一种IRIG-B码与天线测角同步采集装置的设计  

Design of a synchronous acquisition device for IRIG-B code and antenna angle measurement

作　　者：杨家辉 霍克强 王硕辉 张建超 YANG Jiahui;HUO Keqiang;WANG Shuohui;ZHANG Jianchao(The 54th Research Institute of CETC,Shijiazhuang Hebei 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《河北省科学院学报》2024年第5期34-38,共5页Journal of The Hebei Academy of Sciences

摘　　要：卫星定轨需要对多个地面测控站上传的测角数据进行融合计算,测角数据的准确性将直接关系到卫星轨道计算结果的精度。测角数据的时间信息通常采用IRIG-B码系统提供,现阶段测控系统的时间同步精度已经达到纳秒级,但天线角度与时间同步精度受制于通信时延仅有毫秒级精度。针对测控领域的测角数据精度要求,本文提出了一种基于IRIG-B码与天线测角同步采集装置的设计方案,通过高速时钟对IRIG-B码信号进行采集和解调,在采集到IRIG-B码脉冲信号前沿进行天线角度锁存与采集,采集同步误差<±0.1μs。该设计已在某高精度15 m测控站系统中成功应用。Satellite orbit determination requires fusion calculation of angle measurement data uploaded by multiple TT&C stations.The accuracy of angle measurement data will directly affect the accuracy of satellite orbit calculation results.The time information of angle measurement data is usually provided by the IRIG-B code system.At present,the time synchronization accuracy of the measurement and control system has reached the nanosecond level,but the antenna angle and time synchronization accuracy are limited by communication delay,with only millisecond level accuracy.In response to the accuracy requirements of angle measurement data in the field of measurement and control,a design scheme for synchronous acquisition device based on IRIG-B code and antenna angle measurement is proposed.The IRIG-B code signal is collected and demodulated through a high-speed clock,and the antenna angle is locked and collected before collecting the IRIG-B code pulse signal.The acquisition synchronization error is less than±0.1μs.This design has been successfully applied in a high-precision 15 meter measurement and control station system.

关 键 词：IRIG-B码 测控站 测角数据 

分 类 号：TN82[电子电信—信息与通信工程]