scholarly journals Power Spectrum Estimation for Frequency Domain Ambient Modal Analysis

2022 ◽  
Author(s):  
Mani Venkatasubramanian ◽  
Chad Thomas ◽  
Mohammadreza Maddipour Farrokhifard
Keyword(s):  
Power Spectrum ◽  
Modal Analysis ◽  
Frequency Domain ◽  
Spectrum Estimation ◽  
Power Spectrum Estimation

AR Model Power Spectrum Estimation and MATLAB Simulation

2014 ◽  
Vol 971-973 ◽  
pp. 1561-1564 ◽  
Author(s):  
Min Ji ◽  
Jing Feng He ◽  
You Qiang Lai
Keyword(s):  
Parameter Estimation ◽  
Power Spectrum ◽  
Frequency Domain ◽  
Ar Model ◽  
Model Parameters ◽  
Spectrum Estimation ◽  
Actual Situation ◽  
Matlab Simulation ◽  
Power Spectrum Estimation ◽  
Advantages And Disadvantages

the power spectrum estimation researches various characteristics of signals in the frequency domain. The purpose is that signals are recognized and extract .Because these useful signals are submerged in noise .The article introduces estimation in the classic power spectrum and modern power spectrum. It is important that algorithm of AR model parameters are introduced in the parameter estimation of several typical. It discusses the advantages and disadvantages of various algorithms, and with the help of MATLAB platform, the various algorithms of power spectrum are simulated, in order to undertake choosing according to the actual situation.

The Design of Wave Data Frequency-Domain Analysis Program

2011 ◽  
Vol 403-408 ◽  
pp. 1576-1579
Author(s):  
Shou Jun Wang ◽  
Nan Liu
Keyword(s):  
Power Spectrum ◽  
Frequency Domain ◽  
Wave Spectrum ◽  
Domain Analysis ◽  
Frequency Domain Analysis ◽  
Specific Method ◽  
Spectrum Estimation ◽  
Power Spectrum Estimation ◽  
Wave Data ◽  
Data Frequency

In this paper, a specific method is presented for designing program of wave data frequency-domain analysis, which includes basic principle and program implementation of Fast Fourier Transform, programming of power spectrum estimation and calculation and display of each order moment of wave spectrum. In the process of introducing FFT, we present specific program flow chart. While in the power spectrum estimation, this article mainly refers to the power spectrum calculation and power curve smoothing. According to the practical test, the program is stable, expeditious and accurate highly.

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