基于极值包络的遥测振动信号野值剔除方法  

The Outliers Elimination Method of Telemetry Vibration Signal Based on Extreme Envelope

作　　者：张志国[1] 张慧娟[1] 黄晓冬 ZHANG Zhiguo;ZHANG Huijuan;HUANG Xiaodong(PLA91550 Unit 94,Dalian,116023,China)

机构地区：[1]中国人民解放军91550部队94分队,辽宁大连116023

出　　处：《强度与环境》2023年第4期49-53,共5页Structure & Environment Engineering

基　　金：国家自然科学基金(61801482)。

摘　　要：针对飞行器试验遥测振动信号在收发和传输过程中高位误码产生野值的问题,提出了一种基于极值包络的野值检测和剔除方法。根据遥测振动信号振幅对称特性,找出信号的正负极值点,并分别对正负极值点进行样条插值得到上下极值包络,依据莱特准则利用上下极值包络幅度差值实现野值检测和剔除。仿真和实测数据处理结果证明,基于极值包络的遥测振动信号野值剔除方法对孤立型野值和斑点型野值均有较好效果。During the flight vehicle test,the outliers often generate telemetry vibration signal of high bit error.Hereby an outliers detection and elimination method based on extreme envelope is proposed.The positive and negative extreme is determined at first,and the upper and lower extreme envelope can be obtained by spline interpolation.The outliers can be detected and eliminated according to Wright criterion based on the difference of the upper and lower extreme envelope.The simulation and test data processing results show effectiveness of the proposed method for outlier elimination of telemetry vibration signal,including isolated outliers and mottled outliers.

关 键 词：飞行器试验 遥测 振动信号 野值 极值包络 

分 类 号：V416.5[航空宇航科学与技术—航空宇航推进理论与工程]