@article{436,
  keywords = {CNS-0721604},
  author = {Akos Ledeczi and Janos Sallai and Peter Volgyesi and Ryan Thibodeaux},
  title = {Differential Bearing Estimation for RF Tags},
  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.},
  year = {2009},
  journal = {EURASIP Journal of Embedded Systems},
  volume = {(in press)},
  month = {xx/2009},
}