Hybrid Passive Tracking Algorithms. Executive Summary,
TRACOR APPLIED SCIENCES AUSTIN TX
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For the past several years Tracor has been conducting research on the performance and utility of a batch algorithm, used for underwater tracking with passive sonobuoys, called the Maximum Likelihood Procedure MLP. To provide a means of comparison with the MLP and also in an attempt to gain insight into the applicability of sequential algorithms to underwater tracking, Tracor, in conjunction with Dr. Byron Tapley of the University of Texas, designed and implemented a sequential tracking algorithm based on the extended Kalman filter. After testing of the MLP and sequential algorithms revealed their complementary strengths, it was decided that a combination of the two approaches, or a hybrid algorithm, should be developed. Thus, the primary objectives of this contract were to implement a simpler, faster batch initializing procedure implement a numerically more stable sequential algorithm devise more appropriate switching rules for going from batch to sequential and vice versa and to streamline and generalize the program.
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