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Application of retracked satellite altimetry for inland hydrologic studies

机译:卫星回溯测高法在内陆水文研究中的应用

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摘要

We explored the application of satellite radar altimetry for the monitoring of small inland bodies of water and hydrologic studies using a water-detection algorithm, optimally retracked TOPEX/POSEIDON data at 10-Hz sampling, and investigated the use of radar backscatter to improve land cover classification. The procedure was demonstrated over Manitoba and south-western (SW) Ontario, and the Amazon River Basin study regions. Compared with an L-band synthetic aperture radar data generated water-land cover mask, the water-detection algorithm detected more water points over the Amazon basin. High correlation of 0.98 between the retracked 10-Hz altimetry and the gauge measurements in Manitoba confirmed that the retracked TOPEX data are more accurate than the non-retracked data, and with higher along-track spatial resolution by virtue of its higher sampling at 10 Hz.
机译:我们探索了使用水探测算法的卫星雷达测高仪在监测小型内陆水体和水文研究中的应用,以10 Hz的采样率对TOPEX / POSEIDON数据进行了优化的追踪,并研究了利用雷达反向散射来改善土地覆盖率分类。该程序已在曼尼托巴省和西南安大略省以及亚马逊河流域研究区进行了演示。与L波段合成孔径雷达数据生成的水陆覆盖面罩相比,水探测算法在亚马逊河流域探测到更多的水位。回溯的10 Hz测高与马尼托巴的轨距测量之间的高度相关性0.98证实了回溯的TOPEX数据比非回溯的数据更准确,并且由于其在10 Hz时的更高采样率而具有更高的沿航迹空间分辨率。

著录项

  • 来源
    《International journal of remote sensing》 |2010年第14期|P.3913-3929|共17页
  • 作者单位

    Geodetic Science School of Earth Sciences, The Ohio State University, Columbus, Ohio, USA;

    rnGeodetic Science School of Earth Sciences, The Ohio State University, Columbus, Ohio, USA;

    rnGeodetic Science School of Earth Sciences, The Ohio State University, Columbus, Ohio, USA;

    rnGeodetic Science School of Earth Sciences, The Ohio State University, Columbus, Ohio, USA;

    rnGeodetic Science School of Earth Sciences, The Ohio State University, Columbus, Ohio, USA;

    rnGeodetic Science School of Earth Sciences, The Ohio State University, Columbus, Ohio, USA;

    rnGeodetic Science School of Earth Sciences, The Ohio State University, Columbus, Ohio, USA;

    Department of Geomatics, National Cheng Kung University, No.1, Ta-Hsueh Road, Tainan 701, Taiwan, ROC;

    rnDepartment of Geomatics, National Cheng Kung University, No.1, Ta-Hsueh Road, Tainan 701, Taiwan, ROC;

    rnDepartment of Geosciences, University of Texas at Dallas, Richardson, Texas, USA;

    Universite de Toulouse, LEGOS UMR CNRS/UT3/CNES/IRD, Brasilia, Brazil;

    rnUniversidade Estadual de Amazonas, Manaus, Brazil;

    Universite de Toulouse, LMTG UMR CNRS/UT3/IRD, Brasilia, Brazil;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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