suijixinhaoyangbenshu

THREE PHASE MODEL OF DYNAMIC VOLTAGE RESTORER FOR INVERTER CONTROL SCHEME

著名的数学软件Matlab,Mathematica,Maple中文教程，对从事数学计算仿真的工程师非常有帮助！(Chinese tutorial mathematics software known as Maple ,Matlab and Mathematica, is very helpful for mathematical simulation engineer! )

波达方向（Direction Of Arrival）估计，又称为谱估计（spectral estimation）、波达角（Angle Of Arrival）估计。一个信源有很多可能的传播路径和到达角。如果几个发射机同时工作，每个信源在接收机处形成潜在的多径分量。因此，接收天线能估计出这些到达角就显得很重要，目的是破译出哪个发射机在工作以及发射机所处的可能位置。通过测量辐射信号的波达方向（DOA全称Direction Of Arrival）或波达角（AOA）来估测辐射源的位置。理论上这种估计只需要两个接收阵元就可以确定辐射源的位置，但在实际中，由于受到角度分辨率、多径和噪声限制，所需阵元通常要多于两个。DOA定位技术原理是利用接收机处的阵列天线和波达方向（DOA）估计技术来确定一个从接收机到信源的波达方向线，即为方向线（LOB），最后利用多个接收机估计的DOA进行三角测量，方向线的交点就是信源的估计位置。(DOA (Direction Of Arrival) estimation , also known as spectral estimation (spectral estimation), angle of arrival (Angle Of Arrival) estimation. There are many possible sources a propagation path and the angle of arrival . If several transmitters simultaneously, a potential source for each multipath component at the receiver. Therefore, the receiving antenna can estimate the angle of arrival becomes very important, which aims to decipher the location of the transmitter at work as well as possible in which the transmitter . By measuring the radiation signal DOA (DOA stands for Direction Of Arrival) or the angle of arrival (AOA) to estimate the location of the radiation source . Theoretically this estimate requires only two receiving array element can determine the position of the radiation source , but in practice , due to the angular resolution , multipath and noise limits , usually required more than two array elements . DOA positioning technology is the use of an array of antennas at)

应用matlab程序，实现了对手写数字的识别，准确率非常高。(Matlab application procedures, to achieve the hand-written digit recognition, the accuracy rate is very high.)

包括语音的录制程序，加噪程序，以及标准的噪声库，还有用谱减法实现带噪语言信号的增强等程序(ncluding voice recording program, noise procedures, and standards of noise library, as well as achieve the noisy speech signal enhancement using spectral subtraction procedure)

关于锁模激光器基础的仿真程序。初学者可以参考(About the mode-locked laser based simulation program. Beginners can refer to )

详细介绍了窄带滤波器的设计，如半带，CIC等原理，原理很详细(Details of the narrow-band filter design, such as half-band, CIC and other principles, the principle in detail)

这是一个Matlab开发的数字波束形成源代码，基于music算法的，仿真正确。(This is a Matlab development of digital beamforming source code, based on the music algorithm, the simulation is correct.)

说明：  里面有不少MATLAB学习课件,对新手很有帮助。(there are many study matiarial)

天线子阵级加权算法，归一化方法仿真程序，有效抑制旁瓣特性(The antenna subarray level weighting algorithm, the simulation program, effective normalization method to suppress sidelobe characteristics)