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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
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
glp
- 计算太阳黑子的活动周期,分别利用周期图法,Lenvinson-Durbin法和Burg法求得其功率谱,并画出曲线,观察得到活动周期-Calculation of sunspot activity cycle, namely the use of periodogram, Lenvinson-Durbin and Burg obtained the power spectrum, and draw curve, observation cycle
esprit
- ESPRIT算法的经典功率谱估计程序,已运算过,下载即可使用-ESPRIT algorithm is the classic power spectrum estimation procedures have been operational before, you can use to download
work
- matlab,功率谱估计,包括PSD,DFT,最大熵等方法-matlab, power spectrum estimation, including PSD, DFT, such as maximum entropy method
spectralanalysis
- 谱估计(建立二阶AR模型)、利用FFT求解功率谱估计、利用AR模型的Yule-Walker方程求解模型参数等-Spectral estimation (the establishment of second-order AR model), using FFT to solve the power spectrum estimation using AR model of Yule-Walker equation model parameters such as
evlmem
- 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.
pujianfa
- 自己编的,经典的功率谱减法程序,不带VAD检测的程序-Own, the classic power spectrum subtraction procedure, non-VAD detection procedures
PSDEstimationforRandomSignalandRealizationinMatlab
- 从介绍功率谱的估计原理入手,分析了经典谱估计和现代谱估计两类估计方法的原理!各自特点及在Matlab中的实现方法,最后举了一个例子加以说明。 -Introduced the power spectrum from the estimated starting principle, analysis of classical and modern spectral estimation spectral estimation of the principle of two types of e
PSD_zqt
- 周期图法进行功率谱估计的函数,配套张旭东的课本习题-Periodogram power spectrum estimate of function, supporting the Textbook Exercise Zhang
zqt
- MATLAB经典周期图法功率谱估计对信号进行功率谱估计。-MATLAB classical periodogram power spectrum estimate of the signal power spectrum estimation.
hosa_d
- 对于一个随机的非高斯信号或者一个确定信号有很多的信息(远不止功率谱...)。本工具用来分析高阶谱和时频分布。-For a random signal or a set of non-Gaussian signals have a lot of information (far more than the power spectrum ...)。 This tool is used to analyze higher-order spectra and time-frequency distrib
zhouqitu
- 利用周期图法对信号进行功率谱估计,源代码,有详细的注解,供参考-Periodogram method using the signal power spectrum estimation, source code, there are detailed notes for reference
pisarenko
- 功率谱估计中 pisarenko 方法的多种实现-Power spectrum estimation in a variety of methods to achieve pisarenko
OFDM
- OFDM 的全套程序, 包括调制, 解调, 误码, 眼图, 功率谱-OFDM complete set of procedures, including modulation, demodulation, error, eye diagrams, power spectrum. . .
BOC信号功率谱密度仿真
- 关于GPS系统中的BOC调制信号的功率谱密度仿真,并且包含了其衍生信号MBOC信号的CBOC和TMBOC的仿真对比
新建文件夹
- 可以简易分析脉搏波的频谱和功率谱,附有一份脉搏波数据(It is easy to analyze the spectrum and power spectrum of pulse wave)
功率谱生成风速序列
- 可用于各种功率谱生成风速时间序列,只需要提供一些时均信息等
功率谱估计(重叠段/非重叠段)
- 加窗平均周期图法是对分段平均周期图法的改进。在信号序列x(n)分段后,用非矩形窗口对每一小段信号序列进行预处理,再采用前述分段平均周期图法进行整个信号序列x(n)的功率谱估计。由窗函数的基本知识可知,采用合适的非矩形窗口对信号进行处理可减小“频谱泄露”,同时可增加频峰的宽度,从而提高频谱分辨率。