Observability of Inertial Navigation System  

作　　者：张婷 汪渤 石永生 

机构地区：[1]School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China [2]School

出　　处：《Journal of Beijing Institute of Technology》2005年第3期269-272,共4页北京理工大学学报（英文版）

摘　　要：To improve the observability of strapdown inertial navigation system and the effectiveness of Kalman filter in the navigation system, the method of estimating the observability is analyzed based on eigenvalues and eigenvectors which are proved to be availabe, on this basis two-position alignment technigue is applied. The simulation shows that two-position alignment really makes the system＇s observability change from being incomplete to being complete, and the test method based on eigenvalues and eigenvectors is available to determine the observability of every state vector.To improve the observability of strapdown inertial navigation system and the effectiveness of Kalman filter in the navigation system, the method of estimating the observability is analyzed based on eigenvalues and eigenvectors which are proved to be availabe, on this basis two-position alignment technigue is applied. The simulation shows that two-position alignment really makes the system＇s observability change from being incomplete to being complete, and the test method based on eigenvalues and eigenvectors is available to determine the observability of every state vector.

关 键 词：OBSERVABILITY two-position alignment EIGENVALUES EIGENVECTOR 

分 类 号：V249.322[航空宇航科学与技术—飞行器设计]