本文研究一种舰船自组织通信网络多普勒频偏实时补偿算法。该算法利用频域变采样方法计算多普勒频偏的实时粗补偿因子，实现对频偏的初步校正；双导频信号技术利用粗补偿后舰载信号的信道矩阵特征，分离主径分量，剔除多径干扰，实时估计多普勒频偏值，抑制多径引发的频偏扩展；多普勒频偏补偿算法依据频偏值，计算精细频偏补偿系数，实时补偿多普勒频偏。实验证明，该算法可有效估计舰船自组织通信网络多普勒频偏值，其估计值的最小可决系数约为0.93，表明估计精度较高；经过该算法实时补偿后的舰载信号数字通信星座图明显收敛，即多普勒频偏实时补偿效果较优。
This paper studies a real-time Doppler frequency offset compensation algorithm for ship self-organizing communication networks. This algorithm uses the frequency-domain variable sampling method to calculate the real-time coarse compensation factor of Doppler frequency offset, achieving the preliminary correction of frequency offset. The dual-pilot signal technology utilizes the channel matrix characteristics of the shipborne signal after coarse compensation to separate the principal path components, eliminate multipath interference, estimate the Doppler frequency offset value in real time, and suppress the frequency offset spread caused by multipath. The Doppler frequency offset compensation algorithm calculates the fine frequency offset compensation coefficient based on the frequency offset value to compensate for the Doppler frequency offset in real time. Experiments prove that this algorithm can effectively estimate the Doppler frequency offset value of the ship's self-organizing communication network. The minimum determinability coefficient of its estimated value is approximately 0.93, indicating a high estimation accuracy. The digital communication constellation diagram of the shipborne signal after real-time compensation by this algorithm converges significantly, that is, the real-time compensation effect of Doppler frequency offset is better.
2026,48(3): 196-200 收稿日期：2025-11-3
DOI：10.3404/j.issn.1672-7649.2026.03.031
分类号：U675.75；TP391
作者简介：方平(1984-),男,讲师,研究方向为电子信息与信号处理
参考文献：
[1] 赵建森, 谭智豪, 段海燕, 等. 基于奇异谱和稳健独立分量分析的星载AIS接收信号分离算法[J]. 中国舰船研究, 2024, 19(6): 293-302.
ZHAO J S, TAN Z H, DUAN H Y, et al. A separation algorithm for satellite-based AIS received signals based on SSA and RobustICA[J]. Chinese Journal of Ship Research, 2024, 19(6): 293-302.
[2] 胡欣珏, 李麒, 刘佳仑, 等. 船舶远程驾控卫星-岸基集成网络技术研究现状及展望[J]. 中国舰船研究, 2025, 20(1): 15-24.
HU X J, LI Q, LIU J L, et al. Research status and prospects of satellite-shore-based integrated network technology for remotely-controlled ships[J]. Chinese Journal of Ship Research, 2025, 20(1): 15-24.
[3] 杨永嘉, 冯海泓, 李记龙, 等. OFDM水声通信多普勒估计与跟踪方法[J]. 声学技术, 2024, 43(3): 403-411.
YANG Y J, FENG H H, LI J L, et al. Doppler estimation and tracking method for OFDM underwater acoustic communication[J]. Technical Acoustics, 2024, 43(3): 403-411.
[4] 李渝舟, 黄运龙, 桂正泰, 等. PC-FFT: 一种时频协同的差分水声OFDM信号ICI抑制方法[J]. 信号处理, 2023, 39(10): 1842-1856.
LI Y Z, HUANG Y L, GUI Z T, et al. PC-FFT: A time-frequency-cooperative ici mitigation method for differential underwater acoustic OFDM signals[J]. Journal of Signal Processing, 2023, 39(10): 1842-1856.
[5] 刘垚圻, 李红光, 石晶林, 等. 基于混合预测的低轨卫星多普勒频偏预补偿[J]. 高技术通讯, 2023, 33(6): 559-567.
LIU Y Q, LI H G, SHI J L, et al. Doppler frequency offset pre-compensation algorithm based on mixed forcast for LEO satellite communications[J]. Chinese High Technology Letters, 2023, 33(6): 559-567.
[6] 陆俊宇, 李钰. 基于立方Farrow结构的插值细搜频偏估计算法[J]. 华东理工大学学报(自然科学版), 2024, 50(1): 121-128.
LU J Y, LI Y. Frequency offset estimation algorithm of interpolation detail search based on cubic farrow structure[J]. Journal of East China University of Science and Technology(Natural Science Edition), 2024, 50(1): 121-128.
[7] 林海涛, 肖丹妮, 王斌. 基于VIKOR的多网并行传输选网算法[J]. 海军工程大学学报, 2024, 36(3): 83-88.
LIN H T, XIAO D N, WANG B. Research on network selection algorithm of multi-network parallel transmission based on VIKOR[J]. Journal of Naval University of Engineering, 2024, 36(3): 83-88.
[8] 王晓玮, 周其斗, 唐永壮, 等. 短周期PN序列水声直扩系统抗单频干扰能力的变化规律与试验验证[J]. 海军工程大学学报, 2024, 36(2): 43-49.
WANG X W, ZHOU Q D, TANG Y Z, et al. Variation law and experimental verification of anti-single-frequency interference ability of underwater acoustic DSSS system with short-period PN sequences[J]. Journal of Naval University of Engineering, 2024, 36(2): 43-49.
