{"id":542,"date":"2021-06-17T13:00:33","date_gmt":"2021-06-17T12:00:33","guid":{"rendered":"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/?p=542"},"modified":"2021-06-17T13:00:35","modified_gmt":"2021-06-17T12:00:35","slug":"passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming","status":"publish","type":"post","link":"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming\/","title":{"rendered":"Passive acoustic localisation of undersea gas seeps using beamforming"},"content":{"rendered":"\n<h3 class=\"has-text-align-center wp-block-heading\"><strong>International Journal of Greenhouse Gas Control<\/strong><\/h3>\n\n\n\n<h4 class=\"has-text-align-center wp-block-heading\"><em>Li J., White P., Bull J., Leighton T., Roche B. &amp; Davis J.<\/em><\/h4>\n\n\n\n<p class=\"has-text-align-center\">Passive acoustics has been identified as an important strategy to determine underwater gas emission. In this work we propose a focused MVDR algorithm based beamforming technique to enhance the SNR and so localise the gas seeps. The technique is demonstrated using an array of five hydrophones collecting data at the controlled CO<sub>2<\/sub> gas release experiment. The results show that the adaptive beamformer outperforms the conventional (delay and sum) beamformer in undersea bubble localisation. Furthermore, the results with a pair of hydrophone arrays show an improvement of the localisation compared to the use of one hydrophone array.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/wp-content\/uploads\/sites\/413\/2021\/06\/PassiveAcoustics-1024x576.jpg\" alt=\"\" class=\"wp-image-543\" srcset=\"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/wp-content\/uploads\/sites\/413\/2021\/06\/PassiveAcoustics-1024x576.jpg 1024w, https:\/\/generic.wordpress.soton.ac.uk\/isvr\/wp-content\/uploads\/sites\/413\/2021\/06\/PassiveAcoustics-300x169.jpg 300w, https:\/\/generic.wordpress.soton.ac.uk\/isvr\/wp-content\/uploads\/sites\/413\/2021\/06\/PassiveAcoustics-768x432.jpg 768w, https:\/\/generic.wordpress.soton.ac.uk\/isvr\/wp-content\/uploads\/sites\/413\/2021\/06\/PassiveAcoustics.jpg 1376w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link\" href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1750583621000682#:~:text=Using%20beamforming%20it%20was%20possible%20to%20enhance%20the,sites%2C%20or%20at%20locations%20related%20to%20anthropogenic%20activities.\">Go to the publication<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>International Journal of Greenhouse Gas Control Li J., White P., Bull J., Leighton T., Roche B. &amp; Davis J. Passive acoustics has been identified as an important strategy to determine underwater gas emission. In this work we propose a focused MVDR algorithm based beamforming technique to enhance the SNR and so localise the gas seeps. &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Passive acoustic localisation of undersea gas seeps using beamforming&#8221;<\/span><\/a><\/p>\n","protected":false},"author":4920,"featured_media":543,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[12],"class_list":["post-542","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-research-output","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Passive acoustic localisation of undersea gas seeps using beamforming - Institute of Sound and Vibration Research<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Passive acoustic localisation of undersea gas seeps using beamforming - Institute of Sound and Vibration Research\" \/>\n<meta property=\"og:description\" content=\"International Journal of Greenhouse Gas Control Li J., White P., Bull J., Leighton T., Roche B. &amp; Davis J. Passive acoustics has been identified as an important strategy to determine underwater gas emission. In this work we propose a focused MVDR algorithm based beamforming technique to enhance the SNR and so localise the gas seeps. &hellip; Continue reading &quot;Passive acoustic localisation of undersea gas seeps using beamforming&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming\/\" \/>\n<meta property=\"og:site_name\" content=\"Institute of Sound and Vibration Research\" \/>\n<meta property=\"article:published_time\" content=\"2021-06-17T12:00:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-06-17T12:00:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/wp-content\/uploads\/sites\/413\/2021\/06\/PassiveAcoustics.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1376\" \/>\n\t<meta property=\"og:image:height\" content=\"774\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sue Brindle\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ISVRSouthampton\" \/>\n<meta name=\"twitter:site\" content=\"@ISVRSouthampton\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sue Brindle\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming\\\/\"},\"author\":{\"name\":\"Sue Brindle\",\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/#\\\/schema\\\/person\\\/b81b733fc5fa9e57a99fc8500ca19a39\"},\"headline\":\"Passive acoustic localisation of undersea gas seeps using beamforming\",\"datePublished\":\"2021-06-17T12:00:33+00:00\",\"dateModified\":\"2021-06-17T12:00:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming\\\/\"},\"wordCount\":129,\"image\":{\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/wp-content\\\/uploads\\\/sites\\\/413\\\/2021\\\/06\\\/PassiveAcoustics.jpg\",\"keywords\":[\"Research Output\"],\"articleSection\":[\"Research\"],\"inLanguage\":\"en-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming\\\/\",\"url\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/passive-acoustic-localisation-of-undersea-gas-seeps-using-beamforming\\\/\",\"name\":\"Passive acoustic localisation of undersea gas seeps using beamforming - 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