Information Coupling in Cooperative Localization

Cooperative network localization with high-accuracy and environment-independent reliability will enable a myriad of important applications. However, distributed implementations of cooperative algorithms currently do not account for the correlation of inferred nodes´ positions. This letter investigates such correlation in cooperative localization in terms of Fisher information, leading to the concept of information coupling. To characterize its behavior, we focus on the simplest non-trivial case and derive the expressions for information coupling.