| NeQuick2模型在星载单频GPS实时定轨中的应用 |
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| 引用本文： | 王甫红,王军,郭磊.NeQuick2模型在星载单频GPS实时定轨中的应用[J].大地测量与地球动力学,2018,38(4):370-373. |
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| 作者姓名： | 王甫红 王军 郭磊 |
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| 作者单位： | 武汉大学测绘学院;地球空间信息技术协同创新中心;北京合众思壮科技股份有限公司 |
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| 摘 要： | 在星载单频GPS实时定轨中引入NeQuick2三维电离层延迟改正模型，首先利用GIM对Klobuchar和NeQuick2模型进行精度评估，然后使用不同电离层改正方法模拟仿真星载单频GPS实时定轨实验。结果表明，当卫星轨道低于500 km时，相比于传统的改进Klobuchar改正的定轨精度，利用NeQuick2改正的定轨精度提高0.2 m左右，与双频伪距法定轨精度相当。
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| 关 键 词： | 实时定轨 单频 电离层 NeQuick2 |
Application of NeQuick2 in Space-Borne GPS Single-Frequency Real-Time Orbit Determination |
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| WANG Fuhong,WANG Jun,Guo Lei.Application of NeQuick2 in Space-Borne GPS Single-Frequency Real-Time Orbit Determination[J].Journal of Geodesy and Geodynamics,2018,38(4):370-373. |
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| Authors: | WANG Fuhong WANG Jun Guo Lei |
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| Abstract: | In this paper, a three-dimensional ionosphere model-NeQuick2 is introduced. We firstly evaluate the precision of Klobuchar and NeQuick2 using global ionosphere maps and then perform the SADODS simulation experiments in different methods, using different ways to eliminate the influence of ionosphere. The results demonstrate that the orbital accuracies using NeQuick2 are improved by 0.2 m compared to the traditional method using modified Klobuchar. |
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| Keywords: | real-time orbit determination single frequency ionosphere NeQuick2 |
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