There has been much interest in using transiting surface ships as sources of opportunity for tomography and geo acoustic inversion. In tomography, it would be valuable to increase the ranges at which ship signatures can be processed by measuring times of arrival at the output of beamforming processes, which provide spatial processing gain. This additional gain may enable fainter multipath arrivals to be identified and exploited as additional paths to sample the ocean water column. This seems readily achievable when cross-correlating multiple vertical beams formed on a single vertical line array for example. However, cross-correlating beams from multiple arrays, vertical or horizontal, raises questions. In both cases, different beams may have different Doppler, which is manageable with a correlation process that includes Doppler compensation. But observing a ship from different vantage points may be problematic, if the ship signature is due to horizontally displaced noise sources distributed around the ship. We will present results of processing surface ships observed on single and multiple arrays and assess the use of such processing in ambient noise tomography.
Skip Nav Destination
Article navigation
8 May 2022
184th Meeting of the Acoustical Society of America
8–12 May 2023
Chicago, Illinois
Signal Processing in Acoustics: Paper 1pAO10
August 10 2023
Correlating shipping noise on multiple beams
Paul Hursky
Paul Hursky
1
Department of Underwater Acoustic Signal Processing, Applied Ocean Sciences
, San Diego, CA, 92130, USA
; [email protected]; [email protected]1
Department of Underwater Acoustic Signal Processing, Applied Ocean Sciences
, San Diego, CA, 92130, USA
; [email protected]; [email protected]
Search for other works by this author on:
Proc. Mtgs. Acoust. 51, 055001 (2023)
Article history
Received:
July 23 2023
Accepted:
July 28 2023
Connected Content
This is a companion to:
Correlating shipping noise on multiple beams
Citation
Paul Hursky; Correlating shipping noise on multiple beams. Proc. Mtgs. Acoust. 8 May 2023; 51 (1): 055001. https://doi.org/10.1121/2.0001770
Download citation file:
146
Views
Citing articles via
Enabling support for GNU Octave within the FOCUS software package
Jacob S. Honer, Robert J. McGough
Related Content
Robust processing for multipath in acoustic navigation, tomography and source tracking
Proc. Mtgs. Acoust. (October 2023)
A tomography experiment using ships as sources of opportunity
J Acoust Soc Am (May 2017)
Localization of a distant ship using a guide ship and a vertical array
J. Acoust. Soc. Am. (April 2021)
Passive travel time tomography using ships as acoustic sources of opportunity
J Acoust Soc Am (October 2016)
Moving ship tomography from the Basin Acoustic Seamount Scattering Experiment (BASSEX‐04)
J Acoust Soc Am (November 2006)