Title :
Local observability matrix and its application to observability analyses
Author :
Chen, Zhe ; Jiang, Ke ; Hung, James C.
Author_Institution :
Dept. of Autom. Control, Beijing Univ. of Aeronaut. & Astronaut., China
Abstract :
A local observability matrix for a linear time-varying system is introduced. The matrix is useful for observability analysis; it is much easier to use than the usual observability grammian for linear time-varying systems. The matrix is applied to a terrain-aided inertial navigation system to reveal the observability of the system in terms of the nature of the terrain. Results of a simulated covariance analysis are presented and discussed
Keywords :
State estimation; inertial navigation; linear systems; matrix algebra; state estimation; time-varying systems; linear time-varying system; local observability matrix; observability analyses; simulated covariance analysis; terrain-aided inertial navigation system; Accelerometers; Aircraft navigation; Application software; Computer errors; Extraterrestrial measurements; Inertial navigation; Observability; Sea measurements; Sensor systems; Time varying systems;
Conference_Titel :
Industrial Electronics Society, 1990. IECON '90., 16th Annual Conference of IEEE
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-87942-600-4
DOI :
10.1109/IECON.1990.149118
