Meditation

Matlab编写的相位展开(相位解缠)，程序实现两种相位展开(相位解缠)的算法，一个是质量图导引路径积分相位展开算法，另一个是Goldstein的枝切法。(2D PHASE UNWRAPPING ALGORITHMS for the phase quality guided phase unwrapping method and Goldstein s branch cut phase unwrapping method)

This is a matlab code for drawing EXIT chart. This is a chart that is used for performance evaluation in different coding and decoding techniques. This is an mfile.

code matlab pr low filter

Krivenko filter bank for glucose purposes

用于Granger因果检验的Matlab代码(Matlab code for the Granger Causality Test)

考虑L的三个不同值：L＝256（3个数据段），L＝128(7个数据段)和L=64（15个数据段）。各自的谱估计图如上图所示。可以明显的看到，加窗明显的减小了频谱上的假谱峰，但也更加进一步平滑了谱峰。所以，对于L＝64的情况，在ω＝0.8π的谱线可以很确定的辨认，但是那两个靠近的谱峰不容易区分。对于L＝128的情况，这种情况提供了在分离和检测间最好的均衡。当然，对于在L＝256时的情况，效果是更好的，能够从谱估计图上明显的分辨出三条谱线的存在以及它们幅度关系的强弱。 除了Welch法外，还可以采用对多个周期图求平均的功率谱估计方法的其他方法如Bartlett法等等，在功率谱估计上也能取得较好的结果。(consider three different values : L = 256 (3 data), L = 128 (7 data) and L = 64 (15 data). Their spectral estimation map as shown in Fig. It is clear to see that increase significantly decreasing window of the spectrum of false peaks, but much more to further smooth the peaks. Therefore, L = 64, in the case = 0.8 spectrum can determine the identification, but that the two peaks around is not easy to distinguish. L = 128 for the situation, which provided the separation and detection among the best balanced. Of course, L = 256 in the case, the effect is better, from the spectral estimation map clearly distinguish between the three lines of the existence and their relationship to the rate of strength. In addition to Welch law, but also can be used to map multiple cycle for the average power)

说明：  基于pde的图片去噪算法，用于去除图片白噪声(Pde-based image denoising algorithm, white noise is used to remove pictures)

克里格法是地统计学的主要内容之一，从统计意义上说，是从变量相关性和变异性出发，在有限区域内对区域化变量的取值进行无偏、最优估计的一种方法；从插值角度讲是对空间分布的数据求线性最优、无偏内插估计一种方法。(Kriging method is one of the main contents of geostatistics. Statistically speaking, it is a method of unbiased and optimal estimation of regionalized variables in a limited area from the point of view of correlation and variation of variables; from the point of view of interpolation, it is a method of seeking linear optimum and unbiased interpolation estimation of spatial distribution data. Law.)

说明：  对复合奇异的蒙特卡洛模拟程序，亚洲期权、障碍期权的集合体 (Monte Carlo simulation of composite extoic option)

说明：  采用声子晶体能带理论求解周期性结构振动特性，采用解析法编程，适合初学者学习参考(Wave propagation in periodic structures band-gap behaviours)