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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
Matlab实现现代功率谱估计
- Matlab实现现代功率谱估计 ,给出了思路和部分代码,是以份现在功率谱估计的基础材料
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.
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
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.
Matlab-FinishedOne
- 针对夹杂有白噪声的正弦信号的功率谱估计仿真-Mixed with white noise for sinusoidal signal simulation of the power spectrum estimation
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
levinsonf
- 信号为两个正弦信号加高斯白噪声,用levinson递推法进行功率谱估计。-Signal for two sinusoidal signal plus Gaussian white noise, with levinson recursive power spectrum estimation method.
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.
p_classical
- 经典的功率谱估计,平均周期图法实现,已经加上了详细的注释-Classical power spectrum estimation, the average periodogram implementation, has added a detailed comment
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
AR
- 有用BURG法实现AR模型功率谱估计的详细试验结果,对学数字信号处理的人很有帮助,能让你很好的理解BURG算法,和AR 模型。-BURG useful method power spectrum estimated AR model detailed test results, digital signal processing for school people very helpful, allowing you a good understanding of BURG algorithm,
burg
- 实现了用burg法进行功率谱估计,并比较它的结果-Burg achieved by power spectrum estimation method, and compare its results
memcof
- 最大熵法实现功率谱估计,内附算法实例及数据结果。-Maximum entropy power spectrum estimation method, containing the results of algorithm and data examples.
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)
用matlab做经典功率谱估计
- 用matlab做经典功率谱估计,文件包含程序直接法、间接法、Bartlett法、Welch法(PSD using MATLAB, including direct method, indirect method,Bartlett method, and Welch method)
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