测绘科学技术学报2017，Vol.34Issue(5)：470-474,5.DOI:10.3969/j.issn.1673-6338.2017.05.007
弱电离层组合SPP在极区定位效果分析
Analysis of SPP Result in Polar Regions Based on Iono-Weak Combination
摘要
Abstract
The Klobuchar model and dual-frequency iono-free combination are studied respectivily in the application of standard point positioning.The model is not applicable in polar regions,and the pseudo-code noise will be magnified in iono-free combination.In allusion to the disadvantage of iono-free combination,the magnified noise is treated as the principle error in SPP.The balance between the noise reduction and the incomplete elimination of ionospheric delay is finded.A new combination is proposed considering both the noise reduction and the ionopsheric correction,which is called iono-weak combination.By calculating several days raw observation data of IGS tracking stations in Antarctic,the result is concluded that the positioning result of iono-weak combination is better than iono-free combination and the positioning accuracy can be increased by 15％ ～ 30％ generally.The improvements of different stations are not the same,and the poor observations will also make the positioning accuracy improvement not significant.关键词
电离层延迟/Klobuchar模型/消电离层组合/弱电离层组合/伪距单点定位Key words
ionoshperic delay/Klobuchar model/iono-free combination/iono-weak combination/standard point positioning分类
天文与地球科学引用本文复制引用
孔豫龙,柴洪洲,潘宗鹏,杨克凡,刘宸..弱电离层组合SPP在极区定位效果分析[J].测绘科学技术学报,2017,34(5):470-474,5.基金项目
国家自然科学基金项目(41274045 （）
41374041 （）
41574010). （）
