Date of Award

Summer 8-2020

Degree Type


Degree Name


Degree Program

Applied 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


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.


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Included in

Oceanography Commons