Distributed localization using acoustic Doppler
2015 (English)In: Signal Processing, ISSN 0165-1684, E-ISSN 1872-7557, Vol. 107, 43-53 p.Article in journal (Refereed) Published
It is well-known that the motion of an acoustic source can be estimated from Doppler shift observations. It is however not obvious how to design a sensor network to efficiently deliver the localization service. In this work a rather simplistic motion model is proposed that is aimed at sensor networks with realistic numbersof sensor nodes. It is also described how to efficiently solve the associated least squares optimization problem by Gauss-Newton variable projection techniques, and how to initiate the numerical search from simple features extracted from the observed frequency series. The methods are evaluated by Monte Carlo simulations and demonstrated on real data by localizing an all-terrain vehicle. Itis concluded that the processing components included are fairly mature for practical implementations in sensor networks.
Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 107, 43-53 p.
Acoustic tracking, Sensor network, Acoustic Doppler, Localization, Variable projection
IdentifiersURN: urn:nbn:se:liu:diva-113503DOI: 10.1016/j.sigpro.2014.06.031ISI: 000347759500005OAI: oai:DiVA.org:liu-113503DiVA: diva2:782101
FunderSwedish Foundation for Strategic Research , RIT10-0051