Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jastp..68.2061m&link_type=abstract
Journal of Atmospheric and Solar-Terrestrial Physics, Volume 68, Issue 18, p. 2061-2074.
Physics
3
Scientific paper
In the last two decades, researches indicate that the physical precursor and solar dynamo techniques are preferred as practical tools for long term prediction of solar activity. But, why more than 23 cycles of solar activity history should be omitted and just use the empirical methods or simple autoregressive methods on the basis of observations for the latest eight cycles? In this article, a method based on fuzzy descriptor systems (as a generalization of ordinary Takagi Sugeno (T S) neuro-fuzzy models), developed by the authors to yield a satisfactory solution to the unresolved problem of nonlinear descriptor system identification, and singular spectrum analysis (SSA) as one of the spectral analysis is proposed to forecast some of solar activity's indexes in the way that, a fuzzy descriptor model is optimized for each of the principal components obtained from SSA, and the multi step predicted values are recombined to make the disturbance storm time (DST) and proton flux indexes. The proposed method is used for forecasting hourly DST index in 2001 and daily average of the DST index from 1957 to 2005 and proton flux index in 2001. The results are remarkably good in the predictions of DST and proton flux indexes.
Lucas Caro
Mirmomeni Masoud
Nadjar Araabi Babak
Shafiee Masoud
No associations
LandOfFree
Introducing a new learning method for fuzzy descriptor systems with the aid of spectral analysis to forecast solar activity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Introducing a new learning method for fuzzy descriptor systems with the aid of spectral analysis to forecast solar activity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Introducing a new learning method for fuzzy descriptor systems with the aid of spectral analysis to forecast solar activity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1546522