基于AD变采样抑制多普勒的移动水声通信系统

王小阳; 郑思远; 李 斌; 童 峰

doi:10.11993/j.issn.2096-3920.2018.05.014

基于AD变采样抑制多普勒的移动水声通信系统

doi: 10.11993/j.issn.2096-3920.2018.05.014

厦门大学水声通信与海洋信息技术教育部重点实验室, 福建厦门, 361005

基金项目: 国家自然科学基金项目资助(11574258)

详细信息

作者简介:
王小阳(1993-), 男, 在读硕士, 主要研究方向为水声通信.

中图分类号: TJ630.34; TN929.3
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- 文章访问数: 525
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- 被引次数: 0
出版历程
- 收稿日期: 2018-07-30
- 修回日期: 2018-09-10
- 刊出日期: 2018-10-31

Mobile Underwater Acoustic Communication System Based on AD Variable Sampling

Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Ministry of Education, College of Ocean & Earth Sciences, Xiamen University, Xiamen 361005, China

摘要

摘要: 针对自主式水下航行器(AUV)等水下移动平台移动水声通信中的多普勒问题, 考虑到传统的软件变采样多普勒校正方法需要先接受完整的一帧信号, 并在多普勒估计后对信号进行重采样, 运算复杂度较高, 硬件实现较难。文中提出了基于模数转换(AD)变采样抑制多普勒的AUV移动通信方案, 在信号的前段做多普勒估计, 而后通过微控制单元(MCU)调整AD采样率接收信号, 相当于直接对信号做多普勒补偿。根据该方案所设计的水声通信系统能够实时通信, 并且改善了通信质量; 同时采用直接扩展频谱技术和信道编码, 进一步提高了通信性能, 海试验证了该方法的有效性。
- 自主式水下航行器(AUV) /
- 移动水声通信 /
- 多普勒补偿 /
- AD变采样
Abstract: For the Doppler problem in mobile underwater acoustic communication of underwater mobile platforms such as autonomous undersea vehicle(AUV), the traditional software variable sampling Doppler correction method needs to accept one complete frame signal at first, and the signal is resampled after Doppler estimation, so it has high computational complexity and is difficult to implement in hardware. In this paper, an AUV mobile communication scheme based on analog-to-digital(AD) variable sampling suppression Doppler is proposed. The Doppler estimation is performed in the front part of the signal, then the AD sampling rate is adjusted by the microcontroller unit(MCU) to receive the signal, which is equivalent to Doppler compensation directly to the signal. The underwater acoustic communication system designed according to the scheme can communicate in real time and improve the communication quality. Simultaneously, adopting the direct spread spectrum technology and channel coding helps further improve communication performance of the system. Sea trial verifies the effectiveness of the proposed scheme.
- autonomous undersea vehicle(AUV) /
- mobile underwater acoustic communication /
- Doppler compensation /
- AD variable sampling

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参考文献(12)

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