Doppler Location Algorithm for Wireless Sensor Networks

摘要

The research interest in the cooperation of tiny devices to monitor several kinds of magnitudes or the different events that may arise in a particular wide area has increased in the last years. This cooperation yields new - and robust - communication algorithms so that the information can flow from the sensors to a data sink, where it will be further processed. All these tasks can be simplified if the location of the nodes where known. Although there are positioning systems, which achieve a good ac-quiracy (such as GPS), they cannot be used in any environment (indoors or in places with dense foliage). This paper presents a location algorithm based on the Doppler effect Thus, a wireless sensor network could locate and track a passing-by object. Unlike other Doppler location algorithms, the velocity of the emitter is supposed to be unknown and is estimated at the same time as its position.