attachments_2009_03_25

带通滤波器的设计及滤波例子，给出了30~50Mhz的一个带通滤波器的设计实例(Bandpass filter design and filtering example is given a 30 ~ 50Mhz band-pass filter design example)

this file finds EUAC of a given cash flow

帧同步算法的性能上线分析程序，同步码使用的是7位baker码。(Frame synchronization algorithm performance on-line analysis program, the synchronization code using seven baker yards.)

本算法是个B样条曲线拟合算法，包括2D的和3D的两种曲线拟合算法。用户可以自己设定拟合的点数，也可以让算法根据拟合效果自动确定。(This algorithm is a B-spline curve fitting algorithms, including 2D and 3D two curve fitting algorithm. Users can set their own fitting points, but also allows the algorithm automatically determined according to the fitting effect.)

摩托罗拉 hc908sr12的开发代码 codewarrior软件开发的(Motorola hc908sr12 development code CodeWarrior software development)

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)

用matlab编程，程序将PCA算法用于图像中物体轮廓提取，可以看到在轮廓处，特征值会出现剧烈震荡(With matlab programming, program the PCA algorithm is used to extract the outline of objects in the image, you can see in the outline at the eigenvalues ​ ​ will be turbulent)

最小熵解卷积，通过解卷积运算降噪，且能实现故障特征分离(Minimum entropy deconvolution, deconvolution operation by noise, and can achieve separation of fault features)

说明：  克里金法（Kriging）是依据协方差函数对随机过程/随机场进行空间建模和预测（插值）的回归算法(The implement of Kriging)

高速铁路路基沉降是一个复杂的系统过程,涉及不同时期、不同工况,选用单一的预测模型不足以反映路基整体的变形规律.Logistic模型及Verhulst模型的曲线均为S形,可以反映全过程的地基沉降与时间的关系.针对路基填筑期和降水期两个时段利用MATLAB软件编制程序计算模型参数,得到Logistic模型和灰色Verhulst模型,进而求得两者的最优加权组合模型.对比结果表明:在路基填筑期由两者的最优加权组合模型预测得到的结果与实测结果较吻合,拟合精度高于单一模型 而在降水期Verhulst模型的预测值更接近实测值,平均相对误差约为1.75％,拟合精度较高.(High-speed railway subgrade settlement process is a complex system involving different times and in different conditions, the choice of a single forecasting model does not adequately reflect the overall deformation of roadbed. Curve Logistic model and Verhulst models are S-shaped, the whole process can be reflected foundation settlement versus time. against roadbed construction period of two hours and precipitation using MATLAB software programming model parameters, the Logistic model and gray Verhulst model, and then get the optimal model of a weighted combination of the two. comparative results indicate : results and experimental results in the roadbed construction period by the weighted combination of the best of both models predicted than the anastomosis fitting accuracy than a single model precipitation predicted value of Verhulst model closer to the actual value of the average relative error approximately 1.75 fitting accuracy.)