一种PPM调制近距高速率低复杂度水声通信方案  

A short-distance high-data-rate low-complexity PPM modulation underwater acoustic communication method

作　　者：杨义军 魏博文 童峰[2,3] 陈东升[2,3] 兰维瑶[1] YANG Yijun;WEI Bowen;TONG Feng;CHEN Dongsheng;LAN Weiyao(School of Aerospace Engineering,Xiamen University,Xiamen 361005,China;College of Ocean and Earth Sciences,Xiamen University,Xiamen 361005,China;National and Local Joint Engineering Research Center for Navigation and Location Service Technology,Xiamen University,Xiamen 361005,China)

机构地区：[1]厦门大学航空航天学院,福建厦门361005 [2]厦门大学海洋与地球学院,福建厦门361005 [3]厦门大学导航与位置服务技术国家地方联合工程研究中心,福建厦门361005

出　　处：《舰船科学技术》2025年第3期129-134,共6页Ship Science and Technology

基　　金：上海市科委“科技创新行动计划”项目(21DZ1205502)。

摘　　要：针对小型水下无人平台等水下设备对近距、高速率、低复杂度水下数据交互需求,设计一种高速率低复杂度水声通信方案。该方案采用PPM(Pulse Position Modulation)调制方式以直接硬件生成四相位时钟同步采样的方式实现低复杂度解调,从而降低对硬件算力的要求;同时,利用PPM调制中脉冲间隔形成的特点和脉冲信号的快速衰减特性抑制高频水声信道多径干扰,避免采用高复杂度的信道均衡处理。实验室水池实验表明了采用该方案的通信样机在米级距离达到Mbps级传输速率的有效性。To meet the needs of short-range,high-speed and low-complexity underwater data transmission in small un-derwater unmanned platform,we design a low-complexity and high-data-rate underwater acoustic communication method.This method adopts pulse position modulation,which is common in optical communication.In order to low complexity de-modulate,we use hardware to direct generate four-phase clock for synchronous sampling,this method greatly reduce the re-quirements for hardware.Utilize the pulse interval in PPM modulation and the fast attenuation characteristics of pulse signal to suppress multipath interference in high-frequency underwater acoustic channel,and avoid to use high-complexity channel equalization processing.The experiment proves that the maximum data rate of the communicator using the method in this pa-per can reach Mbps at the distance of m level.

关 键 词：水声通信 脉冲位置调制 高速率 低复杂度 

分 类 号：TJ630.34[兵器科学与技术—武器系统与运用工程] TN929.3[电子电信—通信与信息系统]