Examination of the Magnitude and Causes of Positional Errors Contained in Underwater Acoustic Positioning Data

DOI Web Site 10 References
  • ASADA Miho
    Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST).
  • KIDO Yukari
    Expedition Management Group, Operation Department, Institute for Marine-Earth Exploration and Engineering, Japan Agency for Marine-Earth and Technology (JAMSTEC)

Bibliographic Information

Other Title
  • 実海域で取得した音響測位データが含む位置誤差の大きさ および発生要因の検討

Abstract

<p>Acoustic positioning, a common method used for determining the position of underwater objects such as submersibles and robots, involves positional error. The RMSH (root mean square of horizontal distance from a seafloor reference point) was on the order of tens of meters when the target was grounded on the seafloor. Normalized values by the water depth at all diving events were almost within approximately 0.8 %, and within approximately 0.5 % after exclusion of outliers. In case for an acoustic mapping using a moving vehicle, remember the error mentioned above from acoustic positioning system, and also an error from inertial navigation system and position deviations caused by "positioning corrections" due to the data processing process. These positioning errors probably affect the compilation of multiple data sets and their secondary use in other analyses. Since the acoustic positioning data becomes used wide, the primary analysts using acoustic data would be required to keep a record of the errors quantitatively as possible for secondary users.</p>

Journal

  • Geoinformatics

    Geoinformatics 33 (2), 41-50, 2022-06-25

    Japan Society of Geoinformatics

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