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Mapping the bathymetry of shallow coastal water using singleframe fine-resolution optical remote sensing imagery

LI Jiran,  ZHANG Huaguo,  HOU Pengfei,  FU Bin,  ZHENG Gang

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文章导航 > Acta Oceanologica Sinica  > 2016 >  35(1): 60-66
李济然, 张华国, 侯鹏飞, 傅斌, 郑罡. 基于单景高分辨率光学卫星遥感影像的浅海水下地形提取[J]. 海洋学报英文版, 2016, 35(1): 60-66. doi: 10.1007/s13131-016-0797-x
引用本文: 李济然, 张华国, 侯鹏飞, 傅斌, 郑罡. 基于单景高分辨率光学卫星遥感影像的浅海水下地形提取[J]. 海洋学报英文版, 2016, 35(1): 60-66. doi: 10.1007/s13131-016-0797-x
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LI Jiran, ZHANG Huaguo, HOU Pengfei, FU Bin, ZHENG Gang. Mapping the bathymetry of shallow coastal water using singleframe fine-resolution optical remote sensing imagery[J]. Acta Oceanologica Sinica, 2016, 35(1): 60-66. doi: 10.1007/s13131-016-0797-x
Citation: LI Jiran, ZHANG Huaguo, HOU Pengfei, FU Bin, ZHENG Gang. Mapping the bathymetry of shallow coastal water using singleframe fine-resolution optical remote sensing imagery[J]. Acta Oceanologica Sinica, 2016, 35(1): 60-66. doi: 10.1007/s13131-016-0797-x
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基于单景高分辨率光学卫星遥感影像的浅海水下地形提取

doi: 10.1007/s13131-016-0797-x
  • 1.

    湖南大学机械与车辆工程学院, 长沙, 410082

  • 2.

    卫星海洋环境动力学国家重点实验室(国家海洋局第二海洋研究所), 杭州, 310012

Mapping the bathymetry of shallow coastal water using singleframe fine-resolution optical remote sensing imagery

  • 1.

    College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China

  • 2.

    State Key Laboratory of Satellite Ocean Environment Dynamic, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

    摘要
  • 摘要: 本文基于海浪波折射现象和浅水波理论,提出了一种基于单景高分辨率光学遥感影像的浅海地形提取方法。首先,基于浅水波理论推导出适用于浅海区域的水深与海浪波长、频率的定量关系,针对近岸光学遥感图像复杂的海浪特征,讨论了两种海浪波长提取方法,即FFT方法和剖面线法。然后提出了基于长距离波长波动分析的海浪频率计算方法,解决了单景遥感影像的波浪频率计算难题。最后,利用单景QuickBird高分辨率光学遥感影像,以海南岛三亚湾为研究区域进行了应用实验,结果表明,对12m以浅的浅海区域,在不需要任何辅助参数的情况下,反演获得了浅海地形(DEM),经与1:25000比例尺海图的水深对比验证,地形趋势吻合良好,反演水深的均方根误差为1.07m,相对水深误差为16.2%,表明该方法适合于浅海水下地形的提取,且具有无需实测水深数据和环境参数的支持的优点。
    Abstract: This paper presents a bathymetry inversion method using single-frame fine-resolution optical remote sensing imagery based on ocean-wave refraction and shallow-water wave theory. First, the relationship among water depth, wavelength and wave radian frequency in shallow water was deduced based on shallow-water wave theory. Considering the complex wave distribution in the optical remote sensing imagery, Fast Fourier Transform (FFT) and spatial profile measurements were applied for measuring the wavelengths. Then, the wave radian frequency was calculated by analyzing the long-distance fluctuation in the wavelength, which solved a key problem in obtaining the wave radian frequency in a single-frame image. A case study was conducted for Sanya Bay of Hainan Island, China. Single-frame fine-resolution optical remote sensing imagery from QuickBird satellite was used to invert the bathymetry without external input parameters. The result of the digital elevation model (DEM) was evaluated against a sea chart with a scale of 1:25 000. The root-mean-square error of the inverted bathymetry was 1.07 m, and the relative error was 16.2%. Therefore, the proposed method has the advantages including no requirement for true depths and environmental parameters, and is feasible for mapping the bathymetry of shallow coastal water.
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出版历程
  • 收稿日期:  2014-11-19
  • 修回日期:  2015-05-13

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