Open AccessBeyond line‐of‐sight two‐way time synchronisation via troposcatter
Author(s) -
Li Chenglong,
Chen Xihong
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2016.3789
Subject(s) - computer science , bandwidth (computing) , backup , coherence time , line of sight , electronic engineering , channel (broadcasting) , synchronization (alternating current) , real time computing , coherence (philosophical gambling strategy) , telecommunications , engineering , physics , quantum mechanics , database , aerospace engineering
Available beyond line‐of‐sight time synchronisation means are mainly through satellite and optical fibres. When considering that satellite links have insurmountable bandwidth and security problems, and cable links are not feasible for mobile stations, a backup two‐way time synchronisation means via troposcatter is proposed. The feasibility of the proposed method based on coherence bandwidth and transmission loss is analysed, and references for the time pulse signal design are provided. Then, two different signal time sequences schemes aiming at co‐channel interference are presented and evaluated, and the clock errors due to the incomplete symmetrical two‐way link are analysed. Finally, it is concluded that the proposed means is a promising candidate for beyond line‐of‐sight time synchronisation in emergency communication.