航道水下数字高程模型的构建方法 |
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引用本文: | 曾涛,杨武年,卢秀明,刘汉湖,吴志春.航道水下数字高程模型的构建方法[J].物探化探计算技术,2011,33(1):83-86,121. |
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作者姓名: | 曾涛 杨武年 卢秀明 刘汉湖 吴志春 |
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作者单位: | 1. 成都理工大学,遥感与GIS研究所,四川,成都,610059 2. 广东正方圆工程咨询有限公司,广东,广州,510023 3. 成都勘察测绘研究院,四川,成都,610081 |
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基金项目: | 国家自然科学基金项目资助 |
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摘 要: | 以东莞市某航道水下数字地形构建为例,应用GPS—RTK技术并配合测深仪,荻取水下地形测量原始数据。通过VC+ObjectARXCAD二次开发,在构建格网DEM精度和运行效率方面,利用几种内插方法实现了数字航道水下地形模型的构建,得出在水下地形起伏不大的情况下.TIN线性内插在构建航道格网DEM中是一种高效率、高精度的方法。
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关 键 词: | 数字航道 水下地形 ObjectARX CAD+VC DEM内插 |
Modeling methods of digital elevation model for waterway |
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Institution: | ZENG Tao1,YANG Wu-nian1,LU Xiu-ming2,et al.(1.Institute of RS and GIS,Chengdu University of Technology,Chengdu 610059,China;2.Guangzhou Zhengfangyuan Engineering Consulting Co.,Ltd.Guangzhou,510023,China). |
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Abstract: | Based on the underwater terrain survey raw data obtained by GPS-RTK and depth sounder,the authors constructed a channel’s digital elevation model in Dongguan city by VC+ObjectARX CAD redevelopment and discussed the precision and efficiency of Several ways in Grid DEM construction.We conclude that the linear interpolation based on TIN is the high-efficiency and high-precision approach of constructing underwater Gird DEM,especially in the undulating terrain. |
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Keywords: | ObjectARX CAD+VC |
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