Unified Wireless Sensor Node and Target Event Localization
It is important to evaluate sensor node position uncertainty for robustness required applications.This paper uses proximity information to construct a constraint set whose decision variables are node position.The feasible area of sensor node position is then computed through a projection method.A distributed algorithm is given to approximate this irregular area with simple and expressive polygon.Target event could also be positioned with the consideration of node position uncertainty.Simulation results show that localizing target event brings position refinements to sensor nodes.