| 利用ADCP测流数据建立河床DEM方法研究 |
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| 引用本文： | 张辉,危起伟,杨德国.利用ADCP测流数据建立河床DEM方法研究[J].地理空间信息,2007,5(5):114-116. |
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| 作者姓名： | 张辉 危起伟 杨德国 |
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| 作者单位： | 1. 华中农业大学水产学院,湖北武汉,430070
2. 中国水产科学研究院长江水产研究所,湖北荆州,434000 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | ADCP(声学多普勒流速剖面仪)是一种利用声学多普勒原理测验水流速度剖面的仪器,它是近十几年才发展和应用于河流流量测验的新的流量测验方法。ADCP在流量测验过程中,能同时测出水深数据,但由于声束角的存在,其所测水深数据并不十分准确,通过导出数据、投影转换、坐标及高程求解等步骤,可以求得河床精确位置所对应的高程,从而建立河床的DEM,扩展其用途。精度检验结果表明,这种方法在实际应用中具有一定的可行性。
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| 关 键 词： | ADCP DEM 河床 |
| 文章编号： | 1672-4623（2007）05-0114-02 |
| 修稿时间： | 2006-02-28 |
Method for Using ADCP's Data to Build DEM for the Riverbed |
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| ZHANG Hui,WEI Qiwei,YANG Deguo.Method for Using ADCP''''s Data to Build DEM for the Riverbed[J].Geospatial Information,2007,5(5):114-116. |
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| Authors: | ZHANG Hui WEI Qiwei YANG Deguo |
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| Institution: | 1.Huazhong Agricultural University, College of Fishery, Wuhan 430070, China; 2.Yangtze River Fisheries Research Institute, Chinese Academy of Fisheries Sciences, Jingzhou 434000, China |
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| Abstract: | ADCP (Acoustic Doppler Current Profiler) is an instrument using acoustics Doppler's principle to measure velocity of flow in profile. It is a new discharge measurement method that has been developed and a pplied in the discharge measurement of rivers only more than ten years. In the discharge measurement process of ADCP,it can determine the water depth at the same time,but as the existence of sound beam angle,the data of water depth not very accurate,through derived the data,the projection transformed,coordinates and elevation solution and so on,we can obtain the elevation of the exact river bed location,thus established DEM of the river bed,expandedits use. The accuracytest indicatedthat,this methodhassome feasibility inthepractical application. |
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| Keywords: | ADCP DEM 河床 |
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