全球定位系统2024，Vol.49Issue(2)：1-8,8.DOI:10.12265/j.gnss.2023225
不同电离层改正模型的SF-PPP定位精度分析
The performance of SF-PPP corrected by different ionospheric models
摘要
Abstract
Ionospheric delay can seriously affect the positioning accuracy of single-frequency global navigation satellite system(GNSS)receiver.Thus,this paper assessed the positioning error of single-frequency GNSS receiver corrected by four commonly used ionospheric delay correction methods,i.e.,broadcast ionospheric correction models(strategy 1),time-rotation interpolation of Global Ionosphere Map(GIM)considering the variation of the position for the sun(strategy 2),GIM corrected by ionospheric mapping function(strategy 3),and half-sum correction model(strategy 4).Meanwhile,the correction results of different methods for the single-frequency precise point positioning(SF-PPP)were evaluated by using the data collected by ground-based GNSS stations over different latitudes on solar condition days.The assessment results were listed as follows.1)The positioning error of SF-PPP corrected by the half-sum correction model was the best,then was the ionospheric delay corrected GIM.The positioning error corrected by broadcast ionospheric model was the worst.2)On different solar condition days of each strategy,the positioning error for low-latitude stations was the largest,the was high-latitude stations.The positioning error for mid-latitude stations was the smallest.3)The horizontal positioning error of strategy 2 and strategy 3 was about 0.150 m over different latitudes on different solar activity periods,while the 3D positioning error is about 0.700 m.The corresponding errors were about 0.100 m and 0.500 m for strategy 4.关键词
单频接收机/电离层/电离层改正模型/单频精密单点定位(SF-PPP)Key words
single-frequency receiver/ionosphere/ionospheric correction model/single-frequency pre-cise point positioning分类
测绘与仪器引用本文复制引用
吴丕团,覃现,韦佳,肖明虹,黄铭,杨钊..不同电离层改正模型的SF-PPP定位精度分析[J].全球定位系统,2024,49(2):1-8,8.基金项目
国家自然科学基金项目(41704027) （41704027）
中央引导地方科技发展资金专项-柳州市科技计划项目(2022SRZ0101) （2022SRZ0101）
