Achieve Power Spectrum Estimation Baded on MATLAB
Chunxing Wang · Journal of Qufu Normal University · 2011
Power spectrum estimation is the power spectrum which uses the finite data to estimate the power spectrum of signal,it is widely applied in many fields such as radar,sonar,communication,geologic exploration,chronometer,biomedicine fields and so on.Power spectrum estimation can be separated into classic spectrum estimation and modern spectrum estimation.In this paper,the Welch algorithm in the classic spectrum estimation is given.At present,there are two methods to deal with estimation in the classic spectrum estimation,which are the periodic graphology method and the autocorrelation method,while the Welch algorithm is improved on the basis of the periodic graphology method.