基于激光通信技术通信速度快抗电磁干扰能力强等特点，提出一种适用水下航行器内部通信的激光通信系统。该系统采用二进制开关键控方法进行调制解调，通过成形滤波、8B10B编码等方式改善系统的误码性能。在自适应判决的基础上引入相关性分析修正对判决数据进行修正，进一步降低系统误码率。仿真验证结果表明在通信速率为1 Mb/s、信噪比为15 dB的情况下，上述方法能够将通信系统的误码率由10-3降低至10-5以下。研究结果对于提升水下无人航行器无缆化水平和可靠性具有重要的现实意义。
Based on the characteristics of laser communication technology such as fast communication speed and strong resistance to electromagnetic interference, a laser communication system applicable to the internal communication of underwater vehicles is proposed. The system adopts the binary switch keying method for modulation and demodulation, and improves the BER performance of the system through forming filtering and 8B10B coding. Correlation analysis correction is introduced on the basis of adaptive judgement to correct the judgement data to further reduce the system BER. The simulation verification results show that the above method can reduce the BER of the communication system from 10-3 to below 10-5 under the communication rate of 1 Mb/s, the signal-to-noise ratio of 15 dB. The research results are of great practical significance for enhancing the cable-free level and reliability of unmanned underwater vehicles.
2025,47(12): 146-151 收稿日期：2024-12-2
DOI：10.3404/j.issn.1672-7649.2025.12.026
分类号：U665.2
作者简介：杨令龙(2000-),男,硕士研究生,研究方向为水下航行器光通信技术
参考文献：
[1] 柯熙政, 邓莉君, 著. 无线光通信[M]. 北京: 科学出版社, 2016.
[2] 刘金标, 徐林, 马建军, 等. 舰载激光通信设备设计及试验研究[J]. 舰船科学技术, 2023, 45(10): 127-130.
LIU J B, XU L, MA J J, et al. Design and experimental study of shipborne laser communication equipment[J]. Ship Science and Technology, 2023, 45(10): 127-130.
[3] 刘鹏展, 王林宁, 胡芳仁, 等. 水下光通信技术的研究与展望[J]. 数字海洋与水下攻防, 2022, 5(4): 329-334.
[4] 黄安, 殷洪玺, 季秀阳, 等. 基于现场可编程门阵列和大功率LED阵列光源的小型化水下无线光通信系统的研究与实现[J]. 光学学报, 2024, 44(6): 226-236.
[5] 潘进, 王凯国, 亢凯, 等. 鱼雷供电系统电磁兼容性研究与设计[J]. 水下无人系统学报, 2020, 28(4): 450-460.
[6] 龚从安, 胡芳仁, 赵晓燕, 等. 基于OOK调制的水下高速激光通信系统设计与实现[J]. 光通信技术, 2023, 47(1): 13-16.
[7] KAZUHIRO T, KENTA U, NIZAR Z . Adaptive threshold setting for OOK modulation with a prefix code in THz band[J]. IEICE Communications Express, 2022, 11(3): 117-122.
[8] 王许浦, 孙晓红, 薛琦. 基于FPGA的OOK可见光通信系统仿真与实现[J]. 现代电子技术, 2020, 43(17): 25-28+33
[9] ANDREA C, J M F, ERNESTO C, et al. Effective homodyne optical phase locking to PSK signal by means of 8b10b line coding. [J]. Optics Express, 2011, 19(3): 1707-1712.
[10] 梁静远, 陈明惠, 王惠琴, 等. 无线光通信自适应阈值检测技术研究进展[J]. 电子测量与仪器学报, 2023, 37(7): 1-16.
[11] 郭立民, 于致博. 一种基于动态门限与LMS算法相结合的多径干扰抑制算法[J]. 舰船电子对抗, 2024, 47(2): 52-56+92.
[12] 王磊, 郝士琦, 张岱, 等. 大气激光通信中自适应调制编码技术的模式选择阈值[J]. 激光与光电子学进展, 2017, 54(2): 117-123.
[13] 樊庭冰, 涂俊轩, 庄济舟, 等. 基于OOK调制的可见光通信视频传输系统[J]. 光通信技术, 2024, 48(3): 84-88.
