摘要
针对单频低成本芯片导航芯片高精度定位的周跳频繁和卫星频繁升降问题,提出双差高次差和多普勒探测法组合的周跳探测方法。对频繁模糊度和卫星升降,采用延迟模糊度估计方法,有效解决了升降卫星对模糊度整体固定失败的影响。基于试验数据定量分析了该方法的有效性,分析结果表明:基于该方法的固定率达到85%以上,基于低成本和低功耗的导航芯片可实现分米级的定位性能。
In view of frequent cycle slip and satellite fluctuation in high-accuracy positioning with single-frequency low-cost navigation chip,this paper proposes a cycle slip detection method,which combines the double difference high-order difference and Doppler detection methods.For frequent ambiguity and satellite fluctuation,the delayed ambiguity estimation method is used to effectively eliminate the effect of the satellite fluctuation on the failure of the overall fixed failure of the satellite.The effectiveness of this method is quantitatively analyzed based on experimental data.The analysis results show that based on this method,the fixed rate is more than 85%,and the navigation chip based on low cost and low consumption can achieve better positioning performance at decimeter level.
作者
郑志全
盛传贞
韩保民
董孝松
ZHENG Zhiquan;SHENG Chuanzhen;HAN Baomin;DONG Xiaosong(School of Civil and Architectural Engineering,Shandong University of Technology,Zibo 255049,China;The 54th Research Institute of CETC,Shijiazhuang 050081,China)
出处
《无线电工程》
2018年第12期1081-1085,共5页
Radio Engineering
基金
国家重点研发计划基金资助项目(2016YFB0502101)
关键词
RTK定位
单频
关键算法
周跳探测
双差高次差
模糊度固定
RTK positioning
single frequency
key algorithm
cycle slip detection
double difference high-order difference method
ambiguity fixed
