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Proceedings Paper

Centroiding accuracy of infrared Earth images mitigating impact of blurring and Earth non-uniformity
Author(s): Y. Chen; G. G. Ortiz; H. Hemmati; S. Lee
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Paper Abstract

Infrared (IR) Earth thermal image tracking has potential to enable optical communications throughout the solar system and is a promising alternative to traditionally proposed laser beacon tracking. Image blurring due to finite receiver aperture size introduces distortions to IR Earth image in the presence of Earth's non-uniform emissivity and reduces the centroiding accuracy in identifying the center of the Earth. The impact is largest in the 0.5 to 2 AU range. We demonstrate that a deconvolution algorithm can mitigate the effect of blurring associated with IR Earth non-uniformity and improve centroiding edge detection accuracy.

Paper Details

Date Published: 1 March 2006
PDF: 9 pages
Proc. SPIE 6105, Free-Space Laser Communication Technologies XVIII, 61050E (1 March 2006); doi: 10.1117/12.660269
Show Author Affiliations
Y. Chen, Jet Propulsion Lab. (United States)
G. G. Ortiz, Jet Propulsion Lab. (United States)
H. Hemmati, Jet Propulsion Lab. (United States)
S. Lee, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 6105:
Free-Space Laser Communication Technologies XVIII
G. Stephen Mecherle, Editor(s)

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