Journal of Marine Sciences ›› 2018, Vol. 36 ›› Issue (4): 28-34.DOI: 10.3969/j.issn.1001-909X.2018.04.004

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Performance evaluation of laser bathymetry in the South Yellow Sea region based on VIIRS data

LU Gang1,2, WANG Zong-wei*1,2, ZHU Shi-cai1, GAO Lei1,2, WANG Ya-nan1,2   

  1. 1. Jiangsu Province Surveying and Mapping Engineering Institute, Nanjing 210013, China;
    2. Key Laboratory of Satellite Mapping Technology and Application of National Mapping Geographic Information Bureau, Nanjing 210013, China
  • Received:2018-01-17 Revised:2018-10-13 Online:2018-12-15 Published:2022-11-18

Abstract: Airborne laser bathymetry gets a lot of attention because of its unique advantages. But its detection capability is limited at present. In order to solve the problem of its applicability, VIIRS data were used to evaluate the performance of laser bathymetry in the South Yellow Sea region. Firstly, the diffuse attenuation coefficients of 490 nm band in the South Yellow Sea region were retrieved by using field measured data and satellite images. Secondly, the linear relationship between diffuse attenuation coefficients of 490 nm band and 532 nm band was established. Finally, taking CZMIL system as an example, the ability of laser bathymetry in the South Yellow Sea region was evaluated, and the applicable range of CZMIL system along the coast of Jiangsu Province was estimated. The results show that the maximum sounding capability of the CZMIL system in the South Yellow Sea region is about 0.5-40 meters, and the applicable range of CZMIL system in the coastal waters of Jiangsu Province is about 4 700 m2 when the water surface is at the theoretical the lowest low water.

Key words: airborne LiDAR, CZMIL, VIIRS, diffuse attenuation coefficient, the South Yellow Sea, Sounding performance

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