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| GPS精密钟差内插方法研究 | |
| 引用本文： | 李大章,顾和和,李研岩,齐星星. GPS精密钟差内插方法研究[J]. 全球定位系统, 2012, 37(3): 75-78 |
| 作者姓名： | 李大章 顾和和 李研岩 齐星星 |
| 作者单位： | 1. 中国矿业大学环境与测绘学院,江苏徐州221116 中国矿业大学江苏省资源环境信息工程重点实验室,江苏徐州221116 2. 上海中房测绘有限公司,上海,200434 |
| 摘 要： | GPS钟差的计算,可以通过精密星历内插所得。将IGS提供的15min精密星历内插到5min,其中分别用拉格朗日多项式、切比雪夫多项式法来进行内插,根据两种插值多项式分别比较分析在不同阶数情况下内插的精度。详细介绍了拉格朗日多项式、切比雪夫多项式插值法的基本原理,通过算例得出了拉格朗日与切比雪夫的拟合精度都可以满足精密定位需要,且切比雪夫插值的精度更高。 |
| 关 键 词： | GPS 精密星历 插值方法 卫星钟差 |
Study on the GPS Precise Clock Error Interpolation |
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| LI Dazhang,GU Hehe,LI Yanyan,QI Xingxing. Study on the GPS Precise Clock Error Interpolation[J]. Gnss World of China, 2012, 37(3): 75-78 | |
| Authors: | LI Dazhang GU Hehe LI Yanyan QI Xingxing |
| Affiliation: | 1. School of Environment and Spatial ln f ormatics , China University of Mining and Technology, Xuzhou Jiangsu 221118, China;2. China University of Mining and Technology Jiangsu Key Laboratory of Resources and Environmental Information Engineering, Xuzhou Jiangsu 221116, China;3. China Mapping of Shanghai Co. Ltd. , Shanghai 200434, China) |
| Abstract: | GPS clock error is calculated, precise ephemeris can be derived from interpola- tion. The main content of this thesis is to provide the IGS precise ephemeris interpolated 15 rain into the 5 min, whichwere used Lagrange polynomials, Chebyshev polynomial to be in- terpolated, and according to the selected interpolating polynomial to a comparative analysis of different order of interpolation accuracy. Details of the Lagrange polynomials, Chebyshev polynomial interpolation of the basic principles and their application are introduced. The ac- curacy of Lagrange polynomials can satisfy the precision requirement for GPS precise positio- ning, and the accuracy of the Chebyshev interpolation is higher . |
| Keywords: | GPS precise ephemeris interpolation method clock error |
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