Using Clustering Information for Sensor NetworkLocalization

1 Introduction Many wireless sensor network applications require information about the geographiclocation of each sensor node. Besides the typical application of correlating sensor readings with physical locations, approximate geographical localization is also needed formany sensor network applications such as location-aided routing [2], geographic routing [3], geographic routing with imprecise geographic coordinates [4, 5], geographichash tables [6], and for many data aggregation applications