摘要
针对传统GF组合受电离层变化影响较大的问题,提出一种GF组合周跳检验方法,并利用大量实测数据分析方法的周跳探测性能。实验结果表明:该方法能较好地消除电离层趋势项的影响,可在不同电离层活跃的情况下利用其探测周跳,较之传统GF组合更为稳定且通用,对个数少的周跳更加敏感;当与MW组合联合使用时,能够明显改善电离层活跃条件下的静态精密单点定位结果。
Aiming at the problem that the traditional GF combination method is liable to the ionospheric variation,the paper proposed a cycle slip detection method of GF combination,and verified its detection performance by a large number of observation data.Experimental result showed that the method could effectively eliminate the trend components of ionospheric variations and detect cycle slips under different ionosphere conditions,with more universal and stable characters compared with traditional GF combination,moreover,it would be sensitive to the small number of cycle slips;besides,it could improve the positioning of static PPP under high ionospheric activity when integrating with MW combinations.
出处
《导航定位学报》
CSCD
2017年第4期6-9,共4页
Journal of Navigation and Positioning
基金
国家重点研发计划地球观测与导航重点专项(2016YFB0501900)
广州市科技计划项目(201604010075)
广东省海洋创新发展产业化重点项目(GD2015C1-002)
关键词
周跳探测
GF组合
二阶差分
电离层
精密单点定位
cycle slip detection
geometry-free combination
second-order difference
ionosphere
precise point positioning
