摘要
多波束测深系统是获取高精度水下地形信息的重要手段,但由于一次数据采集量大且地形构建过程复杂,导致成本较高,在水下冲刷淤积定量评估作业中应用较少。以观音岩水电站2013年、2014年两期点云文件为数据源,综合运用多波束测深技术、Arc Engine组件式开发技术和Matlab强大的数学分析功能,完成了从多波束数据存储管理、海量点云有效信息挖掘到冲刷淤积时空格局分析的成套系统智能化研究。结果表明,该系统在水下地形变化监测中具有方便、快捷、精度高、成果多样化和直观性强等优点,对冲刷淤积核查分析的准确度有极大提高。
Multi-beam bathymetry system is an important means in underwater topographic survey. While there are few applications of multi-beam sounding system in the process of underwater erosion and deposition because of a large quantity of data collection and the complexity steps for DEM generation. Taking the point clouds of Guanyinyan hydropower station acquired in the year of 2013, 2014 as experimental data, we comprehensively used multi-beam echo sounding technique, Com GIS technology, a rich math library provided by Matlab to realize the intelligent system research which supported data management, information extraction and the spatio-temporal pattern analysis of erosion and deposition. After tests, the foresaid research result proves that this system has the advantages of convenience, high-precision and objectivity.
出处
《地理空间信息》
2018年第5期119-122,共4页
Geospatial Information
关键词
多波束测深技术
大数据信息挖掘
冲刷淤积
时空格局分析
multi-beam echo sounding technique
big data information mining
erosion and deposition
spatio-temporal pattern analysis
