A novel hybrid localization system combining hexagon-based algorithm with mobile anchor

Localization is an important process in deploying ad-hoc wireless sensor networks. Several localization algorithms have been developed. However, they do not achieve satisfactory performance on irregular networks. In this paper, we present a localization algorithm based on an idea of growing local maps. This paper presents an ongoing work on a localization mechanism applied to wireless sensor networks. This mechanism can cooperate with hexagon method and trilateration and dynamic robot node to estimate the coordinates of some unknown nodes. It can estimate the sensor nodes that have no GPS with some other nodes that have GPS devices. Thereafter, we can obtain more unknown nodes with some estimated nodes. It decreases the cost that localization tracking of wireless sensor devices.