利用GPS-MR技术监测石浦港潮位的研究分析

Monitoring the Tidal Level Changes in the Shipu Port by GPS-MR Technology

目前基于GNSS-MR技术开展中国沿海区域潮位变化监测实验研究较少,本文利用浙江省宁波市象山县石浦镇石浦港验潮室屋顶的GPS测站数据开展了潮位变化研究分析工作。选取来自海面反射的石浦站GPS有效卫星数据,采用GPS-MR反演潮位算法处理,获取得到石浦站的潮位变化,并与石浦港验潮站实测潮位数据进行对比分析。实验结果显示2010年第345天的GPS潮位数据与石浦港验潮站实测潮位数据之间的偏差均值为0.167 m,相关系数为0.99;2010-06两者偏差均值为0.231 m,相关系数为0.97;2010年全年两者偏差均值为0.238 m,相关系数为0.97。实验结果表明已有的石浦港GPS站存档数据可用于水位提取,且采用GPS-MR技术获取的潮位变化与验潮站具有较好的一致性和连续性。研究结果为充分利用国内沿海GNSS监测站开展潮位监测提供参考。

There are few studies of GNSS-MR for tidal level monitoring in China’s coastal areas.This paper uses the GPS station on the roof of the Shipu Port tidal gauge in Zhejiang Province to extract and analyze the tidal level changes.The selected GPS signals from the sea surface reflection was processed with the GPS-MR inversion algorithm.We compared the tidal level changes of Shipu station by GPS-MR with the situ tidal gauge measurements.The results showed that the mean deviations and the correlation coefficients between the GPS-MR and tidal gauge,were 0.167 m and 0.99,0.231 m and 0.97,0.238 m and 0.97,for the 345 th day,June,and the whole year of 2010,respectively.The above good consistency indicated that the archived data of Shipu Port GPS station could be used for water level extraction,and provided a reference for making full use of the coastal GNSS monitoring stations in China to carry out tidal level monitoring.