Title :
Reducing geometric dilution of precision using ridge regression signal processing
Author_Institution :
Allied Signal Aerosp. Co., Baltimore, MD, USA
fDate :
29 Nov-2 Dec 1988
Abstract :
The authors propose a method for reducing the effects of GDOP (geometric dilution of precision) in position-fix navigation systems. The idea is to incorporate ridge regression into the aircraft navigation signal processor. MSE (mean square error) performance of an ordinary LMS (least mean square) signal processor was compared with one using ridge regression. Computer simulations confirmed the theory that variance inflation caused by GDOP can be measurably reduced by the ridge regression algorithm. The technique is applicable not only to DME/DME (distance measuring equipment) and GPS but applies also to any position-fix navigation aid, e.g. Loran-C, Omega, and JTIDS relative navigation
Keywords :
distance measurement; navigation; signal processing; GPS; Loran-C; Omega; aircraft navigation signal processor; distance measuring equipment; geometric dilution of precision; position-fix navigation systems; ridge regression signal processing; variance inflation; Aircraft navigation; Coordinate measuring machines; Dead reckoning; Extraterrestrial measurements; Geometry; Global Positioning System; Least squares approximation; Satellite navigation systems; Signal processing; Signal processing algorithms;
Conference_Titel :
Position Location and Navigation Symposium, 1988. Record. Navigation into the 21st Century. IEEE PLANS '88., IEEE
Conference_Location :
Orlando, FL
DOI :
10.1109/PLANS.1988.195519
