The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Tracking moving devices with the cricket location system
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Extended Kalman Filter for wireless LAN based indoor positioning
Decision Support Systems
Distributing the Kalman Filter for Large-Scale Systems
IEEE Transactions on Signal Processing - Part I
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This paper addresses the problem of self localization of mobile devices. In particular, each device combines noisy measurements of its absolute position with distance measurements to its neighbors. The communication topology is modeled by a graph. Both static and dynamic graph structures are investigated. The self-localization task is addressed using distributed Kalman Filters. First a filter is designed which uses only locally available measurements for state estimation. Secondly, a data fusion step is added to the filter. This allows the usage of more measurement information available in the network to improve the accuracy. When the graph is dynamic, a larger communication radius is necessary to ensure reliable performance.