  We propose a localization algorithm for wireless sensor networks, which is
simple in design, does not involve significant overhead and yet provides
acceptable position estimates of sensor nodes. The algorithm uses settled nodes
as beacon nodes so as to increase the number of beacon nodes. The algorithm is
range free and does not need any additional piece of hardware for ranging. It
also does not involve any significant communication overhead for localization.
The simulation and results show that good localization accuracy is achieved for
outdoor environments.
