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

【摘要】：隨著高分辨率攝像機(jī)與高分辨率聲納在水下探測(cè)領(lǐng)域的廣泛普及，它們對(duì)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(lǐng)域，主要采用的手段是水聲通信，而傳統(tǒng)的聲學(xué)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(shí)時(shí)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(guān)的發(fā)光二極管，激光二極管產(chǎn)品由于其價(jià)格低廉，能耗低，被廣泛被應(yīng)用在光通信領(lǐng)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(shù)被廣泛應(yīng)用在監(jiān)控與安防領(lǐng)域。在深海探測(cè)領(lǐng)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(gè)藍(lán)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(lán)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(duì)水下機(jī)器人與傳感器的高速數(shù)據(jù)傳輸需求，設(shè)計(jì)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(xiàng)工作： 首先，分析了光在在水下的傳輸特點(diǎn)與在傳播過程中造成誤差的主要原因。然后設(shè)計(jì)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(duì)裝置的各項(xiàng)參數(shù)進(jìn)行設(shè)計(jì)，使其滿足基本通信要求。本論文的主要內(nèi)容為對(duì)激光通信系統(tǒng)在實(shí)際應(yīng)用中的實(shí)用性進(jìn)行驗(yàn)證，為此分別進(jìn)行了數(shù)字字符信號(hào)，模擬音頻信號(hào)，模擬視頻信號(hào)等不同信號(hào)格式的數(shù)據(jù)傳輸，并對(duì)實(shí)驗(yàn)結(jié)果進(jìn)行分析。 在論文的最后，對(duì)實(shí)驗(yàn)進(jìn)行總結(jié)并對(duì)未來的工作進(jìn)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(xué)位授予單位】：中國海洋大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN929.1;TN248.4

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本文編號(hào)：1590557