Toward a standard line for use in multibeam echo sounder calibration
| Autor: | Thomas C. Weber, Michael D. Smith, Glen Rice |
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| Rok vydání: | 2017 |
| Předmět: |
Backscatter
010502 geochemistry & geophysics Oceanography 01 natural sciences Stability (probability) Substrate type Geophysics Echo sounding Standard line Geochemistry and Petrology 0103 physical sciences Calibration Survey line 010301 acoustics Geology 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | Marine Geophysical Research. 39:75-87 |
| ISSN: | 1573-0581 0025-3235 |
| DOI: | 10.1007/s11001-017-9334-3 |
| Popis: | A procedure is suggested in which a relative calibration for the intensity output of a multibeam echo sounder (MBES) can be performed. This procedure identifies a common survey line (i.e., a standard line), over which acoustic backscatter from the seafloor is collected with multiple MBES systems or by the same system multiple times. A location on the standard line which exhibits temporal stability in its seafloor backscatter response is used to bring the intensity output of the multiple MBES systems to a common reference. This relative calibration procedure has utility for MBES users wishing to generate an aggregate seafloor backscatter mosaic using multiple systems, revisiting an area to detect changes in substrate type, and comparing substrate types in the same general area but with different systems or different system settings. The calibration procedure is demonstrated using three different MBES systems over 3 different years in New Castle, NH, USA. |
| Databáze: | OpenAIRE |
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