SETI at the Nancay telescope

Details SETI at the Nancay telescope SETI at the Nancay telescope

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pari.iafcq....b&link_type=abstract

International Astronautical Federation, International Astronautical Congress, 33rd, Paris, France, Sept. 27-Oct. 2, 1982, 8 p.

Astronomy and Astrophysics

Astronomy

Interstellar Communication, Monochromatic Radiation, Project Seti, Radio Telescopes, Signal Detection, Wideband Communication, Decimeter Waves, Karhunen-Loeve Expansion, Linear Filters, Sine Waves

Scientific paper

Results are reported for a four-day search for monochromatic signals from 102 nearby solar-type stars at four frequencies, viz., the two OH main-line frequencies, the unweighted mean of the four OH line frequencies, and the mean frequency of the four OH lines weighted according to relative line intensity. It is concluded that the search failed to detect narrowband signals at the one-sigma level. Possibilities offered by wide-band signals for interstellar communication are considered, and the use and detection of sinusoidal signals and of nonsinusoidal signals for such communication are examined. It is suggested that Karhunen-Loeve analysis can be a useful tool for the recovery of a signal whose shape is not known a priori.

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