part4

对二进制序列进行DPSK调制，绘出绝对码、相对码、调制后的曲线、加噪声后的曲线图(Sequence of binary DPSK modulation, draw absolute code, the relative code, modulated curve, after curve plus noise)

说明：  离散周期信号的Fourier级数频谱分析(Fourier series discrete periodic signal spectrum analysis)

基于谱聚类的新数据聚类算法，可用于一般的时间序列数据聚类及图像分割方面的应用，还包含相应的文章和算法说明。(Executes the spectral clustering algorithm defined by type on the adjacency matrix W and returns the k cluster indicator vectors as columns in C.)

Filter for equalizer

牛顿法求解一元三次方程的matlab 的程序，可以在十秒内求解任意一元三次方程(Newton s method for cubic equations)

关于近来很火的灰色预测理论的matlab的源代码，移植性好，与诸位学友共同分享，共同进步(About the grey prediction theory recently very fire matlab source code, good portability, xueyou with share, make progress together)

模糊洗衣机系统，通过对衣服干净程度的判断来控制水温，洗衣时间长短以及洗衣粉用量。(Fuzzy washing system, through the clean clothes to determine the extent to control water temperature, the length of time as well as laundry detergent dosage.)

用MATLAB.实现3维数据立体图，是拟合的图形。(Using MATLAB. The realization of 3-D three-dimensional map data is the fitting graphics.)

Saleh model for use in memoryless nonlinear power amplifier (PA) behavioural modelling

合成孔径雷达回波模拟器的建模仿真与系统设计，首先介绍了合成孔径雷达的高分辨力成像原理、SAR回波理论模型和几种SAR原始回波数据模拟算法。然后采用距离时域脉冲相干法对点目标的原始回波数据进行了模拟，并用经典RD算法对该回波进行处理，得到了期 望的结果，本文还用同样的方法对点阵目标的原始回波数据进行了模拟。 (Synthetic aperture radar echo simulator modeling and simulation system design, first introduced high resolution synthetic aperture radar imaging principle, the the SAR echo theoretical model and several SAR raw echo data simulation algorithm. Domain pulse coherent method and then using the distance of the original point target echo data simulation, and the echo processing using the classic RD algorithm to get the desired results, this paper also used the same way the original dot target back wave data were simulated.)