国防科技大学学报2016，Vol.38Issue(6)：111-116,6.DOI:10.11887/j.cn.201606018
北斗导航信号电离层闪烁模拟及其影响
Simulating and analyzing the impact of ionospheric scintillation for BeiDou navigation signals
摘要
Abstract
Due to its accidental,sudden and regional characteristics,the simulation of GNSS navigation signals under ionospheric scintillation is difficult to be implemented accurately.The ionospheric scintillation time-series generation method based on Gamma distribution and zero-mean Gaussian distribution was proposed.With the NSS8000,a multi-system navigation signal simulator developed by our department,the hardware architecture of BeiDou navigation signal simulation under ionospheric scintillation was given.Then based on this,by intermediate frequency signal sampling and software receiver processing,the impact of ionospheric scintillation on BeiDou receiver tracking loops was analyzed.The results indicate that the code tracking error can reach 0. 05 chips when the phase scintillation index is 0 and amplitude scintillation index is 0. 9,while the carrier tracking error can reach 15 degrees when the amplitude scintillation index is 0 and the phase scintillation index is only 0. 5,which the carrier tracking loops is almost loss of lock.关键词
电离层闪烁/闪烁指数/导航信号模拟/跟踪环路/鉴相误差Key words
ionospheric scintillation/scintillation index/navigation signal simulation/tracking loops/discriminator error分类
天文与地球科学引用本文复制引用
孙鹏跃,黄仰博,唐小妹,孙广富..北斗导航信号电离层闪烁模拟及其影响[J].国防科技大学学报,2016,38(6):111-116,6.基金项目
国家自然科学基金资助项目 （）
