Page 96 - 《应用声学》2024年第6期
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第 43 卷 第 6 期 Vol. 43, No. 6
2024 年 11 月 Journal of Applied Acoustics November, 2024
⋄ 研究报告 ⋄
扫扩载波-直接序列扩频深海水声通信方法 ∗
彭海源 1,2 李 宇 1† 普湛清 1 王 巍 1
(1 中国科学院声学研究所 先进水下信息技术重点实验室 北京 100190)
(2 中国科学院大学 北京 100049)
摘要:针对深海水声信道长多径时延条件下,常规直接序列扩频 (DSSS) 水声通信系统扩频增益不足以抵抗
多径干扰从而引起性能下降的问题,该文结合扫扩载波 (S2C) 技术,提出一种应用于深海水声通信的扫扩载
波 -直接序列扩频 (S2C-DSSS) 通信方法,并在深海实测信道下进行了仿真。结果显示,相较于常规 DSSS 系
统,该文提出的 S2C-DSSS 系统仿真误比特率可下降 1∼3 个数量级。结果证明,S2C-DSSS 系统具有较好的抗
多径性能,适用于深海水声信道。
关键词:深海水声通信;长多径时延;直接序列扩频;扫扩载波
中图法分类号: TN929.3 文献标识码: A 文章编号: 1000-310X(2024)06-1272-11
DOI: 10.11684/j.issn.1000-310X.2024.06.010
Deep sea underwater acoustic communication method based on sweep spread
carrier-direct sequence spread spectrum
PENG Haiyuan 1,2 LI Yu 1 PU Zhanqing 1 WANG Wei 1
(1 Key Laboratory of Science and Technology on Advanced Underwater Acoustic Signal Processing, Institute of Acoustics,
Chinese Academy of Sciences, Beijing 100190, China)
(2 University of Chinese Academy of Sciences, Beijing 100049, China)
Abstract: Aiming at the problem that the spread spectrum gain of conventional direct sequence spread
spectrum (DSSS) underwater acoustic communication system is insufficient to resist multipath interference
under the condition of long multipath delay in deep sea underwater acoustic channel, combining sweep spread
carrier (S2C) technology, this paper presents a sweep spread carrier-direct sequence spread spectrum (S2C-
DSSS) communication method for deep sea underwater acoustic communication. The simulation is carried out
in the actual measured deep-sea channel. The results show that, compared to the conventional DSSS system,
the simulation bit error rate of the S2C-DSSS system proposed in this paper can be reduced by 1 to 3 orders of
magnitude. The results prove that the S2C-DSSS system has good anti-multipath performance and is suitable
for deep-sea acoustic channels.
Keywords: Deep sea underwater acoustic communication; Long multipath time-delay; Direct sequence spread
spectrum; Sweep spread carrier
2023-08-02 收稿; 2023-11-03 定稿
中国科学院重点实验室基金项目 (1110300001)
∗
作者简介: 彭海源 (1998– ), 男, 山东临沂人, 博士研究生, 研究方向: 信号与信息处理。
† 通信作者 E-mail: ly@mail.ioa.ac.cn