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Proceedings Paper

Fraunhofer line optical correlator for improvement of initial orbit determination
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Paper Abstract

The design of a Fraunhofer line optical correlator is detailed. The instrument described herein correlates a reflected solar spectrum against multiple Fraunhofer absorption lines to estimate the radial velocity of the reflecting body. By using a spatial light modulator (SLM) as a photomask for known solar absorption lines in the visible spectrum, the ratio of Doppler shifted solar energy to the total received energy can be calculated. Although the reflected light from targets in high orbit is weak, signal-to-noise ratio (SNR) is enhanced by the measurement of multiple Fraunhofer lines in a single snapshot image. Simulations indicate that prediction of orbital parameters is improved by incorporation of this velocity information, and in some cases the number of line-of-sight measurements can be reduced from three to two.

Paper Details

Date Published: 30 August 2017
PDF: 8 pages
Proc. SPIE 10407, Polarization Science and Remote Sensing VIII, 104070K (30 August 2017); doi: 10.1117/12.2274804
Show Author Affiliations
Brett A. Pantalone, North Carolina State Univ. (United States)
Michael W. Kudenov, North Carolina State Univ. (United States)

Published in SPIE Proceedings Vol. 10407:
Polarization Science and Remote Sensing VIII
Joseph A. Shaw; Frans Snik, Editor(s)

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