本文選題：水下　切入點：激光　出處：《中國海洋大學》2014年碩士論文　論文類型：學位論文

【摘要】：隨著高分辨率攝像機與高分辨率聲納在水下探測領域的廣泛普及，它們對數(shù)據(jù)傳輸速率的要求也越來越高，在傳統(tǒng)水下通信領域，主要采用的手段是水聲通信，而傳統(tǒng)的聲學通信由于固有頻率太低，無法滿足高清視頻與高分辨率數(shù)據(jù)實時傳輸?shù)囊�。由于電磁波在海水中存在快速衰減的特性，無法使用其作為信息傳輸?shù)妮d體。高速開關的發(fā)光二極管，激光二極管產品由于其價格低廉，能耗低，被廣泛被應用在光通信領域，在無線光通信方向，，利用大氣中的紅外窗口，自由空間光通信（FSO）技術被廣泛應用在監(jiān)控與安防領域。在深海探測領域，傳統(tǒng)通信方式無法滿足大數(shù)據(jù)量與高數(shù)據(jù)傳輸速率的通信要求，與大氣信道相似，在海水信道中也存在一個藍綠光的透光窗口，基于以上原因，我們提出了一套通過使用藍綠激光作為信息傳輸載體的水下高速無線通信系統(tǒng)解決方案。 本文針對水下機器人與傳感器的高速數(shù)據(jù)傳輸需求，設計了一套基于488nm低功耗激光二極管發(fā)射器與光電倍增管接收器的的水下高速數(shù)據(jù)傳輸系統(tǒng)，本文主要做了如下幾項工作： 首先，分析了光在在水下的傳輸特點與在傳播過程中造成誤差的主要原因。然后設計了一套基于488nm激光二極管與光電倍增管的單工水下無線激光通信系統(tǒng)，對裝置的各項參數(shù)進行設計，使其滿足基本通信要求。本論文的主要內容為對激光通信系統(tǒng)在實際應用中的實用性進行驗證，為此分別進行了數(shù)字字符信號，模擬音頻信號，模擬視頻信號等不同信號格式的數(shù)據(jù)傳輸，并對實驗結果進行分析。 在論文的最后，對實驗進行總結并對未來的工作進行展望。
[Abstract]:With the high resolution camera with high resolution sonar detection in the field of underwater widespread, they require the rate of data transmission is more and more high, in the field of traditional underwater communication, mainly by means of acoustic communication, acoustic communication and traditional due to the inherent frequency is too low, can not meet the real-time transmission of high-definition video with high resolution data requirements. Because of the characteristics of rapid attenuation of electromagnetic wave in the sea, which cannot be used as the carrier of information transmission. The light emitting diode high speed switching diode laser products, because of its low price, low energy consumption, is widely used in the field of optical communication, wireless optical communication, the use of infrared window in the atmosphere, free space optical communication (FSO) technology has been widely used in monitoring and security fields. In the field of deep-sea exploration, the traditional means of communication can not meet the large amount of data and high data transmission The communication requirement of speed is similar to that of atmospheric channel. There is also a blue and green light transmitting window in seawater channel. For these reasons, we propose a solution of underwater high-speed wireless communication system by using blue-green laser as the carrier of information transmission.
Aiming at the demand of high-speed data transmission for underwater robot and sensor, a set of underwater high-speed data transmission system based on 488nm low power laser diode transmitter and photomultiplier receiver has been designed.
First, analyze the main reasons of the transmission characteristics of light in the under water and in the dissemination process. Then the error caused by the design of a 488nm based laser diode and photomultiplier tube simplex underwater wireless laser communication system, the parameters of the device were designed, which can meet the basic requirements of communication. The main content of this paper in order to verify the practicability of the laser communication system in practical application, so we carry out digital character signal, analog audio signal, data transmission of analog video signal in different signal format, and to analyse the experimental results.
At the end of the paper, the experiment is summarized and the future work is prospected.

【學位授予單位】：中國海洋大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN929.1;TN248.4

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本文編號：1590557