CORS Double-Difference Ionospheric Delay Interpolation Model Accuracy Analysis Over Long Distances
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摘要: 为了验证传统的内插模型能否满足远距离下连续运行参考站系统(CORS)的双差电离层延迟精度的需求.通过构建电离层双差观测方程,以线性内插模型(LIM)和距离相关线性内插模型(DIM)为研究对象,以虚拟参考站技术(VRS)为代表,将解算得到的监测站双差电离层延迟与通过LIM和DIM内插算法得到的监测站双差电离层延迟进行对比,分析这两种模型在远距离CORS网下的双差电离层延迟内插效果.实验结果表明，在远距离CORS网监测站条件下,LIM模型的内插精度高于DIM模型内插精度.
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关键词:
- CORS系统 /
- 双差电离层延迟 /
- 线性内插模型 /
- 距离相关线性内插模型
Abstract: In order to verify whether the traditional interpolating model can meet the requirement of double-difference ionospheric delay accuracy of the continuously operating reference station CORS system at a long distance. By constructing an ionospheric double-difference observation equation, linear interpolation model (LIM) and distance-dependent linear interpolation model (DIM) are taken as the research object, and virtual reference station technology (VRS) is represented as the representative monitoring station. The differential ionospheric delay is compared with the double-difference ionospheric delay of the monitoring station obtained by LIM and DIM interpolation algorithm. The two models are analyzed under the longdistance CORS network. The double difference ionosphere delay interpolation effect. The experimental results show that the interpolation accuracy of the LIM model is higher than that of the DIM model under the condition of the remote CORS network monitoring station.-
Key words:
- CORS system /
- doubledifference ionospheric delay /
- LIM /
- DIM
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[1] 邓健,赵兴旺,张爱国.长距离稀疏参考站下网络RTK电离层误差内插模型精度分析［J］.测绘科学技术学报,2015,32(3):236-240. [2] 张树为,陈明剑,刘天恒,等.精密单点定位中附加先验电离层改正的内插方法研究［J］.全球定位系统,2017,42(1):90-94. [3] 王五魁,刘长建,吴洪举.IGS电离层VTEC产品内插算法解析［J］.全球定位系统,2013,38(6):17-21. [4] 唐卫明,刘经南,刘晖,等.一种GNSS网络RTK改进的综合误差内插方法［J］.武汉大学学报(信息科学版),2007(12):1156-1159. [5] 赵传华,秘金钟,党亚民,等.电离层内插模型的分析［J］.测绘科学技术学报,2013,30(2):140-143，148. [6] 李征航,黄劲松.GPS测量与数据处理［M］.武汉:武汉大学出版社,2005:87-90 [7] 曹文涛,郭际明,谢翔,等.基于CORS的电离层延迟建模方法［J］.测绘地理信息,2013,38(3):12-16. [8] 邱蕾,陈远鸿,段艳霞.GPS网络RTK流动站的电离层误差改正分析［J］.大地测量与地球动力学,2010,30(1):56-60. [9] DAI LIWEN,HAN SHAOWEI,WANG JINLING,et al.Comparison of interpolation algorithms in network-based GPS techniques［J］.Journal of the Institule of Navigation 2003,50(4):277-293. [10] HU G R,KHOO H S,GOH P C, et al.Development and assessment of GPS virtual reference stations for RTK positioning［J］.Journal of Geodesy,2003,77(5／6):2923002. [11] 李成钢. 基于多基站网络的VRS技术及其误差分析与建模［D］.成都：西南交通大学,2003. [12] 李吉之. 基于VRS技术的误差分析与建模［D］.阜新.辽宁工程技术大学,2007. -
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