基于内河航行基准面的相对水深数据快速处理技术研究

发布时间：2018-01-07 06:40

本文关键词：基于内河航行基准面的相对水深数据快速处理技术研究　出处：《重庆交通大学》2016年硕士论文　论文类型：学位论文

【摘要】：在我国,内河航道早已成为内河航运的重要运输载体,它不仅关系着沿江(河)相关产业带的发展,同时也关系着国家内河航运事业的发展。如何快速地得到高精度的相对水深数据,提供连续且无缝的航行基准面数据,对于内河航运业而言至关重要。目前,电子航道图所采用的航行基准面具有离散性与跳变性,越来越不能满足实际应用的需求。不仅如此,在追求精度与准确性的信息化大背景下,内河主要辖区内所有电子航道图的数据预处理工作的工作量十分庞大,数据预处理效率低下,严重制约着电子航道图数据的及时更新。因此,寻求更快速更高效的自动预处理技术具有十分重要的意义。本论文的研究旨在寻找到跨越不同的连续河段时,不同基面之间进行深度转换的方法。根据电子航道图的相对水深数据,对相关航行基准面进行曲面拟合,快速得到连续的、不间断的航行基准面数据。通过本论文的理论研究,我们能得到一种在内河主要辖区内的天然航道,测量基准水平面的确定方法,并由此计算航道测量水深数据,即从高程数据到相对水深数据的转换结果。其中最核心的问题就是连续航行基准面模型的构建,而连续曲面的构建常常需要基于散乱数据点作曲面拟合。在内河航道的数据点实际分布情况下拟合曲面,与正常情况下使用的曲面拟合方法存在差异。所以本文还需要探寻一种辅助方法,解决特殊数据分布情况下可能带来的拟合精度低下的问题。本文主要做了以下几个方面的研究内容:首先,根据重庆长江航道局所提供的相关水位观测数据资料,对其进行全方位分析,为确定高精度的航行基准面提供数据基础。其次,选择合适的曲面拟合及内插方法,同时借助相关的水文资料,生成兼具连续性与完整性的航行基准面。但是在此之前,必须找到一种拟合高精度曲面的辅助方法,解决因数据点特殊分布情况带来的问题。最后,对人工处理方式与快速处理的方式进行对比。通过数据结果分析,列出算法模型针对对内河航道中航行基准面拟合存在的优势。
[Abstract]:In our country, inland waterway transport has become an important carrier of inland shipping, it is not only related to the Yangtze River (River) with the development of related industries, but also the relationship between the development of the inland river shipping countries. Relative water depth data in high accuracy how quickly, to provide navigation datum data continuous and seamless, vital for inland river shipping industry. At present, navigation reference mask electronic navigation chart using the discrete jump and degeneration, increasingly unable to meet the needs of practical application. Not only that, in the background of information seeking precision and accuracy under the jurisdiction of all major inland electronic navigation chart data processing workload is very large, the data the pretreatment efficiency is low, seriously restricting the timely updating of electronic map data channel. Therefore, seeking more rapid automatic pretreatment technology more efficient with ten important meaning Meaning. The purpose of this paper is to find the river across the continuum when different methods were different between the base depth conversion. According to the relative water depth data of the electronic channel chart, surface fitting of navigation datum, fast continuous, uninterrupted navigation datum data. Through the theoretical study of this thesis, we to get a natural waterway in the inland river area, determination method of measuring datum horizontal surface, and calculate the hydrographic water depth data from the elevation data to relative depth data conversion results. One of the most core construction problem is the continuous navigation datum model, and construct the continuous surface often require surface fitting scattered data points based on the actual situation. The distribution of the fitting surface in inland waterway data points, existing surface fitting method and used under normal conditions to this difference. We also need to explore a supplementary method to solve the special data distribution may bring the problem of low precision. This paper mainly do the following aspects: first, according to the water level of Chongqing Yangtze River Waterway Bureau provided the observation data, comprehensive analysis of the data, provide the basis for determining the voyage the datum of high precision. Secondly, choose the appropriate surface fitting and interpolation method, and by means of hydrological data, generating both the continuity and integrity of the navigation datum. But before that, we must find an auxiliary method of high accuracy surface fitting, due to data points to solve special distribution problems finally, on artificial processing and rapid processing methods were compared. The results of data analysis, list the algorithm model for inland waterway navigation datum fitting existence Advantage.

【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U675.81

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