2D桁架结构有限元分析

it is a program to identify the persons using his own iris

本文提出了一种适用于低轨卫异扩频通信系统的多普勒频移快捕方法.该方法基于数字匹配滤波器及自动频率控制环路_利用数字匹配滤波器的囚码快捕特性及其输出主相关峰值对频偏的敏感性，缩短多普勒频移的 捕获时间.论文首先推导了多普勒频移的平均捕获时间表达式，然后根据数值分析结果得到了准最佳捕获判决策略，最后通过比较验证了该快捕方法相对于传统串行捕获方法在性能上的提高. (This paper presents a low-orbit health for different spread spectrum communication system fast catching the Doppler shift method, which based on digital matched filter and automatic frequency control loop _ prisoners using digital matched filter code features rapid acquisition and the output of the main correlation peak frequency deviation of the sensitivity of the Doppler frequency shift to shorten acquisition time. paper first derive the mean Doppler shift acquisition time expression, then the numerical results obtained quasi-optimal capture decision strategies, and finally verified by comparing with the rapid acquisition method to capture the traditional method of serial improvement in performance.)

ZF-MMSE预均衡，代码真实有效，可使用。。。。。。(ZF-MMSE pre-equalization, code is valid, can be used. . . . . .)

HHT gcc代码，专门用于希尔伯特黄变换。(HHT gcc code, specifically for the Hilbert-Huang Transform.)

这是m序列的matlab调制和解调程序，值得一看哦(This is the Matlab m-sequence modulation and demodulation process, an eye-catcher oh)

三相SVPWM整流、逆变双向并网变换器，可以运行。(Three phase SVPWM rectifier, inverter bi-directional grid converter, you can run.)

MATLAB里的simulink的dspbuilder设计的图像高斯滤波，可直接运行，并可通过matlab转化到quartus中并下载到FPGA运行(MATLAB simulink in the design of the image of dspbuilder Gaussian filter can be run directly, and transformed by matlab to quartus and downloaded to the FPGA run)

一种OMP算法，用于压缩感知稀疏信号恢复算法，性能比传统的OMP好。(One kind of OMP algorithm for compressed sensing sparse signal recovery algorithms, the performance is better than the traditional OMP.)

说明：  首页-MATLAB-数据处理-一个文件数据处理小程序(Home-MATLAB-data-processing- a small data-processing procedures document)

说明：  对故障数据的小波包分解与信号重构、小波包能量特征提取 暨 小波包分解后实现按频率大小分布重新排列，并进行降噪处理。(After wavelet packet decomposition and signal reconstruction, wavelet packet energy feature extraction and wavelet packet decomposition, the fault data can be rearranged according to the frequency distribution, and the noise can be reduced.)