A double-difference method for high-resolution acoustic tracking using a deep-water vertical array
Ray-tracing is typically used to estimate the depth and range of an acoustic source in refractive deep-water environments by exploiting multipath information on a vertical array. However, mismatched array inclination and uncertain environmental features can produce imprecise trajectories when ray-tr...
Published in: | The Journal of the Acoustical Society of America |
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2017
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Online Access: | https://escholarship.org/uc/item/1vm6b59s https://escholarship.org/content/qt1vm6b59s/qt1vm6b59s.pdf https://doi.org/10.1121/1.5014050 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt1vm6b59s 2024-09-15T18:37:33+00:00 A double-difference method for high-resolution acoustic tracking using a deep-water vertical array Tenorio-Hallé, Ludovic Thode, Aaron M Sarkar, Jit Verlinden, Christopher Tippmann, Jeffrey Hodgkiss, William S Kuperman, William A 3474 - 3485 2017-12-01 application/pdf https://escholarship.org/uc/item/1vm6b59s https://escholarship.org/content/qt1vm6b59s/qt1vm6b59s.pdf https://doi.org/10.1121/1.5014050 unknown eScholarship, University of California qt1vm6b59s https://escholarship.org/uc/item/1vm6b59s https://escholarship.org/content/qt1vm6b59s/qt1vm6b59s.pdf doi:10.1121/1.5014050 public The Journal of the Acoustical Society of America, vol 142, iss 6 sperm whale ray tracing dive profile acoustic tracking article 2017 ftcdlib https://doi.org/10.1121/1.5014050 2024-06-28T06:28:21Z Ray-tracing is typically used to estimate the depth and range of an acoustic source in refractive deep-water environments by exploiting multipath information on a vertical array. However, mismatched array inclination and uncertain environmental features can produce imprecise trajectories when ray-tracing sequences of individual acoustic events. “Double-difference” methods have previously been developed to determine fine-scale relative locations of earthquakes along a fault [Waldhauser and Ellsworth (2000). Bull. Seismolog. Soc. Am. 90, 1353–1368]. This technique translates differences in travel times between nearby seismic events, recorded at multiple widely separated stations, into precise relative displacements. Here, this method for acoustic multipath measurements on a single vertical array of hydrophones is reformulated. Changes over time in both the elevation angles and the relative arrival times of the multipath are converted into relative changes in source position. This approach is tested on data recorded on a 128-element vertical array deployed in 4 km deep water. The trajectory of a controlled towed acoustic source was accurately reproduced to within a few meters at nearly 50 km range. The positional errors of the double-difference approach for both the towed source and an opportunistically detected sperm whale are an order of magnitude lower than those produced from ray-tracing individual events. Article in Journal/Newspaper Sperm whale University of California: eScholarship The Journal of the Acoustical Society of America 142 6 3474 3485 |
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Open Polar |
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University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
sperm whale ray tracing dive profile acoustic tracking |
spellingShingle |
sperm whale ray tracing dive profile acoustic tracking Tenorio-Hallé, Ludovic Thode, Aaron M Sarkar, Jit Verlinden, Christopher Tippmann, Jeffrey Hodgkiss, William S Kuperman, William A A double-difference method for high-resolution acoustic tracking using a deep-water vertical array |
topic_facet |
sperm whale ray tracing dive profile acoustic tracking |
description |
Ray-tracing is typically used to estimate the depth and range of an acoustic source in refractive deep-water environments by exploiting multipath information on a vertical array. However, mismatched array inclination and uncertain environmental features can produce imprecise trajectories when ray-tracing sequences of individual acoustic events. “Double-difference” methods have previously been developed to determine fine-scale relative locations of earthquakes along a fault [Waldhauser and Ellsworth (2000). Bull. Seismolog. Soc. Am. 90, 1353–1368]. This technique translates differences in travel times between nearby seismic events, recorded at multiple widely separated stations, into precise relative displacements. Here, this method for acoustic multipath measurements on a single vertical array of hydrophones is reformulated. Changes over time in both the elevation angles and the relative arrival times of the multipath are converted into relative changes in source position. This approach is tested on data recorded on a 128-element vertical array deployed in 4 km deep water. The trajectory of a controlled towed acoustic source was accurately reproduced to within a few meters at nearly 50 km range. The positional errors of the double-difference approach for both the towed source and an opportunistically detected sperm whale are an order of magnitude lower than those produced from ray-tracing individual events. |
format |
Article in Journal/Newspaper |
author |
Tenorio-Hallé, Ludovic Thode, Aaron M Sarkar, Jit Verlinden, Christopher Tippmann, Jeffrey Hodgkiss, William S Kuperman, William A |
author_facet |
Tenorio-Hallé, Ludovic Thode, Aaron M Sarkar, Jit Verlinden, Christopher Tippmann, Jeffrey Hodgkiss, William S Kuperman, William A |
author_sort |
Tenorio-Hallé, Ludovic |
title |
A double-difference method for high-resolution acoustic tracking using a deep-water vertical array |
title_short |
A double-difference method for high-resolution acoustic tracking using a deep-water vertical array |
title_full |
A double-difference method for high-resolution acoustic tracking using a deep-water vertical array |
title_fullStr |
A double-difference method for high-resolution acoustic tracking using a deep-water vertical array |
title_full_unstemmed |
A double-difference method for high-resolution acoustic tracking using a deep-water vertical array |
title_sort |
double-difference method for high-resolution acoustic tracking using a deep-water vertical array |
publisher |
eScholarship, University of California |
publishDate |
2017 |
url |
https://escholarship.org/uc/item/1vm6b59s https://escholarship.org/content/qt1vm6b59s/qt1vm6b59s.pdf https://doi.org/10.1121/1.5014050 |
op_coverage |
3474 - 3485 |
genre |
Sperm whale |
genre_facet |
Sperm whale |
op_source |
The Journal of the Acoustical Society of America, vol 142, iss 6 |
op_relation |
qt1vm6b59s https://escholarship.org/uc/item/1vm6b59s https://escholarship.org/content/qt1vm6b59s/qt1vm6b59s.pdf doi:10.1121/1.5014050 |
op_rights |
public |
op_doi |
https://doi.org/10.1121/1.5014050 |
container_title |
The Journal of the Acoustical Society of America |
container_volume |
142 |
container_issue |
6 |
container_start_page |
3474 |
op_container_end_page |
3485 |
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1810481918854037504 |