箭载GPS异常数据检测与剔除  

Detection and Elimination Algorithm for Outliers of On-board GPS

作　　者：张栋[1,2] 于宁莉[3] 许爱华[2] 

机构地区：[1]中国西安卫星测控中心宇航动力学国家重点实验室,西安710043 [2]中国西安卫星测控中心,西安710043 [3]第二炮兵工程大学,西安710025

出　　处：《载人航天》2013年第5期37-40,共4页Manned Spaceflight

基　　金：国家自然科学基金(61074077)

摘　　要：箭载GPS数据处理中,消除异常数据对运载火箭弹道定位结果十分重要。针对箭载GPS原始测量数据的不同特性,结合时间序列差分及门限检测等算法,给出了测量数据的状态位检测、时标错位检测、CodeTime检测和多普勒频率检测等异常数据检测与剔除算法。实测数据结果表明,本文给出的检测算法可确保运载火箭的弹道完整性,并可有效提高运载火箭的弹道精度。It＇ s very important to get rid of the effects of outlier on the trajectory precision of carrier rocket during on-board GPS data processing. Targeting different characteristics of the on-board GPS original data, the detection and elimination algorithms including state detection, time dislocation detection, CodeTime detection and doppler frequency detection were proposed on the basis of the time series differential and threshold detection. The measured data showed that the detection and elimination algorithms could ensure the integrity of the rocket trajectory and could effectively improve the trajectory accuracy.

关 键 词：箭载GPS 火箭弹道 异常数据 检测 

分 类 号：V421.1[航空宇航科学与技术—飞行器设计] V556.2