FFT

已知轴线方程,把圆柱按轴线分若干段，在每个断面画圆，圆的法线就轴线的切向方向。柱面画若干平行于轴线的线条，其中用到平行单位矢量点积等于1，不平行的结果是[-1，1）。 (Axis equations are known, according to the axis of the cylinder divided into several segments, each section in the circle, the circle axis normal to the tangential direction. Number of cylinders parallel to the axis of drawing lines, which use the parallel unit vector dot product is equal to 1, the result is not parallel to [-1,1). )

Matlab files of chapter 5 kalman filtering 3 edition of grewal

计算曲柄滑块的matlab程序，可以运行，机械学基础上机课(Calculation of crank slider matlab program)

说明：  uwb中的矩形波的产生，估计带宽，产生固定持续时间的波(the rectangular wave, an estimated bandwidth, have a fixed duration of the wave)

This is code for QRS peak detection in ECG signal. An ECG signal is generated and it is been filtered. The output is Filtered output.

用于大矩阵，采用矩阵运算优先速度的dtw算法实现。 dtw:Dynamic time warping 动态时间弯曲算法(dtw:Dynamic time warping )

包括四元数的各种计算,实现用SDRAM运行nios，同时用SRAM保存摄像头数据，仿真图是速度、距离、幅度三维图像。( Including quaternion various calculations, Implemented with SDRAM run nios, while saving camera data SRAM, FIG simulation speed, distance, amplitude three-dimensional image.)

说明：  这是一个快速的三维图像双边滤波的实现。这个过滤器平滑图像的同时保留边缘，但在其最直接的实现是非常计算的要求，特别是对大型3D图像。快速双边滤波是一种近似技术，极大地提高了计算速度。我的实现严格遵循Matlab版的快速二维滤波器，只是做了一些修改(This is an implementation of fast bilateral filtering for 3D images. This filter smoothes the image while preserving edges, but in its most straightforward implementation is very computationally demanding, especially with large 3D images. Fast bilateral filtering is an approximation technique which drastically improves the speed of computation. My implementation closely follows the Matlab version of the fast 2D filter with some modifications)

数据预处理，采用插值和曲线拟合来预处理数据(data preprocessing)

利用MATLAB爬虫示例，自动下载GPM-IMERG-FINAL数据(Automatically download GPM-IMERG-FINAL data using MATLAB crawler example)