How to Interpret FFT results ??
조회 수: 1 (최근 30일)
이전 댓글 표시
My code for fft looks like this :
R_mags = abs(fft(dtec));
N = length(dtec);
fs = 0.0333333333 ; % samples per second
fax_bins = (1 : N-1);
fax_Hz = fax_bins*fs/N;
N_2 = ceil(N/2);
plot((1./fax_Hz(1:N_2))/60 , R_mags(1:N_2))
xlabel('Period(mins)')
ylabel('Magnitude');
title('Gravity Wave Signatures in F-region TEC: Station-Port Blair','fontsize', 14, 'fontweight', 'bold');
axis tight
And the result plot looks like the jpg file attached here.
What do I interpret in terms of the frequency and Time period of the waves seen in the image. Someone help. Thanks
댓글 수: 0
답변 (1개)
Star Strider
2016년 8월 1일
It is difficult for me to follow your code. I would implement the function using this version of the fft documentation.
댓글 수: 2
참고 항목
카테고리
Help Center 및 File Exchange에서 Spectral Measurements에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!