amam_ampm

在matlab环境下基于傅立叶变换的图像压缩和反压缩(Matlab environment in Fourier transform-based image compression and anti-compression)

some basic tutorial for matlab programming easy to understand

这是一份高阶统计量的资料，有相关的程序，目前高阶统计量是研究的热门话题，对于地震子波的高精度提取有重要意义。(This is a higher-order statistics of the data full of relevant procedures,and at present higher-order statistics is a hot topic which is very important and significant for high-precision seismic wavelet extraction.)

用于交通流模拟使用的源代码，复制到matlab上即可使用。(Source code for traffic flow simulation used, copied to the matlab can be used.)

无线通信算法中的LTE-A实现matlab仿真平台，包括QrqBdw调制编码方式，以及jUbWonc技术，多天线，协同通信的基本原理，都调试通过了，是个整体框架程序。 (Wireless communications algorithms achieve LTE-A matlab simulation platform, including QrqBdw modulation and coding schemes, as well asjUbWonc technology, multiple antennas, the basic principles of cooperative communication, both through debugging, and is a whole framework program. )

一1000 MW水电站（机组M1）通过一条500 kV, 700 km的输电线路与负载中心连接。负载中心模型是5000 MW的阻抗负载，由遥远的1000 MW电站和当地的5000 MW (机组 M2)电站供电。系统已经初始化，因此线路传送950 MW，接近它的潮流阻抗负载（SIL = 977 MW）。这两台机相当于一台水轮机和管理(HTG)，励磁系统和电力系统稳定器(PSS)。这三个模块位于“涡轮和调速”子系统中。通过此例，在500 kV系统中制造故障，观察PSS对系统稳定性的影响。(a 1,000 MW hydropower station (crew M1) through a 500 kV, 700 km of transmission line and load center. Load center model is 5,000 MW of load impedance. from the distant 1000 MW power station and the local 5,000 MW (Unit M2) power supply. Is initialized, it transmits 950 MW. closer to its trend of load impedance (SIL = 977 MW). This machine is equivalent to a two hydraulic turbines and Management (HTG), excitation system and the power system stabilizer (PSS). This module is located at 3 "and turbine speed" subsystem. Through this cases, the 500 kV system manufacturing fault, PSS observation of the system stability.)

故障定位程序 主要应用于交流故障测距 在MATLAB环境下进行编译 (Fault Locator)

说明：  升压转换器是一种DC / DC电源转换器，可将电压从其输入（源）升至其输出（负载）。在连续导通模式下（流经电感的电流永远不会降为零），升压转换器的理论传递函数为： 占空比在哪里0.5 在此示例中，转换器从250 V电源馈送RC负载，并且PWM频率设置为31 kHz。 模拟 运行仿真并观察示波器上的波形。确认负载电压（Vout）的平均值非常接近理论值：Vout = 250 /（1- 0.5）= 500V。(A boost converter is a DC/DC power converter which steps up voltage from its input (source) to its output (load). In continuous conduction mode (current through the inductor never falls to zero), the theoretical transfer function of the boost converter is: where is the duty cycle.0.5 In this example, the converter is feeding an RC load from a 250 V source and the PWM frequency is set to 31 kHz. Simulation Run the simulation and observe waveforms on Scope. Verify that the mean value of the load voltage (Vout) is very close to the theoretical value of: Vout = 250 / (1 - 0.5) = 500 V.)

基于奇异值分解的图像压缩。分别给出了灰度及RGB真彩图的压缩代码。　　 (Based on singular value decomposition of the image compression. Are given respectively grayscale and RGB true color pictures of the compression code.)

说明：  二维光子晶体禁带的遗传优化算法.在平面波展开法的基础上，使用遗传算法寻找具有最大光子禁带的二维光子晶体结构(Photonic Band Gap Genetic Algorithm)