一种数话同传的激光通信系统的实现  

Laser simultaneous communication system for data and audio

作　　者：毕博瑞[1] 陈胜石[1] 侯风乾[1] 薛常佳[1] 张晓辉[1] 李军芳[1] 

机构地区：[1]西安应用光学研究所,陕西西安710065

出　　处：《应用光学》2011年第6期1291-1294,共4页Journal of Applied Optics

摘　　要：针对传统通信模式易被干扰和保密性差的缺点,设计了一种可以同时传送语音和数据的无线激光通信系统。在保证语音不失真的前提下,采用AMBE语音压缩算法,将语音压缩到4 800bit/s的数据率,和数据混合编码后驱动激光器发光;接收端接收激光后经光电转换、解码处理将语音和数据还原,通过2.5km的通信试验,表明该系统具有传输距离远、语音清晰、数据稳定的特点,在未来的空对空、空对地、地对空、地对地通信中将得到广泛的应用。To overcome the shortcomings of traditional communication systems which were easily disturbed and weakly encrypted,a laser communication system which could transfer audio and data simultaneously was designed.The audio was compressed to 4 800 bit/s data rate without distortion by using the advanced multi-band excitation（AMBE） algorithm,then the coding data stream of audio and data drove the laser to emit.Audio and data were recovered after electro-optical conversion and decoding at the receiver.The communication experiment with the distance of 2.5km proves that the system features long distance,clear audio and stable data,it can be applied in air-to-air,air-to-ground,ground-to-air and ground-to-ground communications.

关 键 词：无线激光通信 AMBE 语音 数据 

分 类 号：TN929.1[电子电信—通信与信息系统]