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this is a document on digital image processing and fingure print classification as well..

扩频调制模块设计及仿真（包括仿真参数设置及调制模块分析）(the design and simulation of spread spectrum modulation (including parameters and analysis))

k-means algorithm clustering

该程序是自己编写的，是基于matlab的多径信道的建立。该多径信道是基于电力线信道特性而构建的，其中的衰落系数是通过阅读大量文献而得到的。该程序能够顺利运行，并画出了信道的各个参数图。(The program is written by myself,which is to build a multi-path channel matlab based. The multi-path channel is based on the characteristics of the power line channel constructed, which is fading coefficients obtained by reading a lot of literature. The program can run smoothly, and draw a diagram of each parameter channel.)

说明：  基本滑模控制,四旋翼飞行器姿态位置基本滑模控制(basic soliding modle control)

利用自抗扰控制器理论，提出了一种新颖的永磁同步电动机无位置传感器矢量控制系统 的转速估计方法。(A novel speed estimation approach to sensorless vector control of Permanent Magnet Synchronous Motor (PMSM) based on Active Disturbance Rejection Controller (ADRC) was proposed. )

（1）采用AIC和MDL准则估计信号源个数； （2）根据（1）中信源个数画出相应的MUSIC频率估计谱线。 ((1) using the AIC and MDL sources estimate the number of criteria (2) according to (1) the number of sources of CITIC MUSIC draw the corresponding frequency spectrum estimation.)

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.)

实现典型相关分析，通过虚拟阵元进行DOA估计，基于分段非线性权重值的Pso算法。( Achieve canonical correlation analysis, Conducted through virtual array DOA estimation, Based on piecewise nonlinear weight value Pso algorithm.)

this is a code for matlab simulation in GSM this formula calculats blocking prob