摘要
提出了一种系统的非白干扰白化分析方法。该方法通过相应的白化系数,将非白干扰转换成等效的白噪声,从而简化了GNSS系统干扰分析过程。新方法充分考虑了相干处理和非相干处理的特点,因而比以往白化方法更适用于码跟踪环节非白干扰的分析;并通过引入新的参数,使非白干扰对码跟踪影响的分析过程得以简化。对于即时通道的干扰分析,新方法同样显示出优越性,可令非白干扰引起的后相关信噪比及载波跟踪误差的分析过程更为简单明确。仿真结果表明,新方法可获得更为精确的分析结果。相比以往的非白干扰分析方法,新方法适用范围更广泛,应用也更为简单。
In this paper,a systematic method is presented for analyzing the effects of non-white interference in GNSS.The analysis process will be simplified by using this method,because non-white interferences can be converted to equivalent white noise by means of corresponding whitening coefficients.Since it takes into full consideration of the characteristics of coherent processing and non-coherent processing,this method is more suitable for code tracking than the previous.By introducing new parameters,the effects of non-white interference on code tracking can be evaluated easily.For the interference analysis of prompt channel,it also shows superior to quantify the effects of non-white interference on the post correlation signal-noise-radio and carrier tracking error.The simulations show that more accuracy analysis result can be achieved by this method.Compared with conventional methods,it is more general and simpler to apply.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2013年第5期649-656,共8页
Journal of Astronautics
基金
国家自然科学基金(61004123)
关键词
非白干扰
白化系数
载波跟踪
伪码跟踪
Non-white interference
Whiten coefficient
Carrier tracking
Code tracking
