摘要
海潮负荷是影响陆态网络基准站坐标的重要因素。本文在介绍海潮负荷位移改正理论的基础上，对海潮负荷改正的计算方法、海潮负荷对陆态网基准站坐标的影响趋势与影响量级以及不同方法、不同的海潮模型计算结果进行了比较和分析。计算结果表明，海潮负荷对沿海地区基准站位移影响较大，内陆地区影响较小，对径向的影响大于水平方向，径向最大位移改正达到4cm；网站在线计算和SPOTL软件计算的主要分潮振幅一致，但相位相差较大；不同模型计算的振幅差异较小，但是相位有一定的差异。
OTL（ Ocean Tide Loading） is a main factor that influence the coordinate calculation of CMONOC stations. Based on the introduction of OTL displacement correction theory and formulas, the influence trend and magnitude of OTL on the coordi- nate of CMONOC stations are calculated, and the differences between two calculation methods and several ocean tide models are compared and analyzed. The results show that the influence on inshore stations of OTL is greater than that of inland stations, and the influence on radial direction with a maximum value up to 4cm is greater than that on horizontal direction. The partial tide amplitude calculation results of Internet online and SPOTL software are consistent, while the phases are distinctly different. In contrast, the partial tide amplitude differences of various ocean tide models are slight, but the phases are different to some extent.
出处
《测绘科学与工程》
2016年第1期1-6,共6页
Geomatics Science and Engineering
基金
国家自然科学基金资助项目（41374003,41174018,41474016）,国家863计划资助项目（2013AA122501）.
