电讯技术2017，Vol.57Issue(6)：635-642,8.DOI:10.3969/j.issn.1001-893x.2017.06.004
脉冲超宽带测控信号时延精密跟踪方法
A Timing Tracking Method for Impulse Radio UWB TT&C Signal
摘要
Abstract
The new impulse radio ultra-wideband(IR-UWB) tracking,telemetry and command (TT&C) system can effectively improve the security performance of the TIT&C system,and has a potential high-precision range measuring capability.In order to realize the high-precision range measuring function,a precision timing tracking method based on delay-locked loop for IR-UWB TT&C signal is proposed.This method is improved on the basis of the traditional pseudo-code tracking loop and uses a non-linear feedback loop based on non-coherent integration to track the pulse phase of the received signal.Theoretical analysis and simulation results show that the delay-locked loop in this paper can complete the precision tracking of the IR-UWB TT&C signal.Compared with the direct sequence spread spectrum(DSSS) TIT&C signal,the relative timing tracking error of IR-UWB TT&C signal is larger under the same conditions,but because of the quite narrow pulse width,its measuring precision can still reach centimeter level and even higher under certain carrier-to-noise ratio.关键词
脉冲超宽带/测控/时延跟踪/延迟锁定环/高精度测距Key words
impulse radio UWB/TT&C/timing tracking/delay-locked loop/high-precision range measurement分类
信息技术与安全科学引用本文复制引用
廉昕,王元钦,侯孝民,孟祥利..脉冲超宽带测控信号时延精密跟踪方法[J].电讯技术,2017,57(6):635-642,8.
