| 中长距离网络RTK大气延迟的Kriging插值方法研究 |
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| 引用本文： | 郭秋英, 郝光荣, 陈晓岩. 中长距离网络RTK大气延迟的Kriging插值方法研究[J]. 武汉大学学报 ( 信息科学版), 2012, 37(12): 1425-1428. |
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| 作者姓名： | 郭秋英 郝光荣 陈晓岩 |
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| 作者单位： | 1山东建筑大学土木工程学院,济南市凤鸣路250101;2山东建筑大学土木工程学院,济南市凤鸣路250101;南方测绘济南分公司,济南市解放路19号250013 |
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| 基金项目： | 国家自然科学基金资助项目，山东省中青年科学家奖励基金资助项目 |
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| 摘 要： | 利用普通Kriging插值的指数函数模型和高斯函数模型,精密地实时估计网络RTK中用户站每一历元的大气延迟。利用一个含6个参考站的GPS网络(参考站间距为38.8～132.7km)的观测数据进行了实验,结果表明,对于长度为79.1km的基线的双差电离层延迟和双差对流层延迟,相应的Kriging插值(指数模型和高斯模型)的精度一般可达2cm和5cm,这表明普通Kriging插值可用于网络RTK用户站的大气延迟内插。
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| 关 键 词： | Kriging插值 变异函数 大气延迟 网络RTK |
| 收稿时间： | 2012-10-11 |
Kriging Interpolation for Atmospheric Delay of Medium- and Long-range Network-RTK |
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| GUO Qiuying, HAO Guangrong, CHEN Xiaoyan. Kriging Interpolation for Atmospheric Delay of Medium-and Long-range Network-RTK[J]. Geomatics and Information Science of Wuhan University, 2012, 37(12): 1425-1428. |
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| Authors: | GUO Qiuying HAO Guangrong CHEN Xiaoyan |
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| Affiliation: | 1 School of Civil Engineering,Shandong Jianzhu University,Fengming Road,Ji'nan 250101,China;2 South Surveying Corporation Ji'nan Branch,19 Jiefang Road,Ji'nan 250013,China |
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| Abstract: | Based on ionospheric and tropospheric delay calculated through a GPS reference station network,ordinary Kriging interpolation with Exponential and Gaussian functional model was investigated to estimate epoch-by-epoch ionospheric and tropospheric delay respectively for network-RTK user station.A GPS reference network including six stations(baselines range from 38.8 km to 132.7 km) was used to test Kriging interpolation method.Experimental results show that approximate 2 cm and 5 cm interpolation accuracy respectively for ionospheric and tropospheric delay for a baseline of 79.1 km is achieved using ordinary Kriging interpolation,which indicates that ordinary Kriging(Exponential and Gaussian functional model) is suitable for atmospheric delay interpolation of user station in medium-and long-range network-RTK system. |
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| Keywords: | Kriging interpolation variogram atmospheric delay network RTK |
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