面向小型水下无人平台的移动水声通信系统

姚俊辉; 赵燕锋; 童峰; 陈东升; 上官明禹

doi:10.11993/j.issn.2096-3920.2022-0029

面向小型水下无人平台的移动水声通信系统

doi: 10.11993/j.issn.2096-3920.2022-0029

姚俊辉^{1, 2, 3,},
赵燕锋^{1, 2},
童峰^{1, 2, 3,},
陈东升^{1, 2},
上官明禹⁴

1.
厦门大学海洋与地球学院, 福建厦门, 361005
2.
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
3.
厦门大学人工智能研究院, 福建厦门, 361005
4.
福州大禹电子科技有限公司, 福建福州, 350001

基金项目: 国家重点研发计划项目(2018YFE0110000); 上海市科委“科技创新行动计划”项目(21DZ1205502)

详细信息

作者简介:
姚俊辉(1998-), 男, 在读硕士, 主要研究方向为水声通信

通讯作者:
童峰(1973-), 男, 教授, 博导, 主要研究方向为水声通信与网络

中图分类号: TJ630.34; U666.7
计量
- 文章访问数: 333
- HTML全文浏览量: 88
- PDF下载量: 66
- 被引次数: 0
出版历程
- 收稿日期: 2022-07-31
- 修回日期: 2022-09-13
- 录用日期: 2022-09-27
- 网络出版日期: 2022-11-08

Mobile Underwater Acoustic Communication System for Small Underwater Unmanned Platform

YAO Jun-hui^{1, 2, 3
,},
ZHAO Yan-feng^{1, 2},
TONG Feng^{1, 2, 3
,},
CHEN Dong-sheng^{1, 2},
SHANGGUAN Ming-yu⁴

1.
College of Ocean & Earth Sciences, Xiamen University, Xiamen 361005, China
2.
National and Local Joint Engineering Research Center for Navigation and Location Service Technology, Xiamen University, Xiamen 361005, China
3.
Institute of Artificial Intelligence, Xiamen University, Xiamen 361005, China
4.
Fuzhou Dayu Electronic Technology Co., LTD., Fuzhou 350001, China

摘要

摘要: 移动水声通信信道具有典型的多径、多普勒双重扩展特征, 严重影响通信性能。特别是用于水下特战等领域的小型水下无人平台装备, 具有航行状态多变、多浅海应用、受限功耗下发射功率低等特点, 导致多普勒变化、多径严重、信噪比低, 对传统移动水声通信方案造成极大挑战。文中提出了一种面向特战领域小型水下无人平台的移动水声通信方案, 该方案通过直接数字频率合成器芯片, 调整系统模拟/数字转换采样率, 从而在硬件上实现实时多普勒补偿; 结合直接扩频序列调制, 提高低信噪比条件下的抗多径性能; 采用双曲调频同步设计保证同步捕获性能。半实物仿真实验结果验证了该系统的有效性。
- 移动水声通信 /
- 多普勒补偿 /
- 信噪比 /
- 双曲调频
Abstract: Mobile underwater acoustic communication channels have the typical characteristics of multipath and Doppler dual expansion, which seriously affects communication performance. In particular, the equipment of small underwater unmanned platforms in the field of underwater special operation has the characteristics of variable navigation state, multi-shallow sea application, and low transmission power under limited power consumption, resulting in variable Doppler, serious multi-path, and low signal-to-noise ratio (SNR), which poses great challenges to traditional mobile underwater acoustic communication schemes. In this study, a mobile underwater acoustic communication scheme for small underwater unmanned platforms in a special operation field is proposed. In this scheme, the analog/digital conversion sampling rate is adjusted by a direct digital frequency synthesizer chip, and real-time Doppler compensation is realized in the hardware. Combined with direct spread spectrum sequence modulation, the anti-multipath performance is improved under the condition of low SNR. A hyperbolic frequency-modulation synchronization design was used to ensure synchronization acquisition performance. The results of the hardware-in-the-loop simulation demonstrated the effectiveness of the system.
- mobile underwater acoustic communication /
- Doppler compensation /
- signal-noise-ratio /
- hyperbolic frequency modulation

HTML全文

图 1 发射信号帧格式

Figure 1. Frame format of transmit signal

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图 2 DS-QDPSK系统流程

Figure 2. System process of DS-QDPSK

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图 3 HFM信号时频图

Figure 3. Time-frequency diagram of HFM signal

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图 4 多普勒估计与补偿流程

Figure 4. Doppler estimation and compensation process

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图 5 水声信道仿真模型

Figure 5. Simulation model of underwater acoustic channel

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图 6 BELLHOP多径信道仿真

Figure 6. Multipath channel simulation of BELLHOP

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图 7 信道单位冲激响应

Figure 7. Impulse response of channel

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图 8 半实物仿真实验流程

Figure 8. Flow of hardware-in-the-loop simulation experiment

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图 9 多普勒估计结果

Figure 9. Doppler estimation results

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图 10 半实物仿真误比特率结果

Figure 10. Bit error rate results of hardware-in-the-loop si- mulation

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参考文献(12)

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