@article {4066,
	title = {Differential Bearing Estimation for RF Tags},
	journal = {EURASIP Journal of Embedded Systems},
	volume = {(in press)},
	year = {2009},
	month = {xx/2009},
	abstract = {Fusing spatially distributed observations in wireless sensor networks or asset tracking in a shipyard are just two example applications where the location of radio nodes needs to be known. Localization and tracking of wireless nodes have been an active research area, yet a universal solution has not emerged so far. This paper introduces a novel method for bearing estimation based on a rotating antenna generating a Doppler shifted RF signal. The small frequency change can be measured even on low cost resource constrained nodes using a radio interferometric technique introduced previously. Bearing information between anchors nodes at known locations and RF tags at unknown positions can be derived. A few such measurements provide enough information to enable accurate node localization.},
	keywords = {CNS-0721604},
	author = {Ledeczi, Akos and Sallai, Janos and Volgyesi, Peter and Thibodeaux, Ryan}
}
