Localization Based on Observations Linear in Log Range
2008 (English)In: Proceedings of the 17th IFAC World Congress, 2008, 10252-10257 p.Conference paper (Refereed)
AbstractReceived signal strength (RSS) is used in wireless networks as a ranging measurement for positioning and localization services. This contribution studies conceptually different networks, where neither transmitted power or the path decay constant can be assumed to be known. The application in mind is a rapidly deployed network consisting of a number of sensor nodes with low-bandwidth communication, each node consisting of a number of sensor types measuring RSS. Typical sensors measure acoustic, seismic, magnetic and IR power emitted from a target. First, a model linear in the unknown nuisance parameters (transmitted power and path loss constant) is presented and validated from real data. Then, the separable least squares principle is applied to the non-linear least squares (NLS) cost function, after which a cost function of only the unknown position is obtained. Results from field trials are presented to validate the method.
Place, publisher, year, edition, pages
2008. 10252-10257 p.
Sensor networks, Estimation, Kalman Filtering
Engineering and Technology Control Engineering
IdentifiersURN: urn:nbn:se:liu:diva-89047DOI: 10.3182/20080706-5-KR-1001.01735ISBN: 978-3-902661-00-5OAI: oai:DiVA.org:liu-89047DiVA: diva2:606865
17th IFAC World Congress, Seoul, South Korea, July, 2008