An optimization iterative algorithm based on nonnegative constraint with application to Allan variance analysis technique

作     者：Lv, Hanfeng Zhang, Liang Wang, Dingjie Wu, Jie 

作者机构：Natl Univ Def Technol Coll Aerosp Sci & Engn Staff Room Flight Dynam & Control Changsha 410073 Hunan Peoples R China 

出 版 物：《ADVANCES IN SPACE RESEARCH》 (空间研究进展)

年 卷 期：2014年第53卷第5期

页      面：836-844页

核心收录：

学科分类：08[工学] 0708[理学-地球物理学] 0706[理学-大气科学] 0704[理学-天文学] 0825[工学-航空宇航科学与技术] 

主　　题：Allan variance Parameter estimation Optimization algorithm Inertial navigation Random error model 

摘      要：It is well known that inertial integrated navigation systems can provide accurate navigation information. In these systems, inertial sensor random error often becomes the limiting factor to get a better performance. So it is imperative to have accurate characterization of the random error. Allan variance analysis technique has a good performance in analyzing inertial sensor random error, and it is always used to characterize various types of the random error terms. This paper proposes a new method named optimization iterative algorithm based on nonnegative constraint applied to Allan variance analysis technique to estimate parameters of the random error terms. The parameter estimates by this method are nonnegative and optimal, and the estimation process does not have matrix nearly singular issues. Testing with simulation data and the experimental data of a fiber optical gyro, the parameters estimated by the presented method are compared against other excellent methods with good agreement;moreover, the objective function has the minimum value. (C) 2014 COSPAR. Published by Elsevier Ltd. All rights reserved.