3db

说明：  采用matlab对两组离散点进行拟合，并在同一X轴不同Y轴（两个坐标轴中）画出拟合后的曲线，以及离散在两个y轴的单个点，在matlab中运行一次之后，将坐标轴切换到第二个y轴再次点运行即可，站长我想下modal-analysis，和examples请批准吧(Using matlab to fit the discrete points on the two groups, and different at the same X-axis Y-axis (two axes in) draw the curve fitting, and the y-axis in two discrete single point in time to run matlab After the switch to the second axis y-axis points can be run again, I think the next chief modal-analysis, and examples, please approve it)

用于计算GPS卫星坐标计算时读取广播星历文件时使用(Read the broadcast ephemeris file used to calculate GPS satellite coordinates calculation and use)

基于牛顿拉夫逊的潮流计算，这个简单可以直接查看结果，9节点(Can directly view the results based on the Newton Raphson power flow calculation, this simple)

用Blackman-Tukey方法,MUSIC,MV,PHD,Welch方法来估计信号的功率谱(Use Blackman-Tukey,MUSIC,MV,PHD and Welch methods to estimate power spectrum density.)

David G.Lowe的SIFT算子在Matlab环境下的实现，尺度不变的特征提取，并对两幅图片的特征点进行匹配，运行前要把siftWin32文件放在Matlab的win目录下，具体请参照README。默认为输入为灰度图像，要处理彩色图片请先转灰度rgb2gray() (The realization of SIFT operator David G.Lowe in the Matlab environment, the scale invariant feature extraction, matching and pictures of the two feature points, the siftWin32 file in the Matlab win directory to run before, please refer to the specific README. The default is the input for the gray image to color image processing, please turn gray by rgb2gray ())

基于星座图的QPSK仿真，易于理解QPSK的原理(QPSK constellation based on simulation, and easy to understand the principles of QPSK)

MATLAB低通滤波程序，很好的源代码，希望对大家有用(filter)

具有蒸发率的水循环算法，用来解决无约束优化问题，这是一个比较新的算法(Has the rate of evaporation of the water cycle algorithm, which is used to solve unconstrained optimization problems, this is a relatively new algorithm)

Find peaks in signal. Look for local maxima and minima. In the window of search find the maximum maxima and the minimum minuma. Return two values which are the maximum and the minimum local maximas

MIMO-OFDM channel estimation 。是基于mmse准则的，欢迎大家下载使用。(MIMO-OFDM channel estimation. Is based on the MMSE criteria, welcomed everyone download.)