| 基于遥感影像的鄱阳湖地形提取方法 |
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| 引用本文： | 张龚泉,岳建平,刘胜男,王海龙,杨智翔,周航宇.基于遥感影像的鄱阳湖地形提取方法[J].测绘通报,2022,0(5):62-66+73. |
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| 作者姓名： | 张龚泉 岳建平 刘胜男 王海龙 杨智翔 周航宇 |
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| 作者单位： | 1. 河海大学地球科学与工程学院, 江苏 南京 211100;2. 江西省水利规划设计研究院, 江西 南昌 330029;3. 湘潭大学, 湖南 湘潭 411105 |
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| 基金项目： | 国家重点研发计划(2018YFC1508603)； |
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| 摘 要： | 采用遥感影像进行湖底地形反演具有操作简单、处理周期短的优势。本文提出了一种基于克里金法的湖底地形反演方法,以鄱阳湖为研究对象,通过分析周边8个水位站的空间位置与水位间的相关性,获取湖区边界水位变化趋势,利用克里金法反演湖区边界点的水位,将边界点的水位作为高程点进行湖底地形反演,并用实测湖底地形数据验证反演方法的可靠性。研究结果表明,通过克里金插值法反演得到的湖底地形,交叉验证的误差标准平均值在0.2 m以内;地形反演平均绝对误差在1 m以内,说明该方法可用于湖底地形反演且反演精度较高。
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| 关 键 词： | 湖底地形 水位 遥感影像 水位反演 鄱阳湖 |
| 收稿时间： | 2021-07-12 |
Terrain extraction method of Poyang Lake based on remote sensing image |
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| ZHANG Gongquan,YUE Jianping,LIU Shengnan,WANG Hailong,YANG Zhixiang,ZHOU Hangyu.Terrain extraction method of Poyang Lake based on remote sensing image[J].Bulletin of Surveying and Mapping,2022,0(5):62-66+73. |
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| Authors: | ZHANG Gongquan YUE Jianping LIU Shengnan WANG Hailong YANG Zhixiang ZHOU Hangyu |
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| Institution: | 1. School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China;2. Jiangxi Institute of Water Conservancy Planning and Design, Nanchang 330029, China;3. Xiangtan University, Xiangtan 411105, China |
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| Abstract: | The inversion of lake bottom topography using remote sensing images has the advantages of simple operation and short processing period. Taking Poyang Lake as the research object, this paper proposes a method of lake bottom terrain inversion based on Kriging method. By analyzing the correlation between the spatial position and water level of eight water level stations around Poyang Lake, the change trend of lake boundary water level is obtained. The Kriging method is used to retrieve the water level of Lake boundary points, and the water level of boundary points is used as elevation points for lake bottom terrain inversion and the shape data verifies the reliability of the inversion method. The results show that the standard average error of cross validation is less than 0.2 m, and the average absolute error of terrain inversion is less than 1 m, which indicates that this method can be used for lake bottom terrain inversion with high accuracy. |
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| Keywords: | lake bottom topography water level remote sensing image water level inversion Poyang Lake |
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