Rungekutta4th

说明：  ：该文首先研究了单认知用户能量检测算法的检测性能和检测灵敏度与检测时长和噪声短时间内平均功率波 动性之间的关系，得出检测性能和检测灵敏度随噪声短时间内平均功率波动性的增大而急剧下降的结论，在低信噪 比时尤为明显；针对检测性能和检测灵敏度随噪声短时间内平均功率波动性的增大而急剧下降，提出了基于多用户 协同能量检测算法。仿真表明，在低信噪比环境下，即使噪声短时间内的平均功率存在较大的波动性，只要适当地 增加协同检测的用户数，仍可获得较为准确的检测性能。(In this paper, detection performance and detection sensitivity with detection duration and noise average power fluctuation in short time is investigated firstly. Performance accuracy and detection sensitivity drop quickly with noise average power fluctuation increasing and it is worse when signal-to-noise ratio lower. Considering the characteristic, a novel new energy detection algorithm based on cooperative is presented. Simulations show that the proposed scheme improves antagonism of noise average power fluctuation in short time and gets a good detection performance as long as increasing the number of cooperative detection users.)

This is a Buck Boost Converter Simulation in MATLAB Simulink.

一个很好的matlab总svm组建，调试后非常好用(A good general svm matlab formed, was very useful debugging)

说明：  噪声子空间法 进行波达估计 算法较复杂 不过效果明显(Noise subspace method-of-arrival estimation algorithm significantly more complex, however the effect of)

在matlab图片处理中加入噪声，是图片不再清晰(Add noise in matlab image processing, is no longer clear picture )

一些循环平稳子程序，用于对循环平稳信号处理(Some Cyclostationary Subroutine, for cyclostationary signal processing)

Rotate xticks label of a 2d graph

this is the code to determine frequency of spoken speech

说明：   用Hough变换进行曲线、直线等的参数提取(With the Hough transform curve, straight line extraction, etc.)

对两幅图片进行无缝融合，使用的是泊松原理，融合效果优秀(For seamless integration of two images, using a Poisson principle, excellent fusion effect)