Reducing elevation angle errors of long-range deep-sea acoustic localization by ray tracing and depth measurements
| Autor: | David Oertel, Sergej Neumann, M. Golz, Joanna J Waniek, Heinz Wörn |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
010505 oceanography business.industry Acoustics Elevation angle 02 engineering and technology Acoustic source localization Geodesy 01 natural sciences Absolute positioning 020901 industrial engineering & automation Global Positioning System Measurement uncertainty Ray tracing (graphics) business Velocity measurement Geology 0105 earth and related environmental sciences |
| Zdroj: | AIM |
| DOI: | 10.1109/aim.2016.7576763 |
| Popis: | For deep-sea (robotic) applications, accurate acoustic localization is required, e.g. using USBL devices. Internal calculations for these devices usually assume a constant sound velocity within the deployment area ignoring refraction effects due to a depth-dependent sound velocity profile. This work presents the results of long-range deep-sea (5000m) USBL localization tests to estimate absolute positioning accuracy. The experiments lead to a correction approach by incorporating both the depth of acoustic participants as well as the full sound velocity profile. For bigger horizontal distances (> 800m), this approach can largely reduce the resulting (systematic) elevation angle error. |
| Databáze: | OpenAIRE |
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