DocumentCode :
3288120
Title :
The navigation potential of ground feature tracking for aircraft navigation
Author :
Pachter, M. ; Mutlu, G.
Author_Institution :
Dept. of Electr. & Comput. Eng., Air Force Inst. of Technoly, Wright-Patterson AFB, OH, USA
fYear :
2010
fDate :
June 30 2010-July 2 2010
Firstpage :
3975
Lastpage :
3979
Abstract :
Inertial Navigation System (INS) aiding using bearing - only measurements of stationary ground features is investigated. The objective is to quantify the navigation information obtained by tracking ground features over time. The answer is provided by an analysis of the attendant observability problem. The degree of INS aiding action is determined by the degree of observability provided by the measurement arrangement. The latter is strongly influenced by the nature of the available measurements - in our case, bearing measurements of stationary ground objects - the trajectory of the aircraft, and the length of the measurement interval. It is shown that during wings level flight at constant speed and a fixed altitude, and when one known ground object is tracked, the observability Grammian is rank deficient and thus full INS aiding action is not available. However, if at least two known ground features are simultaneously tracked the observability Grammian is full rank and all the components of the navigation state vector are positively impacted by the external measurements.
Keywords :
aircraft navigation; ground support systems; inertial navigation; observability; target tracking; INS; aircraft navigation; aircraft trajectory; bearing measurement; degree of observability; ground feature tracking; inertial navigation system; measurement interval; observability Grammian; stationary ground objects; Aircraft navigation; Force control; Force measurement; Inertial navigation; Length measurement; Observability; Optical filters; State estimation; Time measurement; Yield estimation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
American Control Conference (ACC), 2010
Conference_Location :
Baltimore, MD
ISSN :
0743-1619
Print_ISBN :
978-1-4244-7426-4
Type :
conf
DOI :
10.1109/ACC.2010.5531219
Filename :
5531219
Link To Document :
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