水下远程数据有线传输技术研究
文献类型：学位论文
| 作者 | 郑剑锋 |
| 学位类别 | 博士 |
| 答辩日期 | 2004 |
| 授予单位 | 中国科学院声学研究所 |
| 授予地点 | 中国科学院声学研究所 |
| 关键词 | 拖线阵声纳 水下串行数据传输 数据采集 同步互联 以太网型声纳 |
| 中文摘要 | 基阵信号的远程传输是拖曳线列阵声纳要解决的关键技术之一。早期采用模拟信号传输的拖缆因为芯线数多、直径和重量大、信号衰减和畸变严重，以及信号间干扰较大等缺点，极大地限制了拖曳线列阵声纳的作战性能。近10年来，随着芯片制造工艺和微电子技术的不断发展，在数字化平台上研制小型化的拖曳线列阵声纳数据采集、传输电路己经成为可能。研究数字化的水下远程数据传输技术对于声纳技术的发展具有很强的工程意义，可广泛应用于岸站警戒系统、机载吊放声纳，以及海洋探测、石油勘探等领域。本论文的研究内容主要是水下数据的有线传输技术，水声信号的其它传输方式不属于本文的研究内容。本文提出并设计了基于高速串行传输技术的小型化水下数据传输系统，以及基于嵌入式操作系统卜C／OS-II的以太网接入板卡，并分析了以太网型综合声纳系统的基本结构。以下是文中各章节内容简要描述：第一章从网络分层模型的角度分析各种网络技术，总结了当前国外拖线阵声纳和水下警戒系统中数据传输技术的发展水平和状况；第二章是论文的核心部分，针对拖线阵应用，提出利用高速串行传输技术来实现小型化的水下数据传输系统，该方法选用CY7B923／CY7B933作为物理层芯片解决水声信号的高速串行传输，采用复用／竞争的思想实现多路数据混合传输，并通过同步互联技术解决模块间的同步采集问题，具体工程设计中以可编程逻辑器件为核心设计了数据采集模块和串行传输模块；第三章测试了数据采集与传输模块的性能指标，数据传输率达到200Mbit／s，误码率小于10-8，物理尺寸为20mm*110mm，该系统可以成功替代传统的多芯电缆模拟传输系统，其突出优点是：数据传输率高，信号动态范l％］宽，抗干扰能力强，且体积小重量轻，可以应用于某主／被动拖线阵声纳系统：第四章对以太网技术在声纳系统中的应用方面做了一定探讨，给出了基于以太网的综合声纳数据传输结构，并通过设计基于嵌入式操作系统协C／OS-II的以太网接入板卡，发现了以太网应用于声纳数据传输中存在实时性问题，提出可以通过提高以太网速率，改善网络协议的方法来解决以太网的实时性问题，为研究基于以太网技术的综合声纳系统打下了基础。水下远程数据有线传输技术目前作为国内水声工程中急需解决的一个工程问题，国内研究还处于起步阶段，作者希望本文有助于促进此项技术的深入研究以及进一步的工程应用和推广。 |
| 英文摘要 | Long distance data transmission is one of the key technologies in towed-array sonar system. The performance of towed-array sonar system has been greatly limited by traditional multi-lead cable for its large diameter and heavy weight, serious signal attenuation and signal interference. During the last decade, the fast development of CMOS chips' manufacture technologies and micro-electronics technologies has make it possible to design mini-size sensors data transmission circuits on digital platforms. Researching underwater long-distance data transmission technology is helpful to the development of towed-array sonar system and which can also be used in airborne sonar, shore-alertness systems, ocean detection and oil-exploration systems. The main issue discussed in this paper is the underwate cable data transmission system, and other modes of underwater data transmission are not included in this paper. Underwater data transmission system based on high-speed serial data transmission technology is proposed in this paper, in addition, an Ethernet interface card based on JJ.C/OS-11 embedded operation system is designed and the architecture of Ethernet sonar systems is analyzed. The content of each chapter will be arranged as follows: Network technologies are analyzed from the point of view of network-layer module in chapter 1, and the development status of data transmission technology in towed-array sonar and underwater alertness systems are reviewed. Chapter 2 is the core part of this paper. A kind of multi-channel data transmission system based on high-speed serial transmission technology is proposed, which is a new solution to data transmission of towed-array sonar system. The following techniques are used in the data transmission system mentioned above: using CY7B923/CY7B933 as physical layer chips to transmit acoustic signal, transmitting the whole data in one channel by using the idea of multiplexing and competing, and using synchronously interconnected technology to synchronize acoustic signal sample. Signal sample modules and serial transmission modules are designed with the core of programmable logic devices. The performance of the modules has been tested and the results are given in Chapter 3. The size of the modules has been greatly reduced to 20mm * 110 mm, data transmission rate is up to 200Mbit/s, code error rate is less than 10-8. The system can substitute the traditional multi-lead cable and it has such advantages as high transmission rate, long transmission distance, wide dynamic range, excellent capability of anti-disturbance, small volume and light weight. Thus, the multi-channel data transmission system is suitable for the active/passive towed-array sonar system. Ethernet technology is used to extend applications of the serial data transmission system, the sonar data transmission structrue based on Ethernet is proposed in Charpter 4. It is found that the real-time capability of Ethernet is not satisfying when designing Ethernet interface cards based on μC/OS-II embedded operation system, but the real-time capability of Ethernet can be improved by using higher data rate and revising network protocols. Underwater long-distance data transmission technology is one of the urgent issues, but related research is just beginning. The author hopes this paper will further the research in this field and shorten the period of engineering application. |
| 语种 | 中文 |
| 公开日期 | 2011-05-07 |
| 页码 | 106 |
| 源URL | [http://159.226.59.140/handle/311008/812]  |
| 专题 | 声学研究所_声学所博硕士学位论文_1981-2009博硕士学位论文 |
| 推荐引用方式 GB/T 7714 | 郑剑锋. 水下远程数据有线传输技术研究[D]. 中国科学院声学研究所. 中国科学院声学研究所. 2004. |
入库方式： OAI收割
来源：声学研究所
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