guangliu

64 QAM Constellation Diagram

说明：  基于遗传算法的排课表的代码，通过调试，可以使用，如果想做成系统，请自行完成工程文件，这里只是排课的代码。(Time-table of the code, debugging, you can use if you want to create, please complete the project on its own, only here Course Scheduling code.)

克里金法假定采样点之间的距离或方向可以反映可用于说明表面变化的空间相关性。克里金法工 具可将数学函数与指定数量的点或指定半径内的所有点进行拟合以确定每个位置的输出值。克里金法是一个多步过程；它包括数据的探索性统计分析、变异函数建模 和创建表面，还包括研究方差表面。当您了解数据中存在空间相关距离或方向偏差后，便会认为克里金法是最适合的方法。该方法通常用在土壤科学和地质中。(This function completes what I have started with the functions variogram and variogramfit. It is not intended to be a highly optimized code for performing kriging but may have educational value. Note that for using kriging, you should download the latest version of variogramfit. kriging uses ordinary kriging to interpolate a variable z measured at locations with the coordinates x and y at unsampled locations xi, yi. The function requires the variable vstruct that contains all necessary information on the variogram. vstruct is the forth output argument of the function variogramfit. This is a rudimentary, but easy to use function to perform an ordinary kriging interpolation. I call it rudimentary since it always includes ALL observations to estimate values at unsampled locations. This may not be necessary when sample locations are not within the autocorrelation range but would require something like a k nearest neighbor search algorithm or something similar. Thus, the alg)

单位圆的内插实现，里面有4种内插算法：拉格朗日插值、牛顿插值、分段线性插值、分段样条插值、以及插值误差范数估计等等(Interpolation to achieve the unit circle, which has four kinds of interpolation algorithms: Lagrange interpolation, piecewise-linear interpolation, sub-spline interpolation, as well as Norm interpolation error estimates, etc.)

GPS 导航定位系统卡尔曼滤波 假定船舶向某固定方向航行，以港口码头的出发处为坐标原点。 假定船舶在二维平面上运动，初始位置为（-100m，200m），水平运动速度为 2m/s， 垂直方向运动速度为 20m/s，GPS 接收机的扫描周期为 T = 1s，观测噪声的均值 为 1，方差为 100。 采用卡尔曼滤波跟踪船舶航行轨迹。 1、绘出真实轨迹、观测轨迹、滤波后轨迹 2、滤波前误差、滤波后误差(Calman filtering of GPS navigation and positioning system)

计算均匀线性阵DOA估计克拉美罗界的代码(a code for compute Cramer-Rao bound for direction of arrive of uniform linear array)

基于虚拟力的matlab覆盖算法..虽然还有点缺陷 但完成了一大部分~~~(matlab virtual force)

for fem matlab for solving all 2D and 3D problem

用于文本分析和分类的pLSA(tHQQOWZ)的Matlab算法，含有测试数据及算法原理介绍。也可用于图像分析。相比原来的版本，增加了示例程序DIJOHfK，以实现可视化效果，用户更容易使用和理解pLSA算法。(For text analysis and classification of Matlab (Temp) pLSA algorithm, containing the test data and algorithm theory. Can also be used for image analysis. Compared to the original version, an increase of sample program DIJOHfK, in order to achieve the visual effect, the user is more easy to use and understand the pLSA algorithm.)

说明：  带通滤波。该程序用matlab实现梯形窗的带通滤波，可以直接调用(Band-pass filter. Trapezoidal matlab implementation of the program window with a band-pass filter, can be called directly)