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this matlab code describes OFDM(orthogonal frquency division multiplexing) transmitter

newmark方法是实际应用程序，尤其适合初学者入门学习，易于消化。(Newmark method is a practical application, especially for beginners entry to learn, easy to digest.)

通过粒子群优化算法实现函数的最优化，即求函数的最小或者最大值(By particle swarm optimization algorithm to realize function of optimization, the function or the minimum or maximum)

图像增强的小程序，通过修改阈值即可对多数图像进行对比度调整(Small image enhancement procedures, by modifying the thresholds for most images to adjust contrast)

里面有些常用的数值程序，如线性方程组的求解，插值，常微分方程的数值方法等等。(Inside some common numerical procedures, such as linear equations, interpolation, ordinary differential equations, numerical methods and so on.)

用于函数优化问题的混合粒子群文化算法源程序(program of function optimization based on Cultural algorithm )

SAR signal processing

粒子群优化算法源程序，广泛应用于PID参数整定，神经网络优化，交通物流分析等等。(PSO algorithm source, widely used PID parameter tuning, neural network optimization, traffic flow analysis and so on.)

针对雷达信号的脉冲压缩处理，进行了仿真，并加了汉明窗，以对比主副瓣比的改善(For pulse compression radar signal processing, simulation, and add a Hamming window to contrast ratio improved sidelobe)

说明：  计算mie散射相关参数，根据颗粒粒径 ，入射光波长 ，颗粒折射率，介质折射率，计算不同角度下散射光强，不同粒径下的消光系数。(Calculate the mie scattering related parameters, calculate the scattered light intensity at different angles and the extinction coefficient at different particle sizes according to particle size, incident light wavelength, particle refractive index, and medium refractive index.)