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Fast folding algorithm

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The Fast Folding Algorithm (Staelin, 1969) in signal processing is an efficient algorithm for the detection of approximately-periodic events within time series data. It computes superpositions of the signal modulo various window sizes simultaneously.

The FFA is best known for its use in the detection of pulsars, as popularised by SETI@home.

Caution! The FFA is unrelated to the RNA folding algorithms of biochemistry.

See also

References

  • D. Staelin. Fast folding algorithm for the detection of periodic pulse trains. Proceedings of the IEEE, 57, 1969.
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