GG_GK

主要讲matlab在数学建模中的作用，实例有电阻问题，给药方案问题等。(Matlab main stresses in the role of mathematical modeling, examples of problem there is resistance, administration of the program and so on.)

说明：  matlab中解方程得应用，现形微分方程的解法等(matlab equation was applied in solution, the solution of differential equations edition, etc.)

说明：  实现flody算法，功能：计算任意两点之间距离(Achieve flody algorithm functions: calculate the distance between any two points)

Extended Kalman Filter for GNSS processing

这个程序得到的lambda_1不能当做最大lyapunov指数，因根据所作出的曲线选择线性区进行拟合，此处的处理是为了程序的方便 (This program was not as maximum lyapunov lambda_1 index, based on curve fitting due to the linear region selection made, in order to deal with here is a program of convenience " )

说明：  带数据的经济调度方案，只包含火电厂，没有其他能源。(he economic dispatching scheme with data only includes thermal power plants, without other energy sources.)

灰度图像的腐蚀与膨胀代码，很经典！对初学者很有用的。(Corrosion and expansion of gray image code, it is classic! Useful for beginners.)

In this paper, we investigate the timing and carrier frequency offset (CFO) synchronization problem in decode and forward cooperative systems operating over frequency selective channels. A training sequence which consists of one orthogonal frequency-division multiplexing (OFDM) block having a tile structure in the frequency domain is proposed to perform synchronization. Timing offsets are estimated using correlation-type algorithms. By inserting some null subcarriers in the proposed tile structure, we propose a computationally efficient subspace decomposition- based algorithm for CFO estimation. The issue of optimal tile length is studied both theoretically and through simulations. By judiciously designing the tile size of the pilot, the proposed algorithms are shown to have better performance, in terms of synchronization errors and bit error rate, than the time-division multiplexing-based training method and the computationally demanding space-alternating generalized expectation-maximization

一般KF和UDUKF的比较源程序代码，运行文件夹中的result.m文件。(General comparison of KF and UDUKF source code, run the file in a folder result.m file.)

基于支持向量机的区域水安全预警模型及其应用(Early-warning model and its application of regional water security based on support vector machine)