基于帧格式的调频遥测信号检测方法分析  

Analysis on Frequency Modulated Telemetry Signal Detection Method Based on Frame Format

作　　者：吴海洲[1] 王志国[1] 王鹏毅[1] 

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：《无线电工程》2012年第5期18-20,共3页Radio Engineering

摘　　要：针对航天器测控特点,低信噪比信号检测是实现航天测控系统目标快速捕获的关键技术。为了解决调频遥测信号低信噪比检测难题,介绍了采用正交矢量瞬时测频方法的调频遥测信号解调方法,分析了调频遥测信号帧格式,在此基础上提出了基于帧格式的调频遥测信号匹配滤波检测法。仿真结果表明所提方法能实现在低信噪比条件下调频遥测信号的高概率检测。Considering the aerospace TTC characteristics,low signal-to-noise ratio（SNR） signal detection is the key technology of realizing the fast capture of spacecraft target.In order to solve the challenge of detecting frequency modulated telemetry signal at low SNR,the method of telemetry signal demodulation by orthogonal vector instantaneous frequency measurement is introduced.Then the telemetry signal frame format is analyzed,based on which a frame format-based matched filtering detection method of telemetry signal is proposed.The simulation result shows that frequency modulated telemetry signal detection at low SNR with high probability can be realized by the proposed method.

关 键 词：调频遥测 帧格式 匹配滤波检测 

分 类 号：TN911[电子电信—通信与信息系统]