An observational program to search for radio signals from extraterrestrial intelligence through the use of existing facilities

Details An observational program to search for radio signals from extraterrestrial intelligence through the use of existing facilities An observational program to search for radio signals from extraterrestrial intelligence through the use of existing facilities

Oct 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976anah.iafcq....e&link_type=abstract

International Astronautical Federation, International Astronautical Congress, 27th, Anaheim, Calif., Oct. 10-16, 1976, 10 p.

Astronomy and Astrophysics

Astronomy

Extraterrestrial Life, Radio Antennas, Radio Sources (Astronomy), Technology Utilization, Antenna Radiation Patterns, Bandwidth, Cosmic Noise, Intelligence, Microwave Antennas, Radiant Flux Density, Signal Transmission

Scientific paper

It is argued that a substantial portion of the capability for detecting microwave signals from extraterrestrial civilizations lies not in the application of ever larger antenna collecting areas but rather in the application of millions or billions of simultaneous frequency-channel observations combined with rapid and powerful data processing techniques. The application of these methods to existing facilities is discussed in terms of a program of modest expense and duration which will seek to discover certain classes of extraterrestrial signals of intelligent origin while defining boundaries to the search problem throughout the range of interest. This program will investigate radio-astronomical phenomena of interest and simultaneously define the background of environmental radiation in order to determine physical limitations on both the search strategies and the potential for deep-space communications. Signal parameters that must be determined are examined along with the potential of existing radio-astronomical facilities for detecting narrow-band signals. A seven-year program is described which will carry out a search for extraterrestrial intelligence over 80% of the sky and over the entire frequency range from 1 to 25 GHz with a sensitivity limit varying from 10 to the -21st power W/sq cm at the lowest frequencies to 10 to the -19th power W/sq cm at the higher frequencies.

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