Accuracy Improvement by Boundary Conditions for Inertial Navigation. (7th June 2010)

• Record Type: Journal Article
• Authors: Nieminen, Tuukka; Kangas, Jari; Suuriniemi, Saku; Kettunen, Lauri
• Other Names: Cross Paul Academic Editor.
• Is Part Of: International journal of navigation and observation. Volume 2010(2010)
• Publication Date: 2010-06-07
• Subjects: Navigation -- Periodicals; Remote sensing -- Periodicals; Geographic information systems -- Periodicals; Global Positioning System -- Periodicals; Earth sciences -- Periodicals; Environmental monitoring -- Periodicals; Navigation; Télédétection; Systèmes d'information géographique; GPS; Sciences de la terre; Environnement -- Surveillance; Earth sciences; Environmental monitoring; Geographic information systems; Global Positioning System; Navigation; Remote sensing; Periodicals; Electronic journals; 629.045
• DOI: 10.1155/2010/869127
• Languages: English
• ISSNs: 1687-5990

Abstract

Abstract : The term inertial navigation is often automatically associated with the term initial value problem . However, there are many applications where it is possible to end up with a boundary value problem (BVP) as well. We show that in case of a BVP, the finite element method that incorporates boundary conditions can be efficiently used to compute position and velocity estimates not prone to accumulation of errors. For further accuracy enhancements, a method of combining inertial measurements with additional constraints is proposed. This way, we can model sensor errors, known to limit the accuracy of the system. The capabilities of the proposed methods are demonstrated with real-life examples.