3--digital-shearlet-transform-

Power flow studies, commonly known as load flow, form an important part of power system analysis. They are necessary for planning, economic scheduling and control of an existing system as well as planning its future expansion. The problem consists of determining the magnitudes and phase angle of voltages at each bus and active and reactive power flow in each line. In solving power flow problem, the system is assumed to be operating under balanced conditions and a single-phase model is used. Four quantities are assumed at each bus. These are voltage magnitude v, phase angle  , real power P, and reactive power Q.The Newton Raphson method of load flow analysis is an iterative method which approximates the set of non-linear simultaneous equations to a set of linear simultaneous equations using Taylor’s series expansion and the terms are limited to first order approximation.

利用Matlab提供的firhalfband函数设计阶数为16、通阻带容限为0.0001的半带滤波器。 仿真测试滤波前后的信号时域图，绘制滤波器的频率响应特性图。( Matlab provides firhalfband function design of the order number is 16, stopband tolerance of 0.0001 half band filter. simulation test before and after filtering signal time domain graph, drawing filter frequency response characteristics of the figure.)

matlab下的两步法标定程序，应该对大家有所帮助(matlab under the two-step calibration process should be helpful to everyone)

This code implement RBF neural network in matlab

粒子滤波方法用于跟踪，很易看懂的程序，建议初学者下载学习(Particle filter for tracking, it is easy to understand the procedures recommended for beginners to learn to download)

此代码采用分布傅里叶法实现光纤通信中的色散和非线性特性传输。(This code simulates the NRZ code and decode in single mode fiber communication )

说明：  工业图像处理软件，但没有数据库，具体操作说明见(Industry image processing software, but there is no database, see the specific operation instructions)

linear convolution of two dimensional sequnces

说明：  波束调向直线阵 边射阵和端射阵是一般调向直线阵的特例(Beam transfer line array broadside to the array and end-fire array is generally transferred to the special case of linear array)

说明：  一个利用Matlab绘图的教程，可以简单的绘制一些曲线。(A use of Matlab graphics tutorials, you can draw a number of simple curves.)