Shallow water depth measurement based on fusion of active and passive optical satellite remote sensing data

doi:10.13474/j.cnki.11-2246.2023.0305

Abstract

Abstract: Aiming at the bathymetric error caused by the uncertainty of water surface elevation in dual-medium stereo photogrammetry, a technical route of shallow water depth measurement based on fusion of active and passive optical satellite remote sensing data is proposed, and the bathymetric model of integrating active ICESat-2 laser altimetry data and passive WorldView-3 stereo image pair data is studied. Firstly, the sea surface elevation is extracted from ICESat-2 laser altimetry data as the starting position for water surface elevation correction of WorldView-3 stereo image pair data. Then the appropriate water depth correction is added using the quadratic polynomial of the area network parity. A shallow water bathymetry experiment is carried out on the fusion of active and passive optical satellite remote sensing data in South China Sea. The results show that the root mean square error (RMSE) of the active and passive fusion bathymetry model is less than 0.70 m. The active-passive fusion bathymetric model realizes high-precision shallow water bathymetry without measured control points.

Key words: shallow water bathymetry, active-passive fusion, ICESat-2, WorldView-3, optical satellite remote sensing

CLC Number:

P237

ZHANG Chunling, LI Youzhi, ZHANG Gang, QIU Zhenge. Shallow water depth measurement based on fusion of active and passive optical satellite remote sensing data[J]. Bulletin of Surveying and Mapping, 2023, 0(10): 117-122.

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