CAJ | 학술논문

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。
침대항천기측공특점,저신조비신호검측시실현항천측공계통목표쾌속포획적관건기술。위료해결조빈요측신호저신조비검측난제,개소료채용정교시량순시측빈방법적조빈요측신호해조방법,분석료조빈요측신호정격식,재차기출상제출료기우정격식적조빈요측신호필배려파검측법。방진결과표명소제방법능실현재저신조비조건하조빈요측신호적고개솔검측。
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.