当前位置：首页 > 过刊浏览->2023年45卷5期
移动水声通信的3种帧同步方法性能分析
Performance analysis of three frame synchronization methods for mobile underwater acoustic communication
- DOI:
- 作者:
- 王中1,2, 陈永兴1, 樊书宏1,2, 岳玲1,2
WANG Zhong1,2, CHEN Yong-xing1, FAN Shu-hong1,2, YUE Ling1,2
- 作者单位:
- 1. 中国船舶集团有限公司 第七〇五研究所，陕西 西安 710077;
2. 水下信息与控制国防重点实验室，陕西 西安 710077
1. The 705 Research Institute of CSSC, Xi′an 710077, China;
2. Science and Technology on Underwater Information and Control Laboratory, Xi′an 710077, China
- 关键词:
- 移动水声通信;帧同步;多普勒效应;多普勒因子估计
mobile underwater acoustic communication; frame synchronization; Doppler effect; Doppler factor estimation
- 摘要:
- 移动水声通信中收发两端的相对运动会导致通信信号出现时间压缩或扩展而产生多普勒效应，较大的多普勒频偏将引起严重的载波频率偏移，影响通信系统性能。通过帧同步进行多普勒因子准确估计与补偿，是实现移动水声通信的重要基础。本文分别研究了利用LFM信号、m序列信号、HFM信号的3种帧同步方法，给出了实现原理，并针对AWGN信道和实测多途衰落信道，分别从信噪比、信道特性、相对多普勒速度、计算复杂度等方面，对比分析了3种方法在不同条件和应用环境的多普勒因子估计性能。仿真结果表明，3种方法各有优势，均可适用不同的移动水声通信应用环境。相对而言，双HFM信号同步方法多普勒估计精度高、数据传输速率快、计算复杂度低、稳健性强，可以实现复杂信道移动水声通信的帧同步。
In mobile underwater acoustic communication, the relative motion of the two ends of the transceiver will cause the time compression or expansion of the communication signal, resulting in the Doppler effect. A large Doppler frequency offset will cause a serious carrier frequency offset and affect the performance of the communication system. Accurate estimation and compensation of Doppler factor through frame synchronization is an important basis for realizing mobile underwater acoustic communication. In this paper, three frame synchronization methods using linear frequency modulated (LFM) signal, m-sequence signal and hyperbolic frequency modulated (HFM) signal are studied respectively, and the realization principle is given. The Doppler factor estimation performance of the three methods under different conditions and application environments was compared and analyzed in terms of speed and computational complexity. The simulation results show that the three methods have their own advantages and can be applied to different application environments of mobile underwater acoustic communication. Relatively speaking, the dual HFM signal synchronization method has high Doppler estimation accuracy, fast data transmission rate, low computational complexity and strong robustness, and can realize frame synchronization of mobile underwater acoustic communication with complex channels.
2023,45(5): 118-123 收稿日期：2022-08-30
DOI：10.3404/j.issn.1672-7649.2023.05.022
分类号：U666
基金项目：军科委基础加强计划项目(2019-JCJQ-ZD-020)
作者简介：王中(1968-),男,研究员,研究方向为鱼雷总体技术
