对于在移动水下声通信中具有低复杂度和高分辨率的M-ary扩散频谱信号的多普勒补偿技术
Yubo Han1, Shuping Han1, YaoHui Hu1
1Naval Submarine Academy, Qingdao 266199, China.
The Journal of the Acoustical Society of America
|February 13, 2026
概括
这项研究引入了一种用于水下通信的新多普勒估计方法,在具有挑战性的移动条件下提高了准确性和效率. 新技术增强了频率偏移补偿,这对于可靠的扩散频谱系统至关重要.
科学领域:
- 水下声学 水下声学
- 信号处理 信号处理
- 移动通信系统 移动通信系统
背景情况:
- 在水下移动扩散频谱通信中,时间变化的多普勒效应会导致载波阶段跳跃,降低性能.
- 传统的多普勒补偿技术在较高的相对速度和动态环境下扎.
研究的目的:
- 提出一种高分辨率多普勒估计方法 (HCCF-MSS) 以有效的频率偏移补偿.
- 为了提高多普勒估计的准确性和计算效率在水下移动通信.
- 在动态的水下环境中解决现有方法的局限性.
主要方法:
- 研究了相关性成本因子 (CCF) 作为频率偏移补偿损失函数.
- 开发了高分辨率多普勒估计方法 (HCCF-MSS),使用亚当优化器实现快速收.
- 引入了多起点并行梯度搜索 (MPGS) 算法,以避免局部最小值.
主要成果:
- HCCF-MSS表现出与现有方法可比的性能,具有更高的计算效率.
- HCCF-MSS-9的性能与CCF-MSS-0.02 (±6 Hz范围,0.02 Hz精度) 相似.
- 在加速下,HCCF-MSS-9+MPGS-6实现了多普勒估计平均平方误差约为-3.3dB,优于其他算法.
结论:
- 由MPGS增强的拟议的HCCF-MSS方法,为水下移动通信提供了有效和精确的频率偏移估计.
- 该技术在复杂的可变运动条件下显示出显著的优势,提高了扩散频谱系统的可靠性.
- 这项研究为多普勒补偿在具有挑战性的水下环境中提供了计算效率高的解决方案.
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