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Proceedings Paper

Testing of tracking algorithms under airborne turbulence
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Paper Abstract

Tracking through a turbulent atmosphere has several challenges. If the target is extended, such as a large target being illuminated with laser energy from the tracking aperture, the problems of scintillation and anisoplanatism cause significant concerns. The 'blotches' caused by scintillation can be interpreted by the tracking algorithms as tilt and incorrectly applied to the steering mirror. Similarly, anisoplanatism imparts tilt components from separated points, that may be independent, and not act as coherent tilt that is possible to correct with one mirror. The authors have been involved in a study that compares the performance of 14 different tracking algorithms under scintillated conditions. Image data, available from Lincoln Laboratory, has been used to calculate tilt from the different algorithms and do comparisons using Power Spectral Density analysis. The results show that different algorithms have significantly different performance characteristics.

Paper Details

Date Published: 3 August 1999
PDF: 9 pages
Proc. SPIE 3706, Airborne Laser Advanced Technology II, (3 August 1999); doi: 10.1117/12.356962
Show Author Affiliations
Paul H. Merritt, SVS Systems, Inc. (United States)
Richard L. Brunson, SVS Systems, Inc. (United States)
Rastislav Telgarsky, SVS Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 3706:
Airborne Laser Advanced Technology II
Todd D. Steiner; Paul H. Merritt, Editor(s)

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