Methodologies for resolving anomalous position information in torpedo range tracking using simulation
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Authors
Kroshl, William M.
Subjects
Underwater Acoustics
Raytracing
Simulation
Torpedo
Underwater Range
Raytracing
Simulation
Torpedo
Underwater Range
Advisors
Read, Robert R.
Date of Issue
1988-03
Date
March 1988
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
This thesis investigates the problem of resolving dual path records of torpedoes being tracked on an acoustic range using short baseline arrays. An acoustic signal is sent out by a torpedo at short intervals. This signal is then received by the four hydrophones of a short baseline array. Arrival time differences in the signal are used to determine an estimated position for the torpedo at the time the signal was emitted using spherical equations and acoustic raytracing. In those areas where two arrays can track a target simultaneously, two sets of estimated positions are generated. These estimates usually do not coincide. A simulation of the range is developed using actual range positions and sound velocity data. Deliberate errors are then range introduced into the sound velocity profile data and the timing data. Three methods of resolving the resulting positional ambiguity are presented. Each method is compared to the actual position for idealized (no deliberate error) and the deliberate error models.
Type
Thesis
Description
Series/Report No
Department
Operations Research
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funding
Format
Citation
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.