Fleury, Bernard Henri

Pedersen, Claus

Pedersen, Troels

English

We investigate an extension to the probabilistic model of a wireless sensor network (WSN) in a recently proposed variational message passing (VMP) localization algorithm. This extension exploits network topology information to mitigate ambiguities in WSN localization schemes. We derive VMP schemes for direct (1-step) localization and 2-step localization where knowledge on the positions of 2-step neighbours is taken into account. We evaluate the performance of the algorithms in connected WSNs via Monte Carlo simulations. The results show that utilizing position information from sensors with which there is no direct connection improves the position estimates for sensors directly connected to few neighbour sensors. The most significant improvement is observed for sensors of degree two i.e. with two 1-step neighbours. However, further investigations considering more realistic WSNs with decentralized and (partly) centralized settings are required to obtain more conclusive results on the real performance gain achievable by exploiting information on absent connections.We investigate an extension to the probabilisticmodel of a wireless sensor network (WSN) in the variationalmessage passing localization algorithm. This extension exploitsnetwork topology information to mitigate ambiguities in WSNlocalization schemes. In a simulation case study we show that thisextension in some cases improves the location estimates producedby the algorithm. The final version of the paper will presentquantitative results from more extensive investigations that willdocument the extent of this improvement

Exploiting Network Topology Information to Mitigate Ambiguities in VMP Localization

Claus Pedersen

Troels Pedersen

Bernard H. Fleury

Crossref

Exploiting network topology information to mitigate ambiguities in VMP localization

https://vbn.aau.dk/ws/files/61476547/p57_pedersen.pdf

Exploiting Network Topology Information to Mitigate Ambiguities in VMP Localization

Abstract

Similar works

Full text

Available Versions

VBN

Crossref