INVESTIGATION OF MULTIPLE HYPOTHESIS AND VITERBI TRACKERS FOR SIGNAL FOLLOWING APPLICATIONS

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Authors
  1. Quach, T.
  2. Farooq, M.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Royal Military Coll of Canada, Kingston ONT (CAN) Dept of Electrical and Computer Engineering
Abstract
In the study, we investigate the performance of a multiple hypothesis tracker (MHT) and a measurement-oriented Viterbi tracker (VT) for signal following application, with emphasis on the low signal to noise (SNR) source in a maneuvering scenario. The investigation of these tracking techniques is motivated by the results of our previous studies, which established that the available recursive techniques are generally not very robust for tracking a low SNR source in a maneuvering situation. Futhermore, the MHT and the VT have the ability to initialize tracks, thus, allowing them to be more self-contained and less reliant on the operator's interventions. The thrust of the study is both on the performance comparison between the different signal followers and on the implementation issues of these algorithms. Our investigation also addresses the question of how the maneuver tracking in a cluttered environment can be accomplished for the MHT and the VT algorithms. For the MHT, it was found that track re-initialization is an effective and efficient way to track a maneuvering source. On the other hand, maneuvering tracking with the VT was achieved by modifying the branch weight calculations to include penalty terms for changes in the velocity vector. TRUNCATED
Keywords
Multiple hypothesis tracker (MHT);Viterbi tracker (VT);Interactive multiple model tracker
Report Number
DREA-CR-94-432 — Contractor Report (Final)
Date of publication
01 Jul 1994
Number of Pages
97
DSTKIM No
95-01457
CANDIS No
149780
Format(s):
Hardcopy;Document Image stored on Optical Disk

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