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Proceedings Paper

MHT tracking for crossing sonar targets
Author(s): Peter Willett; Tod Luginbuhl; Evangelos Giannopoulos
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Paper Abstract

Sometimes radar targets cross and become unresolved; this is a concern, but with a reasonable track depth and an appropriate merged-measurement model the concern is considerably mitigated. Sonar targets, however, can become merged (in the same beam) for considerably longer, particularly with bearing-only measurements. In such cases the crossing times can be 100 scans long, and no reasonable depth exists for an multi-frame tracker that can "see" both ends of the merged period. Further, there is a demonstrable tendency for estimated targets to repel each other as they are being tracked. In this paper we explore the hypothesis-oriented multi-hypothesis tracker (HO-MHT), an MHT approach that uses the new "rollout" optimization insight and the to give an appropriate and cost-effective means to rank hypotheses, and also the PMHT tracker that operates on batches of scans with linear computational complexity in most quantities. We show results in terms of estimation error (RMSE), consistency (NEES) and computational effort in both linear and beam-space tracking scenarios.

Paper Details

Date Published: 25 September 2007
PDF: 12 pages
Proc. SPIE 6699, Signal and Data Processing of Small Targets 2007, 66991C (25 September 2007); doi: 10.1117/12.740148
Show Author Affiliations
Peter Willett, Univ. of Connecticut (United States)
Tod Luginbuhl, Naval Undersea Warfare Ctr. (United States)
Evangelos Giannopoulos, Naval Undersea Warfare Ctr. (United States)

Published in SPIE Proceedings Vol. 6699:
Signal and Data Processing of Small Targets 2007
Oliver E. Drummond; Richard D. Teichgraeber, Editor(s)

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