摘要
为了研究海潮负荷对沿海地区定位精度的影响,借助GAMIT/GLOBK软件对60 d HKCORS观测数据进行解算,并对基线解算结果和定位结果进行了分析。实验结果表明,海潮负荷模型会对HKCORS数据基线解算结果产生影响,引入该模型可提高基线解算精度;海潮负荷对GNSS精密定位会产生毫米级甚至厘米级的影响;在N、E、U方向的互差最大值分别为5.71 mm、6.24 mm和16.80 mm,平均值分别为4.02 mm、4.00 mm和9.99 mm;海潮负荷模型对U方向的精度改善最明显,对N、E方向的精度改善相当。
In order to study the influence of sea tide load on the positioning accuracy of coastal areas,we used GAMIT/GLOBK software to calculate the 60 days HKCORS observation data,and analyzed the baseline solution results and positioning results.The experimental results show that the sea tide load model will affect HKCORS data baseline solution results,and the accuracy of baseline solution will be improved after introducing this model.The sea tide load will have millimeter-level or even centimeter-level impact on GNSS precise positioning.The maximum mutual differences in N,E and U directions are 5.71 mm,6.24 mm and 16.80 mm,and the average values are 4.02 mm,4.00 mm and 9.99 mm,respectively.The sea tide load model has significant impact on the U direction.The improvement of U direction accuracy is the most obvious,and the improvements of N and E directions accuracy are the same.
作者
何民华
林新昊
HE Minhua;LIN Xinhao(Guangzhou Maritime Surveying and Mapping Center,Guangzhou 510000,China;Zhongyuan University of Science and Technology,Zhengzhou 450000,China)
出处
《地理空间信息》
2022年第9期95-97,共3页
Geospatial Information
