摘要
为了对卫星地面测试和在轨运行期间可能发生导致遥测信号异常的偶发故障进行排查,快速精确地定位问题,文章进行了异常遥测信号识别方法研究。针对二进制相移键控/相位调制(BPSK/PM)遥测信号,通过分析信号的特征,总结了遥测接收过程中异常信号可能发生的三种情况及其原因,提出一种基于参数估计的异常遥测信号识别方法,并进行了仿真验证。该方法的应用可以宏观区分遥测调制信号异常与数据异常,并作为异常信号存储和再处理的基础,从而为故障判定提供数据支撑。
The paper researches abnormal telemetry signals recognition method to check the possible random failure which could result in telemetry signals abnormity during ground testing and inorbit operation of satellite and to find out the problems quickly and accurately.The paper summarizes three abnormal situations in telemetry receiving process by analyzing the characters of BPSK/PM signals,puts forward a recognition method based on parameter estimation and finishes emulation proof.The application of the method establishes foundation for storage and disposal of abnormal signals afterward and provides data support for trouble determinant.
出处
《航天器工程》
北大核心
2016年第6期75-80,共6页
Spacecraft Engineering
