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A directed search for extraterrestrial laser signalsThis paper analyzes the technical feasibility of interstellar communication at infrared frequencies, both in its own right and in comparison with communication at radio frequencies. The analysis considers both the practical and fundamental limits affecting communication over interstellar distances and concludes that for specified transmitter and receiver locations communications at infrared and radio frequencies can be equally effective. On this basis a search for extraterrestrial signals at infrared wavelengths is equally as valid as any planned microwave effort. Work is now in progress to adapt a 10 micrometers heterodyne spectrometer to search for CO2 laser signals from 200 nearby stars.
Document ID
20040089654
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
Authors
Betz, A.
(University of California Berkeley 94720, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Acta astronautica
Volume: 13
Issue: 10
ISSN: 0094-5765
Subject Category
Exobiology
Funding Number(s)
CONTRACT_GRANT: NAGW-681
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Exobiology
NASA Discipline Number 52-60
NASA Program Exobiology
Non-NASA Center

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