Path Loss Factor Estimation for RSS-Based Localization Algorithms With Wireless Sensor Networks

The authors address the problem of estimating the path loss factor and its integration in RSS-based localization algorithms with wireless sensor networks. They propose an algorithm that relies on a stochastic characterization of the uncertainties in the propagation model. Due to that the path loss factor is unknown and the localization is only based on RSS measurements whose distances from the beacons to the target are also unknown. This is a problem for which they propose an iterative algorithm which estimates the factors, the locations and the distances.