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This paper investigates the design of joint frequency offset and carrier phase estimation of a multi-frequency time division multiple access (MF-TDMA) demodulator that is applied to a digital video broadcasting—return channel system via satellite (DVB-RCS). The proposed joint estimation algorithm is based on the interpolation technique for two correlation values in the frequency and phase domains. This simple interpolation technique can significantly improve frequency and phase resolution capabilities of the proposed technique without increasing the number of the correlation values. In addition, the overall block diagram of a digital communications receiver for DVB-RCS is presented, which was designed using the proposed estimation algorithms. Index Terms—Carrier phase estimation, DVB-RCS, frequency offset estimation, interpolation, joint estimation, MF-TDMA.(This paper investigates the design of joint frequencyoffset and carrier phase estimation of a multi-frequency time divisionmultiple access (MF-TDMA) demodulator that is applied toa digital video broadcasting-return channel system via satellite (DVB-RCS). The proposed joint estimation algorithm is based onthe interpolation technique for two correlation values in the frequencyand phase domains. This simple interpolation techniquecan significantly improve frequency and phase resolution capabilitiesof the proposed technique without increasing the number ofthe correlation values. In addition, the overall block diagram of adigital communications receiver for DVB-RCS is presented, whichwas designed using the proposed estimation algorithms.Index Terms-Carrier phase estimation, DVB-RCS, frequencyoffset estimation, interpolation, joint estimation, MF-TDMA.)

说明：  Code to do volume visualization of 3D data which works in most images in 3d

EMD分解，用于处理数据，是自适应分解为若干个IMF分量，按照频率有小到大的顺序！(EMD decomposition is used to process the data, adaptive decomposed into several IMF components, in accordance with the frequency of small to large order!)

计算诺特方程求解平面纵波入射到水平界面时的纵波反射系数与转换波反射系数 matlab图形化界面，输入上下两层介质的纵横波速度与密度即可，使用方便(Knott equations to calculate longitudinal wave reflection coefficients and converted wave reflection coefficient matlab graphical interface, enter the upper and lower layers medium density and shear wave velocity and longitudinal wave incident on a plane at the level of the interface can be easy to use)

3.Root-MUSIC算法MATLAB程序(Root-MUSIC algorithm )

该代码利用matlab，根据各类边界条件的设定，实现了FDTD的算法。( This MATLAB M-file implements the finite-difference time-domain solution of Maxwell s curl equations over a three-dimensional Cartesian space lattice comprised of uniform cubic grid cells.)

comparative analysis of random forest with different feature selection algorithms.

计算粒子群算法的适应度函数，粒子群算法的程序和使用(The fitness function of pso is calculated,Particle swarm optimization program and use)

Cripting with secret key

neural network pro state control