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the fuction performs thresholding to the eye images. this function can be used in implementing daugman algo for iris localization.

利用MATLAB 仿真工具设计出一个QPSK仿真程序，以衡量QPSK在理想信道、高斯白噪声信道和先通过瑞利衰落信道再通过高斯信道三种方式的调制解调得到的功率谱密度、噪声曲线、星座图及误码性能,并对仿真结果进行了分析。(QPSK simulation design and Realization Based on MATLAB)

产生噪声调频干扰信号，并画出它的时域和功率谱(Noise FM jamming signal)

该程序用来实现Turbo编解码，而Turbo码是一种信道编码、且是一种纠错码，可以保证信息的传输质量,本程序是用matlab实现的!(The procedure used for Turbo coding and decoding, while the Turbo code is a channel coding, and is an error-correcting codes, can guarantee the quality of information transmission, the process is achieved using matlab!)

采样QPSK调制误码的仿真程序和星座图的仿真程序(QPSK moduel)

基于matlab的小电流接地系统单相故障分析，得到了系统对敌电压和线电压的波形图。(Matlab small current grounding system single-phase fault-based analysis, waveform diagram of system voltage and line voltage the enemy.)

matlab有关的常见的图像显示，图像信息读取，图像加噪，图形去噪，图像增强等一系列基本matlab实验代码及原理(matlab on the common image display, image information read, the image plus noise, graphics denoising, image enhancement and a series of basic principles of experimental code matlab)

soft reed solomon decode matlab

说明：  晶闸管三相桥式整流器的仿真（MATLAB20014）(The simulation of thyristor three-phase bridge rectifier)

像差分析，对像差进行模拟仿真，进行光学设计和像差校正(wavefront abberation analysis)