物理学报2012，Vol.61Issue(6)：329-335,7.
基于单矢量有源平均声强器的码分多址水声通信
Code divided multiple access underwater acoustic communication based on active acoustic intensity average
摘要
Abstract
Code divided multiple access（CDMA） underwater communication based on single vector sensor is studied in this paper.The most common methods to estimate azimuth with self-directivity of single vector sensor are average sound intensity method and complex sound intensity method,however,for the same frequency band multi-users,these methods are limited to the measurement of azimuths only for two users at the same time theoretically.An active average intensity method,which measures the azimuths of multi-users simultaneously with the excellent correlative characteristics of pseudo-random code in spread spectrum communication,is proposed in this paper.With the estimated azimuth,vector combination can be generated to adjust the directivity of vector sensor,achieve multi-user beam communication,inhibit multi-path interference,and enhance processing gain and lower error rate.Simulation and experiment for same frequency band spread spectrum multi-user communication testify the feasibility and utility of active average sound intensity method.关键词
水声通信/码分多址/单矢量传感器/有源平均声强器Key words
underwater acoustic communication/CDMA/single vector sensor/active acoustic intensity average分类
信息技术与安全科学引用本文复制引用
殷敬伟,杨森,杜鹏宇,余赟,陈阳..基于单矢量有源平均声强器的码分多址水声通信[J].物理学报,2012,61(6):329-335,7.基金项目
国家自然科学基金 （）
高等学校博士学科点专项科研基金 （）
海洋工程国家重点实验室基金（批准号：1007）资助的课题 （）
