【摘要】：多波束測深系統(tǒng)以其較寬的海底探測覆蓋率、較高的數(shù)據(jù)采集效率和施測方便等優(yōu)點,在海洋測繪中得以廣泛的應用。近二三十年來,世界各國在多波束系統(tǒng)硬件和多波束數(shù)據(jù)處理軟件方面進行了大量研究,并取得了非常豐富的成果。多波束系統(tǒng)除了能夠獲取高密度的水深數(shù)據(jù)外,其數(shù)據(jù)包中還包含大量回波強度信息�；夭◤姸刃畔⒔�(jīng)過處理后得到的反向散射曲線和海底聲納圖像是用于海底底質(zhì)分類的重要數(shù)據(jù)基礎,國外針對此方向的研究已經(jīng)取得較為豐富的成果并形成了相應的基于多波束數(shù)據(jù)進行海底底質(zhì)分類的應用軟件。本文首先系統(tǒng)介紹了多波束進行海底底質(zhì)分類的原理;進而結合海上試驗內(nèi)容介紹EM3000型多波束系統(tǒng)進行海底測量的作業(yè)過程,得到實測數(shù)據(jù)后,對多波束數(shù)據(jù)進行提取,重點研究了多波束回波強度數(shù)據(jù)提取、融合、處理、以及在其基礎上的聲納圖像的生成;又通過對反向散射強度曲線和聲納圖像進行特征參數(shù)提取,結合分類器得到海底底質(zhì)的分布情況;最后編制了多波束數(shù)據(jù)海底底質(zhì)分類軟件,實現(xiàn)了基于多波束回波強度數(shù)據(jù)海底底質(zhì)范圍自動劃分。本文研究的主要成果有:1.針對多波束回波強度數(shù)據(jù)量大、格式多樣的問題,提出了回波強度數(shù)據(jù)像素化融合方法,實現(xiàn)了對零散的回波強度數(shù)據(jù)的整理,為回波強度數(shù)據(jù)的后處理提供了方便。2.編制了多波束回波強度數(shù)據(jù)處理研究軟件。
[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.
【學位授予單位】：中國地質(zhì)大學(北京)
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P715

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本文編號：2451476