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bpsk qam gmsk fsk modulation for programming

用ODE45计算二阶微分方程组，实例为双球摆仿真(Use ODE45 function to calculate second-order differential equation)

说明：  仿真一个QPSK调制信号通过一个平坦瑞利衰落的AWGN信道的误码率(simulate the BER of a QPSK modulated siganal using an AWGN channel with flat rayleigh fading)

Circuit analysis for circuits in electronics

Y.T.Chan在其论文中提出一种具有解析表达式解的非递归双曲线方程组解法，该算法具有计算量小，速度快，且当TDOA参数估计误差服从高斯分布的情况下，定位精度较高。 本程序借鉴Chan论文中提出的算法，基于MATLAB程序，在已知TDOA估计参数的情况下，对信号源位置进行估计。 希望能够对研究 干扰源定位、无源定位的同志提供帮助。(YTChan in his paper presents a solution with the analytical expression for the non-recursive solution of hyperbolic equations, the algorithm has calculated the amount of small, fast, and when the TDOA estimation error of Gaussian distribution in the case, positioning accuracy than high. The papers presented in the program learn from Chan algorithm, MATLAB-based program, known TDOA estimation parameters in the case, the signal source location estimates. Hope to the study of interference location, passive positioning of the comrades to help.)

matlab实现对一声音信号的功率谱与时频分析(matlab realize the power spectrum of a sound signal with the frequency analysis)

实现人员出入管理，输入和输出,人员的添加，管理！(to made the people s manage!)

Matlab在图像处理与目标识别方面的应用实验，3个数字图像处理作业，车牌识别，边缘检测，包括实验数据代码以及报告，matlab实现(Matlab image processing and target recognition in the application of experimental)

Adaptive thrsholding, OTSU method and also performing bluring in order to test for the above thresholding techniques

采用距离环法对地杂波进行建模并仿真其功率谱(model ground clutter by ranging ring and simulate its power spectrum)