电讯技术2018，Vol.58Issue(4)：402-406,5.DOI:10.3969/j.issn.1001-893x.2018.04.007
采用锁频环和锁相环联合捕获的载波跟踪
Carrier Tracking Based on Joint Acquisition of Frequency Locked Loop and Phase Locked Loop
高亢 1侯孝民 1赵强 1彭保童1
作者信息
- 1. 航天工程大学 光电装备系,北京101416
- 折叠
摘要
Abstract
To solve the problem of frequency step in the frequency locked loop(FLL) - phase locked loop (PLL) carrier tracking algorithm's conversion state,an improved algorithm,or PLL and FLL joint acquisi-tion,is proposed to replace the single FLL to acquire frequency,and the loop state transition threshold is deduced.Simulation results show that the improved algorithm is more stable in the conversion process,and the loop performance is more optimal.When there is a jerk rate and the signal-to-noise ratio(SNR) is-10 dB,the frequency step does not appear,which shows the expectation of design.关键词
测控系统/载波跟踪/锁频环/锁相环/频率阶跃Key words
TT&C system/carrier tracking/frequency locked loop(FLL)/phase locked loop(PLL)/fre-quency step分类
信息技术与安全科学引用本文复制引用
高亢,侯孝民,赵强,彭保童..采用锁频环和锁相环联合捕获的载波跟踪[J].电讯技术,2018,58(4):402-406,5.
