fenghen

光学非球面的模拟和计算，用于计算非球面的斜率(ASPHERE_DIFF calculates the slope of an aspherical surface at a given height)

matlab code sets for utility applications

一个OFDM符号128个有效符号，插入128个虚拟子载波 符号率（即有效数据率）fsymbol，而发送速率（需要包括虚拟子载波）2fsymbol 输入的数据需要2倍的发送数据率，以便进行内插，实现位定时跟踪，即4倍fsymbol采样率的调制信号 OFDM symbol Nfft=128 points 一个OFDM符号数据点 Nfft*2 = 256 ， Guard Interval点 ＝Ng*2=64 (128 of an OFDM symbol of a valid symbol 128 inserted virtual sub-carrier Symbol rate (the effective data rate) fsymbol sending rate (including virtual subcarriers) 2fsymbol Of the input data needs to be 2 times the transmission data rate, in order to carry out the interpolation, to achieve the bit timing tracking, i.e. four times the sampling rate modulation signal fsymbol OFDM symbol Nfft = 128 points One OFDM symbol data points nfft* 2 = 256, the Guard Interval dot = Ng* 2 = 64)

说明：  这是一个很好用的跳频通信系统的matlab仿真的资料，对于不会的同学很有效。simulink的设计电路方法很简单，(This is a very good use of frequency hopping communication system of MATLAB simulation data, for students will not be very effective. The circuit design method of Simulink is very simple)

该程序不使用matlab自带的程序，自主编写，进行简单更改可以实现多中功能，算法思想是滤波器的实现！(The program does not use matlab own procedures, self-writing, more than a simple change in function can be achieved, the algorithm idea is the realization of filters!)

Adam bash forth predictor and corrector method.

Guide wave on a line

通过ZMNL方法，完成了对瑞丽杂波，威布尔杂波，对数正态分布杂波以及K杂波的建模仿真，并对功率谱以及杂波幅度概率分布进行分析仿真(By ZMNL method, completed the Ruili clutter, Weibull clutter, lognormal and K clutter clutter modeling and simulation, and the power spectrum and amplitude probability distribution clutter simulation analysis)

说明：  建立GEO和LEO的轨道，并计算他们间方位角和俯仰角速度及加速度，多普勒频移等重要参数。(established GEO and LEO orbits, and calculate their azimuth and pitch between angular velocity and acceleration, Doppler frequency shift and other important parameters.)

Matlab support vector machine training part 2