{"id":158,"date":"2023-03-19T08:24:39","date_gmt":"2023-03-19T08:24:39","guid":{"rendered":"https:\/\/r3vox.com\/?p=158"},"modified":"2023-03-29T08:51:39","modified_gmt":"2023-03-29T08:51:39","slug":"multispectral-versus-multifrequency-backscatter-a-generational-advancement","status":"publish","type":"post","link":"https:\/\/r3vox.com\/2023\/03\/19\/multispectral-versus-multifrequency-backscatter-a-generational-advancement\/","title":{"rendered":"MultiSpectral versus Multifrequency Backscatter: A Generational Advancement"},"content":{"rendered":"\n

Multibeam Backscatter is a tool used in seafloor characterization, and R2Sonic\u2018s recent\u00a0MultiSpectral Backscatter<\/a>\u00a0advancement dramatically improves this process.\u00a0 MultiSpectral Backscatter comprises\u00a0two or more frequencies<\/strong>\u00a0collected in\u00a0one-pass<\/strong>\u00a0using an advanced sonar capable of multifrequency transmissions, either interleaved or simultaneous.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

MultiSpectral Backscatter should not be confused with MultiFrequency Backscatter<\/h2>\n\n\n\n

Older sonars can collect Multifrequency Backscatter by passing over the same area multiple times using a different single frequency in each pass, whether using the same or different sonars. The difference between the two definitions above is far more than semantics.<\/p>\n\n\n\n

The amount of acoustic energy the seafloor returns to a sonar depends on several factors, including sediment type, sonar frequency, sonar characteristics (radiometric), and grazing angle (geometric). Using different frequencies on the same patch of seafloor results in different backscatter responses enabling better seafloor characterization potential. However, using an older, single-frequency sonar results in a grazing-angle change due to multiple passes, exponentially complicating a potential characterization solution. Using different sonars at different frequencies cannot eliminate the grazing-angle problem even if sonars are normalized to reduce radiometric effects.<\/p>\n\n\n\n

\"\"
From Huff, Acoustic Remote Sensing as a Tool for Habitat Mapping in Alaska Waters<\/figcaption><\/figure>\n\n\n\n

MultiSpectral Backscatter<\/a>, collected with\u00a0R2Sonic sonars<\/a>,\u00a0removes the geometric and radiometric problems inherent with MultiFrequency Backscatter<\/strong>\u00a0collected by older, less capable sonars regardless of whether or not they are normalized.<\/p>\n\n\n\n

\n\n\n\n

R2Sonic\u2019s unique and patented \u201cOnePass\u201d approach allows the end user to collect the highest quality and reliable MultiSpectral Backscatter data in the most efficient manner, dramatically reducing the time, cost and complexity over alternate methods.<\/h3>\n\n\n\n
\n\n\n\n

References:<\/strong><\/p>\n\n\n\n

    \n
  • Brown, C.J. et al., 2019, Multispectral multibeam echo sounder backscatter as a tool for improved seafloor characterization<\/em>, Geosciences, MDPI, 19pp.<\/li>\n\n\n\n
  • Huff, L., 2018, Acoustic Remote Sensing as a Tool for Habitat Mapping in Alaska Waters. Marine Habitat Mapping Technology for Alaska, 18pp.<\/li>\n\n\n\n
  • Hughes Clarke, J.E., 2015, Multispectral Acoustic Backscatter from Multibeam, Improved Classification Potential<\/em>, Proceedings of the United States Hydrographic Conference, The Hydrographic Society of America, 17pp.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

    Multibeam Backscatter is a tool used in seafloor characterization, and R2Sonic\u2018s recent\u00a0MultiSpectral Backscatter\u00a0advancement dramatically improves this process.\u00a0 MultiSpectral Backscatter comprises\u00a0two or more frequencies\u00a0collected in\u00a0one-pass\u00a0using an advanced sonar capable of multifrequency transmissions, either interleaved or simultaneous. MultiSpectral Backscatter should not be confused with MultiFrequency Backscatter Older sonars can collect Multifrequency Backscatter…<\/p>\n","protected":false},"author":1,"featured_media":787,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[11,12],"acf":[],"yoast_head":"\nMultiSpectral versus Multifrequency Backscatter: A Generational Advancement - R3 VOX<\/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:\/\/r3vox.com\/2023\/03\/19\/multispectral-versus-multifrequency-backscatter-a-generational-advancement\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MultiSpectral versus Multifrequency Backscatter: A Generational Advancement - R3 VOX\" \/>\n<meta property=\"og:description\" content=\"Multibeam Backscatter is a tool used in seafloor characterization, and R2Sonic\u2018s recent\u00a0MultiSpectral Backscatter\u00a0advancement dramatically improves this process.\u00a0 MultiSpectral Backscatter comprises\u00a0two or more frequencies\u00a0collected in\u00a0one-pass\u00a0using an advanced sonar capable of multifrequency transmissions, either interleaved or simultaneous. 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