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陕西省北斗三号区域电离层TEC建模与精度评估
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P228.4

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国家自然科学基金(42127802);陕西省重点研发计划(2022ZDLSF07-12)


Modeling and accuracy assessment of regional ionospheric TEC over Shaanxi province based on BDS-3
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    摘要:

    基于陕西省北斗地基增强监测站数据,利用4阶球谐函数建立了陕西区域电离层总电子含量(TEC)模型,生成区域TEC格网产品.实验结果表明:以欧洲定轨中心(CODE)全球电离层图(GIM)产品作为参考,利用BDS-3数据获得的陕西区域北斗电离层产品精度为2.54TECu,与CODE产品标称精度相当.在单频精密单点定位(SF-PPP)性能方面,BDS-3区域电离层产品可以提升定位精度35%,优于CODE全球电离层产品改正效果(27%).综合而言,BDS-3单系统在区域电离层建模方面具备较为优异的性能水平.

    Abstract:

    Based on data from BeiDou ground-based augmentation monitoring station in Shaanxi province,a Shaanxi regional ionospheric total electron content(TEC) model is established using the fourth-order spherical harmonic function to generate regional TEC grid products.The experimental results show that the accuracy of the Shaanxi regional ionospheric products obtained from BDS-3 data is 2.54 TECu,which is comparable to the nominal accuracy of the Global Ionospheric Map(GIM) product of the Center for Orbit Determination(CODE).In terms of single frequency precise point positioning(SF-PPP) performance,the BDS-3 regional ionospheric product improves the positioning accuracy by 35%,which is better than the correction performance of the CODE global ionospheric product(27%).Overall,the BDS-3 single system has superior performance in regional ionospheric modeling.

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王紫薇,黄观文,杜石,谢威.陕西省北斗三号区域电离层TEC建模与精度评估[J].南京信息工程大学学报(自然科学版),2022,14(6):737-743
WANG Ziwei, HUANG Guanwen, DU Shi, XIE Wei. Modeling and accuracy assessment of regional ionospheric TEC over Shaanxi province based on BDS-3[J]. Journal of Nanjing University of Information Science & Technology, 2022,14(6):737-743

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历史
  • 收稿日期:2022-08-09
  • 在线发布日期: 2022-12-14

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