出观测数据，对系统状态进行最优估计的算法。由于观测数据中包括系统中的噪声和干扰的影响，所以最优估计也可看作是滤波过程。-Kalman filter (Kalman filtering) a use of linear state equations, observation data input and output through the system, the system state optimal es

Matpower6.0b2的教育版，主要用于电力系统仿真，其中包括潮流计算、最优潮流、状态估计等。(The 6.0b2 Version of Matpower is provided in this file. It is an education version for power sytem analysis. The power flow, optimal power flow, and state estimation functions are included in the simu

This function returns the optimal threshold value using the 2-D Shannon entropy method