Ionospheric-channel-simulation

边缘提取技术边缘是图像对视觉的最主要特征，因此在计算机视觉技术中提出了多种检测边缘的算法。由于各种原因，图像常常受到随机噪声的干扰，经典的边缘检测的结果常常是将噪声误检为边缘点，而真正的边缘由于噪声干扰却可能被漏检。因而对于被噪声污染的图像来说，一种好的边缘检测方法应具有良好的噪声抑制能力，同时又有完备的边缘保持特性。(After analysing the soft threshold funetion,the smoothness threshold function is proposed by modifying the soft threshold function.because this function keeps smooth in the entire value range,some important details in the process of image denoising can be held. Firstly we detect the edge of the noising image. )

说明：  在spectral method for matlab、Spectrral and High-order methods in Engineering、Matlab computing science的书中附带程序(computational spectral method books code)

最常用的俄语词组，帮助大家记忆，给大家提供一个词组的汇总(The most commonly used Russian phrases to help you remember, give us a summary of the phrase)

MIMO-OFDM wireless communications with matlab 例程。包含propagation and fading、SISO channel models、MIMO Channel models、intorduction to ofdm、 synchronization for ofdm、channel estimation、Papr reduction、inter-cell interference mitigation techniques MIMO channel capacity,attenna diversty and space-time coding techniques, signal detection for spatially multiplexed mimo systems, exploitingchannel state information at the transmitter side, multi-user MIMO(MIMO-OFDM wireless communications with matlab routines. Includes propagation and fading, SISO channel models, MIMO Channel models, intorduction to ofdm, synchronization for ofdm, channel estimation, Papr reduction, inter-cell interference mitigation techniques MIMO channel capacity, attenna diversty and space-time coding techniques, signal detection for spatially multiplexed mimo systems, exploitingchannel state information at the transmitter side, multi-user MIMO)

This code calculated the LDP histogram and is based on B Zhang, Y Gao, S Zhao & J Liu, "Local Derivative Pattern Versus Local Binary Pattern: Face Recognition With High-Order Local Pattern Descriptor," Image Processing, IEEE Transactions on, vol.19, no.2, pp.533,544, Feb. 2010

variational method used for donising the image data

VC编译器使用Matlab_Com组件的方法（转载）(VC_Matlab_Com)

说明：  一个用matlab编写的一维FDTD算法程序(Using matlab to prepare a one-dimensional FDTD algorithm procedure)

一个用于求解无对角线性方程组的matlab程序。是通过LU矩阵分解进行求解的。(a matlab program for getting the roots of big linear equations by LU decompisition. )

关于雷电系统设计的资料，对设计雷电定位系统有参考价值(About lightning system design information on the design of lightning location system have reference value)