海底大地基准站维护方法研究进展OA

Aiming at the development trend toward wide-area construction of marine positioning,navigation,and timing(PNT)networks,and addressing the urgent need for observing and maintaining seafloor geodetic stations,the current status of seafloor geodetic station construction both domestically and internationally is reviewed.Meth-ods for maintaining and applying these stations are systematically summarized.Approaches for assessing the stabil-ity of seafloor geodetic stations are analyzed.Various methods for replacing seafloor geodetic stations are orga-nized,including constructing permanent seabed foundations,performing acoustic joint surveys between old and new stations,and integrating acoustic and optical technologies.A series of functional models for station replace-ment through acoustic joint measurements are established.Potential future directions for the observation and main-tenance of seafloor geodetic stations are explored,and key measures for multi-technology integration and collabora-tive construction with an integrated PNT system are proposed.Systematic technical solutions and theoretical basis are provided for the long-term stable operation and maintenance of seafloor geodetic stations,which are of signifi-cant reference value for advancing the construction of marine PNT systems.