声学学报

1999, (06) 561-573

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Pattern──时延差编码水声通信研究
A study on pattern time delay coding underwater acoustic communocation

惠俊英,刘丽,刘宏,冯海泓

摘要:

研究了沿水平方向的高速数字水声通信技术,称之为Pattern──时延差编码水声通信系统(PDS)。PDS系统是为改善浅海中的通信质量,通过进行PDS水声通信的计算机仿真和湖上试验表明,在2kHz带宽内通信速率可达到300bit/s,误码率在10(-4)的量级。详细介绍有关PDS技术,包括PDS编码原理,通信模型,时延估计,抗多途干扰,PDS通信系统仿真及试验结果。

关键词:

Abstract: The high rate digital acoustic communication technique for horizontal channels has beenstudied in this article. It is called as "Pattern Time Delay Shift Coding (PDS) communication system".The aim of the PDS is to improve the quality of communication in shallow water. The open waterexperiments show that at the condition of 2 kHz bandwidth, the communication rate is more than 300bit/sand error rate is at the level of 10--4. The details of PDS technique will be shown, including: principleof PDS coding, the model of communication, time delay estimation, simulation of PDS communication,Anti-multipath interference and open water experiments.

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