Computer Science – Learning
Scientific paper
Nov 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992nascp3066..243.&link_type=abstract
In its A Lunar Optical-Ultraviolet-Infrared Synthesis Array (LOUISA) p 243-248 (SEE N93-13579 03-89)
Computer Science
Learning
Aerospace Environments, Astronomical Observatories, Earth Orbits, Geosynchronous Orbits, Interferometers, Lunar Bases, Lunar Surface, Position (Location), Radiation Effects, Space Exploration, Space Stations, Thermal Stability
Scientific paper
The group discussed the advantages and disadvantages of five locations for an optical/infrared array: low-Earth orbit (LEO), Sun-synchronous Earth-orbit, geosynchronous orbit (GEO), Lagrangian points (L4 and L5), and the lunar surface. The factors affecting an array and our assessments of them are given and briefly discussed. In the discussions, two axioms are assumed: (1) Human expansion into space and to the Moon will occur; and (2) The Space Station will be constructed and operational. The major conclusion reached is that baselines of moderate size (greater than 300 m) are best done on the Moon and that large baselines (greater than 10 km) can be done only on the Moon. Three areas needing additional research were identified as follows. (1) Studies are needed on methods to steer long-baseline systems in orbit. This involves learning how to control free-flyers. It is not clear how the difficulty of control varies with orbital elevation. (2) More work is needed on the internal metrology of array systems, both orbital and lunar-surface systems.(3) We need to understand the radiation effects on detectors and electronics and learn how to mitigate them.
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