Computer Science – Performance
Scientific paper
Nov 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4131..132s&link_type=abstract
Proc. SPIE Vol. 4131, p. 132-140, Infrared Spaceborne Remote Sensing VIII, Marija Strojnik; Bjorn F. Andresen; Eds.
Computer Science
Performance
Scientific paper
In this paper we discuss operational considerations for the free-flying occulter. Operations consist of maneuvering the Solar-Powered Ion-Driven Eclipsing Rover (SPIDER) between targets, alignment with the space-based telescope line of sight to the target, and stationkeeping target-to-target maneuvers need to be optimized to conserve propellant. A reasonable balance needs to be determined between target observation rate and the number of targets that are observable during mission lifetime. Velocity matching of the SPIDER with the telescope is essential to mission performance. An appropriate combination of solar electric and cold-gas thrusters provides the ability to match velocities using positional information derived from comminution and ranging between telescope, occulter and any metrology stations. Desirable features of using an external coronagraphic vehicle include the ability to obtain coronagraphic data with any instrument on the telescope-- imaging, spectroscopic, or interferometric.
Bruhweiler Fred
Cheng Kwang-Peng
DiSanti Mike A.
Fadali Sami
Fraquelli Dorothy A.
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