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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 22, Iss. 7 — Apr. 1, 1983
  • pp: 1078–1083

Doppler imaging system; an optical device for measuring vector winds. 1: General principles

David Rees and Alan H. Greenaway  »View Author Affiliations


Applied Optics, Vol. 22, Issue 7, pp. 1078-1083 (1983)
http://dx.doi.org/10.1364/AO.22.001078


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Abstract

The Doppler imaging system is a Fabry-Perot spectrometer adapted to use a spatially sensitive photon detector to provide each of several instrument stations with a full 2-D imaging capability. Line-of-sight winds are determined from the Doppler shifts for each spatially defined pixel. Full vector wind fields may be obtained using three instrument stations and, at the cost of increased data processing and a priori information requirements, from two or even one instrument station. The proposal outlined here is for a bistatic system with ground-based instruments located at stations separated by some 200 km, each using wide-angle fore-optics (120°) to observe upper atmospheric emissions in the vicinity of the auroral oval. Such a system should be capable of measuring winds, using, for example, the OI 630-nm emission, on a 2-D spatial grid, over a region up to ~800-km diam, with 50-km square pixels, and yield wind measurements with accuracies ±20 m/sec in integration times of ~10 min.

© 1983 Optical Society of America

History
Original Manuscript: July 23, 1982
Published: April 1, 1983

Citation
David Rees and Alan H. Greenaway, "Doppler imaging system; an optical device for measuring vector winds. 1: General principles," Appl. Opt. 22, 1078-1083 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-7-1078

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