水下无线光通信技术研究与系统设计

库 引了不少科研组织和研究人员的投入。本课题的提出正是出于水下应用领域对通
信技术的需求日益增加的背景下，研究对象是水下无线光通信系统的相关技术和
发射与接收系统设计。
要
摘 本论文首先对当前国内外研究现状进行了较深入的分析了解，其次对水下无
线光通信系统的相关知识进行了理论概述，介绍了蓝绿激光的海水信道特性，对
文 比了当前较常见的几种水下通信方法，分析了水下无线光通信的几项较关键的技
论 术，最后完成了系统的相关设计，并对应用于语音传输的通信系统进行了实验。 在水下无线光通信系统设计中，提出了一套基于连续激光器的系统设计方
士 案，采用的是连续蓝光模组 TTL 调制发射的方式，AMBE-1000 低速率语音编码，
underwater communication, and analyzed the key technology of underwater wireless optical communication, finally has completed the relevant design of the system, and
厦pulse laser, and according to the characteristics of pulse laser output, we have carried
on the related design research on the processing of emission signal by "return zero" and the amplification plastic processing of the received signal.
摘 design of transmit/receive system. Firstly this paper described the current research status at home and abroad
文 in-depth knowledge, secondly has carried on the theoretical overview of the
Key Words: underwater wireless optical communication; blue/green laser; AMBE; RZ; acousto optically Q-switched
III
目录
摘 要 .......................................................................................................................................... I 第 1 章 绪论 ............................................................................................................................ 1
库 要 摘 文 论 士 硕 博 学 大 门 厦
库 要 摘 文 论 士 硕 博 学 大 门 厦
库 要 摘 文 论 士 硕 博 学 大 门 厦
摘要
随着海洋探测、水下观察、潜艇对潜通信等水下应用领域对通信技术的需求
和要求不断提高，构建高数据传输速率的水下通信系统成为了一个新技术课题，
当前，水下无线光通信技术以其具有极高的信息承载能力和传输速率等优势，吸
related measurement and analysis of the underwater transmission experiment by this
门 system. Based on this, we have designed another scheme which based on a high power
1.5 研究的主要内容........................................................................................................ 10
论 第 2 章 水下无线通信系统概述................................................................................ 12 2.1 引言 .............................................................................................................................. 12 士 2.2 蓝绿激光海水信道特性 .......................................................................................... 12 硕 2.2.1 海水的光吸收 ................................................................................................. 12 博 2.2.2 海水的光散射 ................................................................................................. 13 学 2.2.3 海水中的激光传输特性............................................................................... 14 2.3 现行的几类水下无线通信方法 ............................................................................ 15 大 2.3.1 水声通信 .......................................................................................................... 15 门2.3.2 低频无线电波通信 ........................................................................................ 16 2.3.3 水下电磁耦合无线通信............................................................................... 16
针对适用于水下无线光通信的光源设计研究，提出了一种掺 Pr3+:YLF 声光
门 调 Q 固体激光器的设计方案，并对其进行了可行性分析。
厦关键词：水下无线光通信；蓝绿激光；AMBE；归零码；声光调 Q
I
Abstra百度文库t
The need and demand for communication technology have been improving in many underwater applications, such as ocean exploration, underwater observation and submarine communication, building a high data transmission rate of underwater communication system has become a new technology project. At present, the underwater wireless optical communication technology with the advantages of high
要 underwater application range of communication technology. The research object is the
relevant technology of underwater wireless optical communication system and the
硕 由单片机控制处理，高速光电探测器进行信号接收与转换，通过信号的恢复处理 博 实现了语音传输，并对该系统的水下传输实验进行了相关测量和分析。
在此基础上，提出了另一套基于脉冲高功率激光器的设计方案，并根据脉冲
学 激光输出的特点，对发射信号的“归零”处理和接收信号的放大整形处理进行了 大 相关设计研究。
Aimed at the study of light source design, which was suitable for the underwater wireless optical communication, we have come up with the design of an acousto optically Q-switched Pr3+:YLF doped solid state laser, and have carried through the feasibility analyzed.
士 has proceed the experimental study for voice transmission. 硕 In the design of underwater wireless optical communication system, we have put 博 forward a set of system design scheme based on continuous laser, which used a blue
underwater wireless optical communication system, introduced the blue/green laser
论 channel characteristic under water, compared the current commonly used method of
库 information capacity and transmission rate, attracted many research organizations and
researchers. This project is just under the background of increasing demand for the
detector for receiving and converting the signal, and realized the voice signal transfer
大 through the recovery process of the received signal, and then, we have done the
1.1 引言 ................................................................................................................................ 1
库 1.2 研究背景 ....................................................................................................................... 1 要 1.3 国内外研究现状.......................................................................................................... 2
light module with a modulation way of TLL as transmitter, AMBE-1000 for low rate
学 speech coding, STC89C52 for microcomputer processing, high-speed photoelectric
1.3.1 国外水下无线光通信现状 ............................................................................ 3
摘 1.3.2 国内水下无线光通信现状 ............................................................................ 8 文 1.4 本课题研究目标........................................................................................................ 10