水下无人系统学报2026，Vol.34Issue(4)：605-615,11.DOI:10.11993/j.issn.2096-3920.2025-0159
深水海管铺设监测新模式及UWOC关键技术研究
New Monitoring Mode for Deepwater Subsea Pipeline Laying and Key Underwater Wireless Optical Communication Technologies
摘要
Abstract
An integrated cable-free monitoring architecture comprising an unmanned surface vehicle(USV),a tether management system(TMS),and an autonomous/remotely operated vehicle(ARV)was developed to break through the bottlenecks of traditional wired monitoring for touchdown points(TDPs)during deepwater subsea pipeline laying,including high operation cost,complicated multi-vessel coordination and poor real-time performance.Meanwhile,an underwater wireless optical communication(UWOC)scheme applicable to deepwater vertical links was proposed.Considering the stratified variation of optical parameters with water depth in heterogeneous deepwater channels,a vertical channel model coupling wavelength and depth was built.The Monte Carlo photon tracing method with the Henyey-Greenstein(HG)phase function was adopted to replace the traditional constant transmittance approximation and thus realize accurate mapping from physical characteristics to engineering parameters.In terms of system implementation,the hardware integrates blue-green LED array with secondary light distribution and large-aperture photomultiplier tubes(PMTs),forming a highly redundant architecture of wide-angle transmission and wide field-of-view reception.At the software level,sliding window statistics-based adaptive threshold and automatic gain control were introduced to achieve dynamic coordination between transmit power and reception sensitivity,thus greatly reducing the system's reliance on high-precision alignment.Tank tests verify the alignment tolerance and stability of the system at rates ranging from 6 Mbit/s to 20 Mbit/s.Offshore sea trials achieved stable communication over a link distance of up to approximately 17 m and error-free video backhaul at the rate of 6.25 Mbit/s,which validates the engineering robustness of the system under dynamic platform disturbance and ambient light fluctuations.It is confirmed that the proposed scheme possesses favorable field transferability.It can support continuous TDP monitoring without additional multi-purpose support vessels(MSVs),providing a reliable technical route for intelligent and lightweight operations of deepwater oil and gas equipment.关键词
深水海管铺设/水下无线光通信/着泥点监测/蒙特卡洛光子追迹/准全向LED阵列Key words
deepwater subsea pipeline laying/underwater wireless optical communication/touchdown point monitoring/Monte Carlo photon tracing/quasi-omnidirectional LED array分类
军事科技引用本文复制引用
李子青,何宁,陈建义,魏佳广,冯晓伟,贺文选,廖佩璇,谢琛华..深水海管铺设监测新模式及UWOC关键技术研究[J].水下无人系统学报,2026,34(4):605-615,11.基金项目
国家科技重大专项项目资助(2024ZD14033). （2024ZD14033）
