典型文献
Impact of receiver inter-frequency bias residual uncertainty on dual-frequency GBAS integrity
文献摘要：
Dual-Frequency Ground-Based Augmentation Systems(GBAS)can be affected by recei-ver Inter-Frequency Bias(IFB)when Ionosphere-Free(Ifree)smoothing is applied.In the frame-work of the proposed GBAS Approach Service Type F(GAST-F),the IFB in the Ifree smoothed pseudorange can be corrected.However,IFB residual uncertainty still exists,which may threaten the integrity of the system.This paper presents an improved algorithm for the air-borne protection level considering the residual uncertainty of IFBs to protect the integrity of dual-frequency GBAS.The IFB residual uncertainty multiplied by a frequency factor is included in the Ifree protection level together with the uncertainty of other error sources.To verify the pro-posed protection level algorithm,we calculate the IFB residual uncertainties of ground reference receivers and user receiver based on BDS B1I and B3I dual-frequency observation data and carry out a test at the Dongying Airport GBAS station.The results show that the proposed Ifree protec-tion level with IFB residual uncertainty is 1.48 times the current protection level on average.The probability of Misleading Information(MI)during the test is reduced from 3.2×10-4 to the required value.It is proven that the proposed protection level can significantly reduce the integrity risk brought by IFB residual uncertainty and protect the integrity of dual-frequency GBAS.
文献关键词：
中图分类号：
作者姓名：
Kai KANG;Kun FANG;Yanbo ZHU;Yuan LIU;Zhipeng WANG;Qiang LI
作者机构：
National Key Laboratory of CNS/ATM,School of Electronic and Information Engineering,Beihang University,Beijing 100083,China;Research Institute for Frontier Science,Beihang University,Beijing 100083,China
文献出处：
引用格式：
[1]Kai KANG;Kun FANG;Yanbo ZHU;Yuan LIU;Zhipeng WANG;Qiang LI-.Impact of receiver inter-frequency bias residual uncertainty on dual-frequency GBAS integrity)[J].中国航空学报（英文版）,2022(11):349-362
A类：
recei,Ifree,pseudorange,IFBs,Misleading
B类：
Impact,inter,frequency,bias,residual,uncertainty,GBAS,integrity,Dual,Frequency,Ground,Based,Augmentation,Systems,be,affected,by,Inter,Bias,when,Ionosphere,Free,smoothing,applied,frame,work,proposed,Approach,Service,Type,GAST,smoothed,corrected,However,still,exists,which,may,threaten,system,This,paper,presents,improved,algorithm,air,borne,protection,level,considering,multiplied,included,together,other,error,sources,To,verify,calculate,uncertainties,ground,reference,receivers,user,BDS,B1I,B3I,observation,data,carry,out,test,Dongying,Airport,station,results,show,that,times,current,average,probability,Information,MI,during,reduced,from,required,value,It,proven,significantly,risk,brought
AB值：
0.445801
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