Adaptive Tracking System Study.
Abstract
This is the final report on phase 2 of a study contract to determine the usefulness of the LMS adaptive filter in a bearing tracker structure for passive sonar. Three potential advantages of such a structure over conventional trackers motivated the study, as follows (a) While conventional trackers require a priori knowledge of the input power spectra to optimize performance, the adaptive tracker is estimating the input spectra. This suggests that the adaptive tracker may be insensitive to incorrect a priori assumptions and variations of the input spectra, (b) Since all the correlation information between the split array outputs is contained in the adaptive filter weights, the potential exists to perform broadband and narrowband tracking simultaneously, and (c) Conventional trackers are essentially designed for stationary targets, modified for use with dynamic targets with the addition of a tracking loop. However, the adaptive filter weights are adjusted iteratively (dynamically) to satisfy a minimum mean square error criteria, which may provide advantages against moving targets.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1979
- Accession Number
- ADA078469
Entities
People
- Curtis M. Flynn
- Frances A. Reed
- N. J. Bershad
- Paul L. Feintuch
Organizations
- Hughes Aircraft Company