Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992stin...9413988n&link_type=abstract
Unknown
Astronomy and Astrophysics
Astronomy
Astronomical Satellites, Low Frequency Bands, Onboard Data Processing, Satellite Communication, Satellite Configurations, Satellite Instruments, Interferometry, Payloads, Satellite Attitude Control, Satellite Imagery, Satellite Networks, Satellite Observation, Telemetry
Scientific paper
Several aspects of the project concerning the Astronomical Low Frequency Interferometric Satellites (ALFIS) is discussed. These satellites are directed towards imaging the entire sky at frequencies below 15 mHz, which are inaccessible from the ground due to ionospheric absorption and scattering. This frequency range covers the lowest energy region of the electromagnetic spectrum that is essentially unexplored by astronomy. The ALFIS instrumental concept is a single launch bus which places two free flying spacecraft into almost identical geostationary transfer orbits with a small inclination between them to provide for baseline components at right angles to the orbital plane. ALFIS is less ambitious and cheaper than previous proposals submitted to NASA.
Beenen Richard
Nieuwenhuizen M. P.
Simons Wim
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