基于WT600F的超短波语音通信系统  

Voice Communication System of Ultra-Short Wave Radio Station based on WT600F

作　　者：李敏 吴凡[1] 陈启贵 何敏 LI Min;WU Fan;CHEN Qi-gui;HE Min(Jiangsu Aerospace Shen He Technology Co.,Ltd.,Nanjing Jiangsu 210046,China;Nanjing University of Science and Technology,Nanjing Jiangsu 210094,China)

机构地区：[1]江苏航天神禾科技有限公司,江苏南京210046 [2]南京理工大学,江苏南京210094

出　　处：《通信技术》2019年第5期1268-1272,共5页Communications Technology

摘　　要：随着通信距离的增加,通信系统的接收灵敏度和传输速率会随之下降,如何在保证通信质量的前提下增加通信距离是超短波电台研究的重点。为了实现远距离的超短波电台语音通信,该系统采用了低速率声码器芯片WT600F对语音信号进行编码和解码,利用TLV320AIC23B芯片对模拟和数字信号进行采样转换。实验结果表明,WT600F声码器可以在600bit/s的速率下合成出较高质量的语音。采用WT600F声码器设计的超短波语音通信系统,接收灵敏度可达-130dBm,在陆地能够实现距离超过120km的数字语音通信。As the communication distance increases, the receiving sensitivity and transmission rate of the communication system would decrease accordingly. How to increase the communication distance under the premise of ensuring communication quality is the focus of VHF radio research. In order to realize longdistance voice communication of VHF station, the system uses a low-rate vocoder chip WT600F to encode and decode the voice signal, and the TLV320AIC23B chip to sample and convert the analog and digital signals. Experimental results indicate that the WT600F vocoder can synthesize fairly high quality speech at 600 bit/s. The VHF voice communication system designed with WT600F vocoder has a receiving sensitivity of -130 dBm and can realize digital voice communication with a distance of more than 120 km on land.

关 键 词：超短波 WT600F TLV320AIC23B 数字语音通信 

分 类 号：TN919[电子电信—通信与信息系统]