【摘要】：Ocean observations is the base of study, development and utilization ocean. Ocean observation instruments and marine survey platform are tools and methods of ocean observations. The present age is the "information age" as to the relationship between humans and nature, firstly, have to obtain information, then we can process information, disseminate information, and use them. Therefore, obtain information is the most basic,most important part. Ocean observation instruments and observation techniques is the base of marine industry research. Use marine radar to monitor the oil spill on the sea, is combine by the radar, the oil spill image recorder and multimedia computer. Finally, compose a radar oil spill monitoring system. Use marine radar monitor oil spill not only has many incomparable advantages than by other means, but also finish the numerical calculation process of oil spill monitor radar. This was a new breakthrough of the oil spill monitoring and surveillance means in china. According to marine radar imaging principle, apply the marine radar oil spill monitoring system by independent research and development, complete the following tasks: 1、Picked image for the area of Dalian Port where an oil spill accident happened on 7.16.The speed of image acquisition is about 28 images per minute, and picked about 900 images in all. 2、With the application of the Image, which is an image analysis and processing software, this paper did the image filtering processing, the average processing and binarization. Among them, the use of the image gray value distribution of the threshold to determine the statistical properties of S, so the correct value for the binarization of treatment is a major innovation of this article. 3、Using the preparation process of the Fourier transform,this paper filtered the image in spatial frequency domain, and compared with the results of space domain processing, it expanded the image processing methods of the oil spill monitoring system.
【圖文】：

反射波越強。打到油膜上的大部分電磁波被油膜吸收或者散射掉了，平滑的油膜表面減少了雷達的回波信號。如圖2.1所示。圖2.1油膜覆蓋海水示意圖 Fig.2.1SehetnatiediagramoftheoilfiImcoveringthesea因此，受到油膜覆蓋的海面對于航海雷達發(fā)射出的脈沖波的散射系數(shù)明顯比周圍沒有油膜覆蓋的清潔海面的要小得多，雷達接收到的油膜回波信號要比清潔

海區(qū)的雷達回波信號弱。這種差別在雷達圖像上明顯區(qū)分出清潔海區(qū)和溢油區(qū)，即清潔海區(qū)回波信號比較強，是高亮度顯示，而溢油區(qū)回波信號很弱，在圖像上呈黑區(qū)顯示。由此航海雷達能夠監(jiān)測到海面溢油，如圖2.2所示。圖2.2油膜回波強度示意圖 Fig.22Sehematiediagramofeehointensityfilm應(yīng)用自主研發(fā)的航海雷達圖像記錄儀提取到雷達掃描的溢油圖像，將圖像信號轉(zhuǎn)換為數(shù)值信號，采用雷達圖像處理技術(shù)識別和解譯油膜性質(zhì)，計算相應(yīng)的溢油參數(shù)。雷達回波信號的大小與發(fā)射的電磁波的波長、偏振方向有關(guān)，也與油膜的性質(zhì)有關(guān)。環(huán)境因素對雷達回波信一號也有很大的影響，包括海面狀況、大氣中的分子等。2.4國際先進雷達溢油探測系統(tǒng)隨著海洋事業(yè)的發(fā)展，，沿海各國對于海洋環(huán)境問題十分重視，溢油問題更是重中之重。目前，在雷達溢油探測領(lǐng)域中技術(shù)比較先進，設(shè)備儀器比較成熟的有四家:德國的 WdMo511海浪監(jiān)測系統(tǒng)中的溢油監(jiān)測功能，加拿大
【學位授予單位】：大連海事大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：X55

【引證文獻】

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