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用Welch法进行功率谱估计
- 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
基于MUSIC方法功率谱估计的matlab仿真
- 基于MUSIC方法功率谱估计的matlab仿真,包含实验详细报告,源码,运行结果,及其分析。,MUSIC-based method of power spectrum estimation matlab simulation, including a detailed report on the experiment, source, run results, and analysis.
周期图法谱估计需要对信号序列“截断”或加窗处理
- 周期图法谱估计需要对信号序列“截断”或加窗处理,其结果是使估计功率谱密度为信号序列真实谱和窗谱的卷积,导致误差的产生。本程序分别设计了周期图法,最大熵功率谱估计和Welch法以及它们的对比,最大熵功率谱估计目的是最大限度地保留截断后丢失的“窗口”以外信号的信息,使估计谱的熵最大。-Periodogram spectrum estimation signal sequence needs to " cut off" or add the window handle, the
p_morden.rar
- 用Matlab实现现代功率谱估计,主要有Levinson法,Burg法,协方差法及修正协方差法,四种方法的结果放到一起进行比较,有详细的注释,Using Matlab implementation of modern power spectrum estimation, the main has Levinson Law, Burg method covariance method covariance method, and the amendment, four ways to put to
AR.rar
- matlab环境下用AR谱估计算法实现AR模型谱估计,matlab environment AR spectrum estimation algorithm using AR model spectrum estimation implementation
应用music算法和esprit算法在进行谱估计
- 应用music算法和esprit算法在进行谱估计中的matlab源程序 ,Music and esprit algorithm application in spectral estimation algorithm in the matlab source code
F1
- AR谱估计算法的matlab仿真,包括Yule-Walker方法、协方差方法、修正协方差方法和burg递推法等-AR spectral estimation algorithm matlab simulation, including the Yule-Walker method, covariance method, modified covariance method and the recursive law burg
capon
- CAPON谱估计方法的matlab源代码,已经通过验证了-CAPON spectral estimation methods matlab source code has been validated by
Periodogram-powe
- 平均周期图法和平滑平均周期图法估计功率谱 从经典功率谱估计周期图法原理入手,从理论上分析了其存在的局限性,借助Welch算法对其进行修正。依靠Matlab强大的数值分析和信号处理能力进行实验!! 用周期图法和welch法分别估计了一下信号的功率谱密度。采样频率200Hz,时间序列长度2048,FFT数据点数2048。其中welch法使用hanning窗,窗口长度600.-Average periodogram and periodogram smoothing method to est
Periodogram
- 利用周期图法对序列进行功率谱估计,数据窗采用汉明窗-Sequences using periodogram method for power spectrum estimation, the data window with Hamming window
auto_correlation
- 用Blackman-Tukey方法(自相关法)实现对任意输入的实序列函数x(n)作功率谱估计。-Using Blackman-Tukey method (autocorrelation method) to achieve the actual sequence of arbitrary input function x (n) for power spectrum estimation.
ARburg
- AR模型,用伯格法求谱估计曲线,算法简单实用-AR model method using Burg spectral estimation curve, the algorithm is simple and practical
music
- 《空间谱估计原理与算法》多重信号分类法估计matlab源代码-" Space Spectrum Estimation Principle and Algorithm" multiple signal classification method estimates matlab source code
Spectrum_estimation_and_array_signal_processing.ra
- 谱估计及阵列信号处理算法仿真库,包括著名的ESPRIT、CAPON、MUSIC等现代谱估计算法,是高分辨率数字信号处理算法的极好参考。-Spectral estimation and array signal processing algorithm for simulation of the Treasury, including the well-known ESPRIT, CAPON, MUSIC, such as modern spectral estimation algorithm,
Burg
- 现代数字信号处理Burg法功率谱估计,有详细的备注-Burg method of modern digital signal processing power spectrum estimation, contains a detailed Remarks
用最小二乘法和svd-tls法对arma过程进行功率谱估计并比较结果
- 分别用最小二乘法和svd-tls法对arma过程进行功率谱估计并比较结果。包含实验目的,步骤,程序,结果,分析。-Least square method, respectively, and svd-tls on arma-power spectrum estimation process and the results of the comparison. Contains experimental purposes, steps, procedures, results, analysis.
图8-6-2随机信号不同取样长度时的功率谱估计0928f
- 随机信号不同取样长度时的功率谱估计,matlab实现,用于数字信号处理-random sampling signal different lengths of power spectral estimation, Matlab achieve for digital signal processing
welch法作功率谱
- 利用Welch法作功率谱估计,与直接功率谱估计法相比,Welch法采用多段平均的方法改进了直接功率谱估计方法(Welch method is used to make power spectrum estimation. Compared with direct power spectrum estimation method, Welch method uses multi-stage average method to improve the method of direct power s
matlab 功率谱估计
- 计算时间序列,尤其是观测数据中的变量的功率谱估计的例子,直接修改输入数据即可使用。(An example of computing power spectrum estimation of time series, especially the variables in observation data, can be used directly to modify the input data.)
几种常用功率谱估计法
- 几种常用的功率谱估计方法:相关函数法(BT 法),周期图法( periodogram),Bartlett 法,Welch 法,AR 功率谱曲线( p=50)(Several commonly used power spectrum estimation methods: correlation function method (BT method), periodogram method, Bartlett method, Welch method, AR power spectrum curv