AAS 197, January 2001
Session 53. Instruments and Techniques: Submillimeter to Radio
Display, Tuesday, January 9, 2001, 9:30am-7:00pm, Exhibit Hall

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[53.06] Pulse Detection Algorithms for Use in SETI@home

E. J. Korpela, E. M. Heien, D. Werthimer (University of California, Berkeley)

We describe the pulse detection algorithms used by the most recent versions of SETI@home.

The first is a modified folding algorithm with an optimal threshold function. It is designed to efficiently search for repeating pulses over a 15+ octave period range with constant false alarm rate per period searched. This algorithm is potentially useful for other applications where detection of faint pulsed emission is desired (i.e. pulsar searches).

The second is a triplet detector which searches for sets of three evenly spaced pulses that exceed a power threshold. It is useful for detecting pulsed emission that has total duration less than the searched exposure.

We describe the first results of the use of these algorithms in SETI@home and discuss the pulsed radio frequency interference (RFI) environment of the Arecibo observatory.

If you would like more information about this abstract, please follow the link to http://setiathome.ssl.berkeley.edu/~korpela. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

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