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题名	紫外光散射通信系统技术的研究
作者	熊飞
学位类别	硕士
答辩日期	2007
授予单位	中国科学院上海光学精密机械研究所
导师	董作人
关键词	紫外光通信 日盲 紫外散射 非视线通信
其他题名	Study of ultraviolet scattering communication system technology
中文摘要	紫外光信息传输技术是一种新兴的无线光通信技术。由于紫外光在近地低空大气存在“日盲区”（200nm－300nm）及其在低空大气中的强烈吸收和散射作用的特性，所以可以利用紫外光实现短程、安全、保密和非视线通信。紫外光通信技术适合应用于海面舰艇之间的隐蔽通信，或大型舰艇甲板上的局域无线通信，近年来，受到国内外的广泛关注。因此，对紫外光散射通信系统技术进行研究具有重要意义。 本论文研究分析了紫外光单次散射模型和紫外光的大气传输特性，详细介绍了紫外光通信系统的构成原理，以及紫外光源、探测器和滤光片等关键器件的性能特点。提出了基于低压汞灯的紫外光通信实验装置总体设计方案，可实现语音和数字通信方式。 详细阐述了紫外光数字和语音通信实验装置中发射端和接收端的硬件设计：设计了以半桥驱动器IR2153为核心的驱动控制发射端，实现了紫外光源高压调制驱动、紫外光的语音和数字信号频率调制；设计了以解调器XR2211为核心的接收端，实现了语音和数字信号的解调。 建立了装置通信质量测试平台，测试和分析了该装置的语音和数字通信性能。在非视线紫外光传输情况下，装置在通信距离为18m时，可实现比特率为1200bit/s的数字通信，误码率为2.2 ；装置在通信距离为24m时，其传输的语音信号虽然有较大的噪声，但可以分辨。在各种不同条件下，对紫外灯数字和语音通信实验装置的通信性能分别进行了测试，重点研究分析了通信实验装置在非视线紫外光传输方式下，通信距离和接收仰角的变化对实验装置性能的影响。 进行采用紫外LED的非视线通信实验，验证了紫外LED用于非视线通信的可行性。提出了一个基于日盲波段紫外LED的短距离非视线通信方案。
英文摘要	Ultraviolet (UV) communicaiton technology is a new wireless optical communication technology. Due to the existence of solar-blind spectrum, strong UV absorbability and scattering characteristic of ultraviolet in the low space atmosphere, ultraviolet communication technology enables short-range, safe, secret and non-line-of-sight (NLOS) communication, and is more applicable to communication between naval warships, wireless communication on decks of big warships and wireless sensor network, so ultraviolet communication technology has attracted widespread attention in the world. The basic theory of UV NLOS single-scattering propagation model and the propagation characteristic of UV in the low space atmosphere are analyzed. The structure and principle of UV system, performances of UV sources, detectors and filters are introduced in detail. The whole design scheme based on low pressure mercury lamp for UV communication experimental device is provided, which can implement voice and data communication. The hardware design of the UV data and voice communication experimental device is elaborated. The transmitter mainly based on the IR2153 chip is designed, which include high voltage modulation drive of UV source, frequency modulation of data and voice. The receiver based on the XR2211 chip is designed, which can implement frequency demodulation of data and voice. Bit error rate (BER) test bed for UV data communication experimental device is set up. Under NLOS UV communication links, when the communication distance of UV data communication experimental device is 18m, the bit rate of 1200bit/s and BER of 2.2 can be achieved; when the communication distance is 24m, the voice signal transmitted by UV voice communication experimental device can still be discerned although there is a lot of noise. The performance of the UV data and voice communication experimental device is tested under different conditions, and the influence of the change of communication distance and receiving elevation to the experimental device performance under NLOS UV communication links as an emphasis was studied and analyzed. NLOS UV communication experiment based on UV LED was carried out and the possibility of UV LED’s application in the NLOS UV communication links was validated. A short-range NLOS UV communication scheme based on solar-blind UV LED was brought forward.
语种	中文
内容类型	学位论文
源URL	[http://ir.siom.ac.cn/handle/181231/16455]
专题	上海光学精密机械研究所_学位论文
推荐引用方式 GB/T 7714	熊飞. 紫外光散射通信系统技术的研究[D]. 中国科学院上海光学精密机械研究所. 2007.

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