AUTHOR=Li Zhuoxiao , Peng Zitian , Zhang Zheng , Chu Yijie , Xu Chenhang , Yao Shanliang , García-Fernández Ángel F. , Zhu Xiaohui , Yue Yong , Levers Andrew , Zhang Jie , Ma Jieming 

TITLE=Exploring modern bathymetry: A comprehensive review of data acquisition devices, model accuracy, and interpolation techniques for enhanced underwater mapping

JOURNAL=Frontiers in Marine Science

VOLUME=Volume 10 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2023.1178845

DOI=10.3389/fmars.2023.1178845

ISSN=2296-7745

ABSTRACT=Building a high-precision bathymetry digital elevation model is essential for navigation planning, marine and lake resource planning, port construction, and underwater archaeological projects. However, existing bathymetry methods have yet to be effectively and comparatively analysed. This paper presents a comprehensive review of state-of-the-art bathymetry methods, including data acquisition techniques, model accuracy, and interpolation algorithms for underwater terrain mapping. First, We assess the merits and drawbacks of novel data acquisition devices, such as single-beam/multi-beam echo sounders and light detection and ranging systems. After that, we analyse the accuracy of the ETOPO1, GEBCO\_2022 and SRTM15 to provide valuable insights into their performance. Furthermore, we evaluate AUNDEM, Inverse Distance Weighting, Kriging and Nearest Neighbor interpolation algorithms in different underwater terrains by comparing their applicability, reliability, and accuracy in various underwater environments. Finally, we discuss the development trends and challenges in underwater bathymetry technology and offer a forward-looking perspective on the future of this essential field. This review aims to advance bathymetric mapping techniques and applications and is a valuable resource for researchers and practitioners.