摘要
利用区域GNSS参考网络进行宽巷及窄巷硬件延迟的估计,进而利用硬件延迟估计值对PPP模糊度进行固定。使用重庆CORS数据对该方法进行了实验分析。结果表明,宽巷及窄巷硬件延迟在一段时期内均比较稳定,宽巷及窄巷固定成功率分别达90%、85%左右。相对于浮点解,固定解精度在测站东方向上提高了30%左右。
We introduce a method to estimate the uncalibrated hardware delays for wide lane and narrow lane to fix the ambiguities in PPP applied to estimate delays. We apply the pro- posed method on the Chongqing CORS. The results showed that delays in the wide lane and narrow lane were rather stable in a period. The fixed rates in the wide and narrow lane reached 90% and 85% respectively. The accuracy of the fixed solution was improved by a- bout 30% in eastern direction over the float solution.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2013年第11期1281-1285,共5页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(41174012
41274022)
国家863计划资助项目(2013AA122502)
教育部新世纪优秀人才支持计划资助项目(NCET-12-0428)
关键词
精密单点定位
模糊度固定
无电离层组合
硬件延迟
星间单差
precise point positioning
ambiguity fixing
ionosphere-free combination
hard-ware delay
single difference between satellite
