Date of Award
Summer 8-2020
Degree Type
Thesis
Degree Name
M.S.
Degree Program
Applied Physics
Department
Physics
Major Professor
Dr. Juliette Ioup
Second Advisor
Dr. Stanley Chin-Bing
Third Advisor
Dr. Leszek Malkinski
Fourth Advisor
Dr. Joal Newcomb
Fifth Advisor
Dr. Robert Joyce
Abstract
In 2015, the Naval Oceanographic Office collected vector sensor data in approximately 100 meters of water southwest of Panama City, Florida in the Gulf of Mexico. The vector sensor was deployed at a center mass height of one foot above the seafloor and de-coupled from its mooring through lightweight springs to measure local acoustical pressure and particle velocity.
Accuracy of the data across frequency and source azimuth is measured by evaluating acoustical impedance as a function of frequency and source azimuthal direction. Results indicate the vector sensor has an effective band from 50 to 450 Hz with mooring reflections and resonances degrading performance above this band. Localization using three spatial processing methods are analyzed for high and low Signal to Noise Ratio (SNR) sources. Directional accuracy is approximately 3 degrees up to 350 Hz and 10 degrees above 350 Hz.
Noise sources from air guns, ships, and mammals are spatially processed and the results show that the vector sensor is capable of discriminating the location of two high SNR sources in the environment that are sufficiently separated in either location, time, or frequency.
Recommended Citation
Vann, Timothy S., "Analysis of Vector Sensor Data Collected in Gulf of Mexico" (2020). University of New Orleans Theses and Dissertations. 2806.
https://scholarworks.uno.edu/td/2806
Rights
The University of New Orleans and its agents retain the non-exclusive license to archive and make accessible this dissertation or thesis in whole or in part in all forms of media, now or hereafter known. The author retains all other ownership rights to the copyright of the thesis or dissertation.