@proceedings{490, keywords = {CNS-0721604}, author = {Akos Ledeczi and Janos Sallai and Peter Volgyesi}, title = {RF Bearing Estimation in Wireless Sensor Networks}, abstract = {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. Measuring the Doppler shift at two known locations provides a bearing estimate to the rotating node. An alternative approach employing a switched antenna array is proposed that provides improved robustness by avoiding moving parts.}, year = {2009}, journal = {Government Microcircuit Application and Critical Technology Conference (GOMACTech 09)}, month = {03/2009}, address = {Orlando, FL}, }