| 基于多波束声纳数据与反射模型的水下地形重建 |
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| 引用本文： | 顾晨,黄微,李先华.基于多波束声纳数据与反射模型的水下地形重建[J].测绘科学,2011,36(4):80-82. |
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| 作者姓名： | 顾晨 黄微 李先华 |
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| 作者单位： | 上海大学遥感与信息科学研究中心,上海,200072 |
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| 摘 要： | 利用多波束声纳数据重建水下地形,构建高空间分辨率的数字高程模型(DEM)对于在复杂水下区域的物质勘探、目标检测等方面有重要实用意义.然而,多波束声纳系统直接获得的测深数据空间分辨率有限本文基于多波束声纳系统采集的稀疏测深数据(空间位置)和密集回波强度数据(图像性质)来构建水下复杂地形高空间分辨率数字高程模型.利用采集的...
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| 关 键 词： | 水下地形重建 多波束声纳 反射模型 回波强度 |
Underwater topography reconstruction based on multibeam data and reflection model |
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| GU Chen,HUANG Wei,LI Xian-hua.Underwater topography reconstruction based on multibeam data and reflection model[J].Science of Surveying and Mapping,2011,36(4):80-82. |
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| Authors: | GU Chen HUANG Wei LI Xian-hua |
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| Institution: | (Research Center of Remote Sensing and Spatial Information Science,Shanghai University,Shanghai 200072,China) |
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| Abstract: | To explore materials and objectives underwater,it is meaningful to reconstruct underwater Digital Elevation Model(DEM) with high spatial resolution by using multibeam sonar data.However,the spatial resolution of bathymetry data which directly obtained by the multibeam sonar system is limited.In this paper,a DEM reconstruction method based on bathymetry data and dense backscatter data was proposed.In this method,dense backscatter data was simulated by seabed reflection model and underwater topography parameters were derived from bathymetry data.The bathymetry data was repeatedly adjusted until the simulated backscatter data was close to the raw backscatter data with acceptable error.Finally,DEM was reconstructed by the bathymetry data.The results showed that this algorithm was superior to other common interpolation algorithm.The method provided the resolution to underwater DEM construction by using multi-beam sonar data.And it could be suitable for deep sea. |
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| Keywords: | underwater topography reconstruction multibeam sonar reflection model echo intensity |
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