中国空间科学技术2018，Vol.38Issue(3)：45-53,9.DOI:10.16708/j.cnki.1000-758X.2018.0034
基于加权鉴别函数的二进制偏移载波信号跟踪方法
Weighted discriminator function based tracking method for binary offset carrier signals
摘要
Abstract
To remove the ambiguity threat and maintain the outstanding code tracking performance of binary offset carrier (BOC) signals , an unambiguous tracking method based on weighted discriminator function(WDF) was developed . The WDF combined the noncoherent early minus late power (NELP) discriminator with the sub carrier phase cancellation technique (SCPC) discriminator to generate a discriminator function without false lock points for BOC signal tracking . Regarding BOC(10 ,5) signal , the simulation results show that compared with SCPC , pseudo correlation function based unambiguous delay lock loop ( PUDLL ) and symmetrical pulse ambiguity removing (SPAR) successively , the proposed WDF has 2 .5 dB , 5. 5 dB and 8. 3 dB improvement in terms of code tracking error . The multipath errors of WDF method are reduced to 60. 4%, 32. 8% and 38. 0%, respectively . Therefore , the proposed WDF is an effective BOC signal unambiguous tracking method with outstanding performance .关键词
二进制偏移载波/无模糊跟踪/加权鉴别函数/码跟踪性能/全球卫星导航系统Key words
binary offset carrier/unambiguous tracking/weighted discriminator function/code tracking performance/global navigation satellite system分类
信息技术与安全科学引用本文复制引用
严涛,王瑛,曲博,王国永,雷文英,边朗..基于加权鉴别函数的二进制偏移载波信号跟踪方法[J].中国空间科学技术,2018,38(3):45-53,9.基金项目
国家自然科学基金(61627817) （61627817）
