Title :
Passive energy based acoustic signal analysis for diver detection
Author :
Lohrasbipeydeh, Hannan ; Dakin, Tom ; Gulliver, T.A. ; De Grasse, Claire
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Victoria, Victoria, BC, Canada
Abstract :
A passive energy based analysis of the acoustic signal from a diver is presented. The frequency components of the signal during inhaling and exhaling are investigated, as well as the periodicity of the signal features. The effect of different regulators on the power spectral density of the signals is evaluated. The energy based detection problem is formulated using the time-frequency Teager Energy Operator (TEO) as it can be used to develop an adaptive detector. To evaluate the proposed approach, experimental data is employed which was recorded in the open ocean at different ranges and depths. This data was obtained using accurate hydrophones provided by Ocean Network Canada (ONC).
Keywords :
acoustic signal detection; hydrophones; time-frequency analysis; ONC; Ocean Network Canada; TEO; adaptive detector; diver detection; frequency components; hydrophones; open ocean; passive energy based acoustic signal analysis; power spectral density; signal features; time-frequency Teager Energy Operator; Acoustics; Detectors; Noise; Oceans; Regulators; Sonar equipment; Valves; Bubble oscillation; Diver acoustic signals; Energy based detection; Inhaling and exhaling signals;
Conference_Titel :
Oceans - St. John's, 2014
Conference_Location :
St. John´s, NL
Print_ISBN :
978-1-4799-4920-5
DOI :
10.1109/OCEANS.2014.7003266
