An improvement of GPS height estimations: stochastic modeling
文献类型：期刊论文
| 作者 | Jin, SG; Wang, J; Park, PH |
| 刊名 | EARTH PLANETS AND SPACE
 |
| 出版日期 | 2005 |
| 卷号 | 57期号:4页码:253-259 |
| 关键词 | stochastic modeling GPS IGS height |
| 英文摘要 | The results of GPS positioning depend on both functional and stochastic models. In most of the current GPS processing programs, however, the stochastic model that describes the statistical properties of GPS observations is usually assumed that all GPS measurements have the same accuracy and are statistically independent. Such assumptions are unrealistic. Although there were only a few studies modeling the effects on the GPS relative positioning, they are restricted to short baselines and short session lengths. In this paper, the stochastic modeling for IGS long-baseline positioning (with 24-hour session) its analyzed in the GAMIT software by modified stochastic models. Results show that any mis-specifications of stochastic model result in unreliable GPS baseline results, and the deviation of baseline estimations reaches as much as 2 cm in the height component. Using the stochastic model of satellite elevation angle-based cosine function, the precision of GPS baseline estimations can be improved, and the GPS baseline component is closest to the reference values, especially GPS height. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geosciences, Multidisciplinary |
| 研究领域[WOS] | Geology |
| 关键词[WOS] | RESIDUAL SYSTEMATIC-ERRORS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000229235400002 |
| 公开日期 | 2010-07-30 |
| 源URL | [http://119.78.226.72//handle/331011/10022]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Korea Astron & Space Sci Inst, Space Geodesy Res Grp, Taejon 305348, South Korea 2.Univ New S Wales, Sch Surveying & Spatial Informat Syst, Sydney, NSW 2052, Australia 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, SG,Wang, J,Park, PH. An improvement of GPS height estimations: stochastic modeling[J]. EARTH PLANETS AND SPACE,2005,57(4):253-259. |
| APA | Jin, SG,Wang, J,&Park, PH.(2005).An improvement of GPS height estimations: stochastic modeling.EARTH PLANETS AND SPACE,57(4),253-259. |
| MLA | Jin, SG,et al."An improvement of GPS height estimations: stochastic modeling".EARTH PLANETS AND SPACE 57.4(2005):253-259. |
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来源：上海天文台
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