Study on Initial Alignment Under Large Misalignment Angle

作     者：Qi Wang Changsong Yang Shaoen Wu 

作者机构：School of Computer and SoftwareNanjing University of Information Science and TechnologyNanjing210044China Jiangsu Engineering Center of Network MonitoringNanjing University of Information Science and TechnologyNanjing210044China Department of Computer ScienceBall State UniversityMuncieUSA School of AutomationNanjing University of Information Science and TechnologyNanjing210044China 

出 版 物：《Journal of Information Hiding and Privacy Protection》 (信息隐藏与隐私保护杂志（英文）)

年 卷 期：2019年第1卷第3期

页      面：95-108页

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：This work is funded by Natural Science Foundation of Jiangsu Province under Grant BK20160955 a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions and Science Research Foundation of Nanjing University of Information Science and Technology under Grant20110430 Open Foundation of Jiangsu Key Laboratory of Meteorological Observation and Information Processing(KDXS1304) Open Foundation of Jiangsu Key Laboratory of Ocean Dynamic Remote Sensing and Acoustics(KHYS1405) 

主　　题：Misalignment error model large misalignment angle Euler platform error angle SINS. 

摘      要：Misalignment angle error model describing the SINS mathematical platform error is presented in this paper following the idea of small misalignment angle error model and large azimuth misalignment angle error *** can be considered that the three misalignment angles are independent of the rotational sequence in the misalignment error model,but not suitable in the large misalignment error *** error angle of Euler platform is used to represent the three misalignment angles from theoretical navigation coordinate system to computational navigation coordinate *** Euler platform error angle is utilized to represent the mathematical platform error and its physical meaning is very *** SINS nonlinear error model is deduced by using the error angle of Euler platform and is simplified under the condition of large azimuth error and small *** simplified results are more comprehensive and accurate than the large azimuth misalignment error *** damping SINS algorithm and its error model are proposed to change the structure of the strapdown inertial navigation algorithm by using the external damping *** accuracy of SINS error model of large Euler platform error angle is simulated,and has strong practicability in initial alignment and is conducive to reducing the amount of calculation.