Magnetometer Modeling and Validation for Tracking Metallic Targets
2014 (English)In: IEEE TRANSACTIONS ON SIGNAL PROCESSING, ISSN 1053-587X, Vol. 62, no 3, 545-556 p.Article in journal (Refereed) Published
With the electromagnetic theory as basis, we present a sensor model for three-axis magnetometers suitable for localization and tracking as required in intelligent transportation systems and security applications. The model depends on a physical magnetic dipole model of the target and its relative position to the sensor. Both point target and extended target models are provided as well as a target orientation dependent model. The suitability of magnetometers for tracking is analyzed in terms of local observability and the Cramér Rao lower bound as a function of the sensor positions in a two sensor scenario. The models are validated with real field test data taken from various road vehicles which indicate excellent localization as well as identification of the magnetic target model suitable for target classification. These sensor models can be combined with a standard motion model and a standard nonlinear filter to track metallic objects in a magnetometer network.
Place, publisher, year, edition, pages
IEEE Signal Processing Society, 2014. Vol. 62, no 3, 545-556 p.
IdentifiersURN: urn:nbn:se:liu:diva-88963DOI: 10.1109/TSP.2013.2274639ISI: 000330771300002OAI: oai:DiVA.org:liu-88963DiVA: diva2:606532
FunderSwedish Foundation for Strategic Research