| 基于相对电离层延迟模型的单频GPS精密单点定位算法研究 |
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| 引用本文： | 张帆.基于相对电离层延迟模型的单频GPS精密单点定位算法研究[J].测绘与空间地理信息,2016(5). |
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| 作者姓名： | 张帆 |
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| 作者单位： | 福建省测绘院,福建福州,350003 |
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| 摘 要： | 分析了单频GPS精密单点定位的特点,提出了先在卫星间求差,再在相邻历元间求差的单频GPS动态定位数学模型,实现了定位坐标的非线性参数估计求解方法。为了降低电离层延迟残差对单频PPP的影响,研究建立了一种相对电离层延迟模型,并基于神经网络理论,实现了相应的算法,通过计算实例进行了精度分析。
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| 关 键 词： | 单频GPS精密单点定位 非线性参数估计 相对电离层延迟模型 |
A Single Frequency PPP Algorithm Based on Relative Ionospheric Delay Model |
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| Abstract: | The characteristics of single frequency GPS precise point positioning are analyzed , and put forward first in inter satellite differencing , and between the two adjacent epochs for poor single frequency GPS dynamic positioning mathematical model , to achieve the positioning coordinates of the nonlinear parameter estimation method to solve them .To weaken the ionosphere delay residuals of the single frequency PPP influence , study the establishment of the relative ionospheric delay model , and based on the theory of neural net-work, the realization of the corresponding algorithm , through examples of calculation and precision analysis . |
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| Keywords: | single frequency precise point positioning nonlinear parameter estimation relative ionospheric delay model |
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