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Proceedings Paper

Joint ionospheric and target state estimation for multipath OTHR track fusion
Author(s): Mark G. Rutten; D. John Percival
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Paper Abstract

Over-the-horizon Radar (OTHR) uses the ionosphere as a propagation medium to detect targets beyond the line-of-sight horizon. The layered structure of the ionosphere can support several signal propagation paths between the radar site and detected targets, often giving rise to multiple radar tracks for a single target. A multi-hypothesis multipath track fusion (MPTF) algorithm for OTHR has been developed and reported in earlier publications. In this paper, the MPTF formalism is developed from first principles to explicitly explore sources of track dependence which arise in OTHR track fusion. In particular, a solution is proposed which accounts for track-to-track dependencies arising from common target ionospheric dynamic processes. The algorithm is applied to the simplest nontrivial case, where the ionosphere is modeled as two spherically-symmetric reflecting layers, and two radar tracks are observed.

Paper Details

Date Published: 26 November 2001
PDF: 12 pages
Proc. SPIE 4473, Signal and Data Processing of Small Targets 2001, (26 November 2001); doi: 10.1117/12.492797
Show Author Affiliations
Mark G. Rutten, Defence Science and Technology Organisation (Australia)
D. John Percival, Defence Science and Technology Organisation (Australia)

Published in SPIE Proceedings Vol. 4473:
Signal and Data Processing of Small Targets 2001
Oliver E. Drummond, Editor(s)

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