Sparse-Time-Frequency-Representat

通过BP网络实现对非线性函数（正弦函数）的逼近。函数比较短，很简练。(Through the BP network for the nonlinear function (sine function) approximation. Function relatively short and very concise.)

说明：  通信信号的调制信息包含在信号的瞬时幅度、相位、频率的变化之中，不同的信号其频谱也呈现不同的特征，通过提取瞬时幅度、相位、频率以及频谱的参数统计特征，可以识别不同的通信信号。通常是利用对瞬时幅度、瞬时相位，瞬时频率和信号功率谱进行某种变换而得到可以明显区分各种信号的特征参数。(Communication signal modulation information is contained in the signal instantaneous amplitude, phase, frequency changes, the spectrum of different signals also show different characteristics, by extracting the instantaneous amplitude, phase, frequency and statistical characteristics of the parameters of the spectrum, you can identify different communication signals. Usually by the use of instantaneous amplitude, instantaneous phase, instantaneous frequency and signal power spectrum a transformation which can be clearly distinguished by the characteristic parameters of various signals.)

How to create a modulated 64-QAM signal

力矢量算法实现的画图程序，编写环境matlab， 3D 本人原创 (force-oriented graph drawing algrithm, 3D, computer science applied)

matlab函数 k的阶乘 factrial(Matlab function k factorial factrial)

数字信号处理（西电第三版）matlab程序(Digital signal processing (Western Electric Third Edition) matlab program)

用Markov模型建立信道概率统计模型，是不错的GSM信道仿真的资料(Channel Markov model with probabilistic statistical model is a good simulation of GSM data channel)

Direct Turk Control of Induction Motor

说明：  isar成像，含外场数据，可以模拟成像效果(ISAR imaging including field data can simulate the imaging effect)

说明：  从理论上介绍了MUSIC算法原理、分析了阵列相位误差对MUSIC算法性能的影响(The principle of music algorithm is introduced in theory, and the effect of array phase error on the performance of music algorithm is analyzed)