Dynamic towed array models and state estimation for underwater target tracking
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Authors
Stiles, Zachariah H.
Subjects
Submarine
UUV
USV
ASW
Towed Linear Array
Beamforming
Dolph-Chebyshev Optimization
Bearings-only Tracking
Doppler-bearing Tracking
Extended Kalman Filter
DBT
BOT
UUV
USV
ASW
Towed Linear Array
Beamforming
Dolph-Chebyshev Optimization
Bearings-only Tracking
Doppler-bearing Tracking
Extended Kalman Filter
DBT
BOT
Advisors
Hutchins, Robert G.
Yun, Xiaoping
Date of Issue
2013-09
Date
Sep-13
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
The ability of Towed Linear hydrophone Arrays (TLA) to detect submarine-emitted narrow band tonals makes them the submarine tracking sensor of choice. Recent TLA improvements allow surface ships, Unmanned Underwater Vehicles (UUVs), Unmanned Surface Vehicles (USVs), and submarines alike to detect modern submarines by towing arrays. Allowing the full spectrum of Navy assets access into the Anti-submarine Warfare (ASW) arena is vital to countering future submerged threats. The generation of dynamic TLA and state estimation models in Simulink is detailed in this thesis. The dynamic TLA model receives user-specified TLA parameters and performs Dolph-Chebyshev optimization to form a set of beams which are steered for tracking. The TLA parameters can be specified to meet the needs of the towing vehicle, whether it is a submarine, ship, USV or UUV. The state estimation model uses outputs received from a mobile platform towing an array to estimate the target state. The state estimation model uses both bearing-only and Doppler-bearing Extended Kalman Filters to estimate target state. These models provide a basic platform which can be used to enhance ASW capabilities. Specifically, the models can aid in determining optimal future ASW-asset allocation, improving TLA tracking algorithms, and improving information presented to submarine operators.
Type
Thesis
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Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.