用于底质分类的EM3000多波束测量数据处理及软件开发
发布时间：2019-04-01 10:16
【摘要】：多波束测深系统以其较宽的海底探测覆盖率、较高的数据采集效率和施测方便等优点,在海洋测绘中得以广泛的应用。近二三十年来,世界各国在多波束系统硬件和多波束数据处理软件方面进行了大量研究,并取得了非常丰富的成果。多波束系统除了能够获取高密度的水深数据外,其数据包中还包含大量回波强度信息。回波强度信息经过处理后得到的反向散射曲线和海底声纳图像是用于海底底质分类的重要数据基础,国外针对此方向的研究已经取得较为丰富的成果并形成了相应的基于多波束数据进行海底底质分类的应用软件。本文首先系统介绍了多波束进行海底底质分类的原理;进而结合海上试验内容介绍EM3000型多波束系统进行海底测量的作业过程,得到实测数据后,对多波束数据进行提取,重点研究了多波束回波强度数据提取、融合、处理、以及在其基础上的声纳图像的生成;又通过对反向散射强度曲线和声纳图像进行特征参数提取,结合分类器得到海底底质的分布情况;最后编制了多波束数据海底底质分类软件,实现了基于多波束回波强度数据海底底质范围自动划分。本文研究的主要成果有:1.针对多波束回波强度数据量大、格式多样的问题,提出了回波强度数据像素化融合方法,实现了对零散的回波强度数据的整理,为回波强度数据的后处理提供了方便。2.编制了多波束回波强度数据处理研究软件。
[Abstract]:The multi-beam bathymetric system has been widely used in ocean surveying and mapping because of its wide seabed detection coverage, high data acquisition efficiency and convenient measurement. In the past 20 or 30 years, many countries in the world have done a lot of research on the hardware and software of multi-beam system, and have made a great deal of achievements in the field of multi-beam system hardware and multi-beam data processing software. The multi-beam system not only can obtain high-density water depth data, but also contains a lot of echo intensity information. The backscattering curves and sea bottom sonar images obtained by processing the echo intensity information are the important data basis for bottom classification. Foreign research on this direction has achieved rich results and formed the corresponding application software for bottom classification based on multi-beam data. In this paper, firstly, the principle of multi-beam classification of seabed sediments is systematically introduced. Then the operational process of sea floor survey by EM3000 multi-beam system is introduced. After the measured data is obtained, the multi-beam data is extracted, and the multi-beam echo intensity data extraction, fusion and processing are mainly studied. And the generation of sonar image based on it; By extracting the characteristic parameters of the backscatter intensity curve and sonar image, and combining the classifier, the distribution of seabed sediment is obtained. Finally, the seabed sediment classification software based on multi-beam data is programmed to realize the automatic division of seabed sediment range based on multi-beam echo intensity data. The main results of this study are as follows: 1. In order to solve the problem of large amount of data and various formats of multi-beam echo intensity, a pixel fusion method of echo intensity data is proposed, which realizes the arrangement of scattered echo intensity data, which provides convenience for the post-processing of echo intensity data. 2. A multi-beam echo intensity data processing software is developed.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P715
本文编号：2451476
[Abstract]:The multi-beam bathymetric system has been widely used in ocean surveying and mapping because of its wide seabed detection coverage, high data acquisition efficiency and convenient measurement. In the past 20 or 30 years, many countries in the world have done a lot of research on the hardware and software of multi-beam system, and have made a great deal of achievements in the field of multi-beam system hardware and multi-beam data processing software. The multi-beam system not only can obtain high-density water depth data, but also contains a lot of echo intensity information. The backscattering curves and sea bottom sonar images obtained by processing the echo intensity information are the important data basis for bottom classification. Foreign research on this direction has achieved rich results and formed the corresponding application software for bottom classification based on multi-beam data. In this paper, firstly, the principle of multi-beam classification of seabed sediments is systematically introduced. Then the operational process of sea floor survey by EM3000 multi-beam system is introduced. After the measured data is obtained, the multi-beam data is extracted, and the multi-beam echo intensity data extraction, fusion and processing are mainly studied. And the generation of sonar image based on it; By extracting the characteristic parameters of the backscatter intensity curve and sonar image, and combining the classifier, the distribution of seabed sediment is obtained. Finally, the seabed sediment classification software based on multi-beam data is programmed to realize the automatic division of seabed sediment range based on multi-beam echo intensity data. The main results of this study are as follows: 1. In order to solve the problem of large amount of data and various formats of multi-beam echo intensity, a pixel fusion method of echo intensity data is proposed, which realizes the arrangement of scattered echo intensity data, which provides convenience for the post-processing of echo intensity data. 2. A multi-beam echo intensity data processing software is developed.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P715
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