| ???????º????????????GPS????????? |
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| 引用本文： | 方川,高井祥,王坚,胡洪.???????o????????????GPS?????????[J].大地测量与地球动力学,2014,34(4):135-139. |
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| 作者姓名： | 方川 高井祥 王坚 胡洪 |
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| 作者单位： | 江苏省地质测绘院，南京 210008 |
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| 基金项目： | 国家自然科学基金项目(41074010)；江苏省普通高校研究生科研创新计划项目(CXZZ12_0939)；江苏高校优势学科建设工程项目(SZBF2011-6-B35)。 |
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| 摘 要： | ???й?????????IGS????,??????FES2004????????NAO99b?????????????????????????????????λ?????????????????????????????????λ????????cm??????????????U????????????????????????3~4????????????????????????????????mm????????????????????????С????????????????GPS????????????????10-8??????????????????????????????????С??mm?????????????????????????????1 cm??
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| 关 键 词： | ???????? ??????? ??????? ??????? ????? |
| 收稿时间： | 2013-06-23 |
EFFECT OF OCEAN TIDE LOADING ON HIGH PRECISE GPS
MEASUREMENT BASED ON DIFFERENT MODELS |
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| Fang Chuan,Gao Jingxiang,Wang Jian,Hu Hong.EFFECT OF OCEAN TIDE LOADING ON HIGH PRECISE GPS
MEASUREMENT BASED ON DIFFERENT MODELS[J].Journal of Geodesy and Geodynamics,2014,34(4):135-139. |
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| Authors: | Fang Chuan Gao Jingxiang Wang Jian Hu Hong |
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| Institution: | Jiangsu Geologic Surveying and Mapping Institute,Nanjing 210008 |
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| Abstract: | Through example of IGS stations in China’s inland and coastal，the FES2004 and NAO99b ocean tidal model which are advanced models at present and different earth models are adopted to calculate the effect of ocean tide loading on displacement of station and baseline length,the results show that the magnitude of the effect on displacement of station is up to centimeter，which is mainly reflected on the U direction，the magnitude of offshore stations is 3-4 times as large as that of inland stations，the differences between the different ocean models achieve the magnitude of millimeter in coastal areas，and the differences between different earth model is small，which can be ignored，the relative influence of ocean tide loading on GPS baseline length is about 10-8.The data of several days is processed through GAMIT，the results of calculation show that the effect of ocean loading on baseline components is similar to that of stations，the magnitude of which is millimeter，the influence on the determination of zenith delay in coastal regions can be up to 1 cm. |
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| Keywords: | ocean tide loading ocean tide model earth model baseline components zenith delay |
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