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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
cyclic_cross_periodogram
- 相位调制编码信号的循环谱估计程序....
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
PSD.rar
- 求功率谱估计常用的几种方法,包括周期图法,Welch 法,和AR模型法。,For power spectrum estimation commonly used in several ways, including periodogram, Welch law, and the AR model.
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
PSD.rar
- 现代谱估计实验,运用Burg算法,里面包含了完整的实验报告,Modern spectral estimation experiments, the use of Burg algorithm, which contains a complete test report
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
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
三种现代功率谱估计方法性能研究
- 三种现代功率谱估计方法性能研究,该文章能很好帮你理解功率谱估计的基本原理和实现步骤(Performance study of three modern power spectral estimation methods)
周期谱估计程序和数据
- 周期谱估计matlab 程序还有一些数据分析,需要的自行下载(Periodic spectrum estimation matlab procedures, there are some data analysis, the need for self Download)
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.)
空间谱估计理论与算法
- 空间谱估计理论与算法是阵列信号处理的重要研究方向之一,这本书是经典的参考书之一,希望对大家有用!(Spatial spectrum estimation theory and algorithm is one of the important research directions of array signal processing. This book is one of the classic reference books and it is hopeful for everyone!)
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