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基于MATLAB GUI的“滤波器设计软件”设计(MATLAB GUI filter design software-based design)

In a series of papers in recent years new structures for coherent M-PSK (M-ary Phase Shift Keying) receivers were suggested. These include structures for carrier phase detectors for the carrier PLL (Phase Lock Loop), carrier PLL lock detectors, symbol timing error detectors, symbol synchronization PLL lock detectors, carrier and symbol PLL loop filters, and SNR (Signal to Noise Ratio) estimators

瑞丽衰落和莱斯衰落的对比 瑞利衰落（Rayleigh Fading）：在无线通信信道中，由于信号进行多径传播达到接收点处的场强来自不同传播的路径，各条路径延时时间是不同的，而各个方向分量波的叠加，又产生了驻波场强，从而形成信号快衰落称为瑞利衰落。瑞利衰落属于小尺度的衰落效应，它总是叠加于如阴影、衰减等大尺度衰落效应上。(rice fading and rayleigh fading)

an iris recognition method

monte_carlo法求解非线性规划，有中文注释，可以参考学习(monte_carlo method for solving nonlinear programming, a Chinese comments, you can refer to learning)

天线方向图的波达方向，用于描述回波的方向图3，可以用于初学者学习使用(DOA antenna pattern, used to describe the echo pattern 3, can be used for beginners to learn to use)

dijkstra输入邻接矩阵，起讫点，输出最短路径(This function is built on the dijkstra.m function written by Jorge)

总体经验模态分解（EEMD）的程序，适合初学者学习。(Overall empirical mode decomposition (EEMD) procedures, suitable for beginners to learn.)

读入一幅256*256图像，将它分成8*8pixel的若干块，对每块做DCT变换，保留Z型顺序的若干变换系数，进行IDCT重构图像，计算重构图像的信噪比(Reading a 256* 256 image, it will be divided into several blocks of 8*8 pixel, keep each optimal Z transformation of sequence number, IDCT transform coefficient calculation reconstruction image reconstruction images,and the signal-to-noise ratio)

gps信号的跟踪环程序 可以实现最基本的载波环跟踪功能(gps signal tracking loop program can achieve the most basic function of the carrier tracking loop)