Compensation for Stochastic Error of Gyros in a Dual-axis Rotational Inertial Navigation System

被引：12
|
作者：
Zheng, Zhichao [1 ]
Han, Songlai [2 ]
Yue, Jin [3 ]
Yuan, Linglong [3 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Optoelect Sci & Engn, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
[2] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China
[3] Huazhong Inst Optoelect Technol, Wuhan 430074, Peoples R China
来源：
JOURNAL OF NAVIGATION | 2016年 / 69卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Inertial Navigation; Inertial Measurement Unit; Position-fix Reset; Stochastic Error;
D O I：
10.1017/S037346331500051X
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
A dual-axis rotational Inertial Navigation System (INS) has received wide attention in recent years because of high performance and low cost. However, some errors of inertial sensors such as stochastic errors are not averaged out automatically during navigation. Therefore a Twice Position-fix Reset (TPR) method is provided to enhance accuracy of a dual-axis rotational INS by compensating stochastic errors. According to characteristics of an azimuth error introduced by stochastic errors of an inertial sensor in the dual-axis rotational INS, both an azimuth error and a radial-position error are much better corrected by the TPR method based on an optimised error propagation equation. As a result, accuracy of the dual-axis rotational INS is prominently enhanced by the TPR method, as is verified by simulations and field tests.
引用
收藏
页码：169 / 182
页数：14
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