In order to realize the FFT algorithm more flexibly and effectively, this paper analyzed four kinds of amplitude
spectrum or power spectrum correction methods, that is, ratio correction method, energy centrobaric correction method,
phase difference method and FFT + FT spectrum analysis method. On this basis, a double-window function spectrum
estimation algorithm was introduced, which was a kind of conjoint analysis algorithm with rectangular window function
and improved window function. The algorithm could improve the amplitude estimation accuracy in the case of not
reducing the frequency resolution. The effectiveness of this algorithm was proved by using MATLAB software. The
simulation results show that the double-window function spectrum estimation algorithm significantly decreases the
amplitude estimation error brought by the picket fence effect, and realizes the optimization of FFT algorithm.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.