Circle based path planning algorithm for localization using mobile anchor in WSN

Many applications require high degree of sensor node to identify their locations in wireless sensor network. Location information is gathered from manual setting or GPS device. Since manual setting requires huge cost of human time, and GPS requires expensive device cost. Both approaches are not applicable for large scale WSN. The mobile anchor node is used to finding the position of unknown location node. The optimal path planning mechanism is evaluated to minimize the time for determining the localization and should increase the accuracy. In proposed system the circle based path planning mechanism can be implemented, because it covers four corners of the sensing field by increasing the diameter of the concentric circles. The sensor node is located at the center of this circle, a single mobile anchor node moves randomly through the sensing field to determine the localization and also detecting the hacker node in WSN.