Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991stia...9154724p&link_type=abstract
(West German-Soviet Workshop on Scientific and Industrial Cooperation in the use of GLONASS, Leningrad, USSR, Sept., 1990) Journ
Astronomy and Astrophysics
Astronomy
Global Positioning System, Interstellar Masers, Line Spectra, Radio Astronomy, Radio Frequency Interference, Radio Navigation, Bandwidth, Hydroxyl Emission, Radio Waves
Scientific paper
The fundamentals of radioastronomy are discussed. It is noted that, of the various signals studied by radioastronomy, of particular interest are the microwave spectral lines of various molecules and atoms that exist in vast clouds in interstellar space and in other galaxies. The radio regulations of ITU are reviewed and attention is given to the interference generated by both GPS and Glonass. It is indicated that both satellites intentionally transmit at power levels in excess of the levels known to be harmful to the radioastronomy service and at frequencies where the service is supposed to enjoy protection.
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