基于渐消因子的ECEF-GLS估计算法  

ECEF-GLS estimation algorithm based on fading factor

作　　者：董云龙 张焱 DONG Yunlong;ZHANG Yan(Information Fusion Research Institute,Naval Aviation University,Yantai 264001,China;Unit 32654 of the PLA,Jinan 250000,China)

机构地区：[1]海军航空大学信息融合研究所,山东烟台264001 [2]中国人民解放军32654部队,山东济南250000

出　　处：《系统工程与电子技术》2024年第1期137-142,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(62101583,61871392)资助课题。

摘　　要：传统的误差配准算法假设系统偏差恒定或缓慢变化,当系统误差发生突变或快速变化时,这一假设不再成立。针对这一问题,研究了时变条件下的误差配准算法,引入渐消因子,对常规的基于地心地固坐标系的广义最小二乘算法(generalized least squares algorithm based on the earth-centered earth-fixed coordinate system,ECEF-GLS)进行了修正,弱化历史量测对配准的影响,并对渐消因子的选取问题进行了研究,给出了合理的设计方法。算法验证表明,基于渐消因子的ECEF-GLS估计算法能够对时变的系统偏差进行有效估计,精度满足配准要求。The traditional error registration algorithm assumes that the system deviation is constant or changes slowly,but this assumption is no longer valid when the system error changes suddenly or rapidly.To solve this problem,the error registration algorithm in time-varying condition is studied,the fading factor is introduced,the conventional generalized least squares algorithm based on the earth-centered earth-fixed coordinate system(ECEF-GLS)is revised,the historical measurement influence on registration is weaken,and the selection problem of fading factor are studied to give reasonable design method.The algorithm verification shows that the ECEF-GLS estimation algorithm based on fading factor can estimate the time-varying system deviation effectively,and the accuracy meets the requirements of registration.

关 键 词：基于地心地固坐标系的广义最小二乘算法 渐消因子 参数估计 时变 系统误差 

分 类 号：TN953[电子电信—信号与信息处理]