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说明：  神经网络理论与Matlab7实现,与《神经网络理论>书籍配套(Neural Network Theory and Matlab7 realized, with the &quot neural network theory&quot book package)

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.

利用白噪声序列和传递函数生成有色噪声的源代码，很实用(Using white noise sequence and colored noise transfer function to generate source code, very useful)

说明：  该代码是标准粒子滤波算法的标准代码，通俗易懂，能够运行。(The code is the standard code of the standard particle filter algorithm,it is easy to understand, and can be able to run. )

考虑雨衰 阴影 和多径影响，使用拉亚普诺夫指数的公式，抑制载波型差分相位调制。( Consider shadow rain attenuation and multipath effects Raya Punuo Fu index using the formula, Suppressed carrier type differential phase modulation.)

说明：  仿真声呐的相移波束形成，内部包含详细的程序注解，供新手进行学习(The phase-shifting beamforming of the simulated sonar contains detailed program annotation for novice learning)

数字信号的传输方式分为基带传输和带通传输，在实际应用中，大多数信道具有带通特性而不能直接传输基带信号。为了使数字信号在带通信道中传输，必须使用数字基带信号对载波进行调制，以使信号与信道的特性相匹配。这种用数字基带信号控制载波，把数字基带信号变换为数字带通信号的过程称为数字调制。通常使用键控法来实现数字调制，比如对载波的振幅、频率和相位进行键控。(Transmission of digital signals into base band transmission and band-pass transmission, in practice, most of the channel with band-pass characteristics can not directly transmit base-band signal. In order to make the digital signal is transmitted with a communication channel, you must use the digital baseband signal to modulate the carrier to make the signal to match the characteristics of the channel. The digital baseband signal control with a carrier, the digital baseband signal conversion to digital bandpass signal is called digital modulation. Keying method is commonly used digital modulation, such as on the carrier' s amplitude, frequency and phase shift keying.)

说明：  中值滤波和均值滤波,希望对大家有点帮助了呵呵,我也是在研究中.(Median filter and mean filter, we want to help a bit Oh, I am also in the study.)

General DoubleBinaryTurbo simulation

关于prony一个分析电力系统谐波检测程序，准确分析暂态信号中的幅值 相位 频率(prony algorithm for power system harmonic estimation)