Acta Geodaetica et Cartographica Sinica ›› 2019, Vol. 48 ›› Issue (1): 124-131.doi: 10.11947/j.AGCS.2019.20170631

• Marine Survey • Previous Articles     Next Articles

3D histogram of backscatter strength for seafloor substrates classification

JIN Shaohua1,2, LI Jiabiao1, WU Ziyin1, BIAN Gang2, CUI Yang2   

  1. 1. Key Laboratory of Submarine Geosciences of SOA, Hangzhou 310012, China;
    2. Department of Military Oceanography and Hydrography and Cartography, Dalian Naval Academy, Dalian 116018, China
  • Received:2017-11-10 Revised:2018-06-15 Online:2019-01-20 Published:2019-01-31
  • Supported by:

    The National Natural Science Foundation of China (Nos. 41876103;41576105;41374018;41830540)

Abstract:

Backscatter strength angular response embodies the seafloor substrates classification, which are the important data sources for multibeam seafloor classification. At present, multibeam seafloor classification mainly extract mean backscatter strength angular response or sonar image without considering the relevant information of two aspects. This paper comprehensively analyzes backscatter strength angular response and probability distribution of backscatter strength, portraits 3D histogram, and proposes ways of seafloor classification based on 3D histogram of backscatter strength. Results show that the method can directly express different numbers of seafloor classification within multibeam swath, effectively judge the boundaries and realize the fast identification of different seafloor substrates.

Key words: multibeam, backscatter strength, seafloor incidence angle, 3D histogram, seafloor substrates classification

CLC Number: