### fast folding algorithm

**(FFA)**
(algorithm to find the periods of periodic data)

The **fast folding algorithm** is an algorithm analogous to the
fast Fourier transform to efficiently find periodicity in **time series data**
through data folding.
Among its uses is identification of pulsars from
radio observations collected over time.

(*mathematics,method*)
**Further reading:**

http://en.wikipedia.org/wiki/Fast_folding_algorithm

https://ui.adsabs.harvard.edu/abs/1969IEEEP..57..724S/abstract

https://books.google.com/books?id=dVQ2AQAAIAAJ&q=fast+folding#v=snippet&q=fast%20folding&f=false

Index