电子学报2011，Vol.39Issue(6)：1410-1416,7.
卫星导航信号抗单频干扰性能研究
Study on Evaluating the Impact of CWI on DLL Tracking Performance for GNSS Signals
摘要
Abstract
For different signal structures,the degradation of tracking performance caused by CWI (continuous wave interference) is different. The traditional analyses and the corresponding results are obtained with the assumption that the CWI complies with the Gaussian distribution and the effect of PRN (Pseudo-Random Noise) on performance is ignored. With the consideration of the effect of discrete spectrum line of PRN code, the expression of the maximum code tracking error of the non-coherent early-minus-late power discriminator for infinite front-end bandwidth case under CWI is provided and the validation of the expression by computer simulation is performed. The maximum tracking error, average tracking error, and relative tracking error are used to evaluate the anti CWI performance of the GNSS (global navigation satellite system) signal. The comparison of the tracking performance between the coherent early-minus-late and the non-coherent early-minus-late power discriminators under CWI shows that their performance difference is obvious under low signal-to-interference ratio and the performance difference depends on the modulation types. At last,the evaluation of the anti CWI performance among all GPS C/A codes and the comparison of the performance among BPSK(1) ,BOC(1,1),and MBOC(6,1,1/11) under CWI are performed, respectively.关键词
卫星导航系统/信号体制/误差分析/单频干扰/非相干延迟锁相环/码跟踪误差Key words
global positioning system/signal structure/error analysis/continuons wave interference/non-coherent delay lock loop/code tracking error分类
信息技术与安全科学引用本文复制引用
刘禹圻,胡修林,冉一航,柯(廷页)..卫星导航信号抗单频干扰性能研究[J].电子学报,2011,39(6):1410-1416,7.基金项目
中国卫星导航年会资助课题(No.CSNC2010-QY-007) （No.CSNC2010-QY-007）
中国科学院基金(No.2009PNTT06) （No.2009PNTT06）
