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活塞式压缩机级间管道压力脉动matlab小程序(a matlab program to calculate the pressure pulsation of piston compressor interstage pipe)

本程序为《结构分析的有限元法与Matlab程序设计》的源程序，与书本配套，同时也是学习《有限单元法》入门的相关资料。教材提供梁、杆单元等一系列的编程案例。(This procedure is "structural analysis of finite element method and Matlab programming" source code, and books supporting, but also learning "finite element method" entry related information. The textbook provides a series of programming cases, such as beam and rod units.)

parks maclean algorithm for low pass filtering

一个OFDM符号128个有效符号，插入128个虚拟子载波 符号率（即有效数据率）fsymbol，而发送速率（需要包括虚拟子载波）2fsymbol 输入的数据需要2倍的发送数据率，以便进行内插，实现位定时跟踪，即4倍fsymbol采样率的调制信号 OFDM symbol Nfft=128 points 一个OFDM符号数据点 Nfft*2 = 256 ， Guard Interval点 ＝Ng*2=64 ( a OFDM symbol 128 effective symbols, insert 128 virtual sub-carrier symbol rate (i.e. valid data rate), and fsymbol sending rate (need to include virtual sub-carrier) 2fsymbol input data need 2 times the sending data rate for interpolation, realize a timing tracking, namely fsymbol sampling rates four times the modulation signal OFDM symbol Nfft = 128 points a OFDM symbol of data points Nfft* 2 = 256, Guard Interval point = Ng* 2 = 64 )

This example descibles background subtraction algorithm. video was recorded at sanfrancisco

用差分方法计算带时变系数的波动方程,界面可视。(simulate the wave functions with time-varying coefficients)

说明：  非平稳信号的一些处理函数，包括计算瞬时频率和群延迟及非平稳信号的生成。(Some non-stationary signal processing functions, including the calculation of the instantaneous frequency and group delay and non-stationary signal generation.)

coding. Input QUALITY determines the amount of information that 3/20/06 by R.Woods to correct an eob coding problem, to check the quality input for <

A new non-linear least squares (NLS) DRSS location estimator that uses correlated shadowing information to improve performance is introduced. The existing maximum likelihood (ML) estimator and Cram′er Rao lower bound (CRLB) for RSS-based localization given do not account for correlated shadowing.

包括调制，解调，信噪比计算，欢迎大家下载学习，小波包分析提取振动信号中的特征频率。( Includes the modulation, demodulation, signal to noise ratio calculation, Welcome to download the study, Wavelet packet analysis to extract vibration signal characteristic frequency.)