home › event - controlling error propagation in mobile-infrastructure based localization


Controlling error propagation in mobile-infrastructure based localization
Conferences & Talks

The second international workshop on Mobile Entity Localization and Tracking in GPS-less Environments (MELT09)

30 September 2009
Orlando, Florida, USA



Iterative localization is one of the common schemes for obtaining locations of unknown sensor nodes when anchor nodes are relatively sparse in the network. The key idea is for a node to localize itself using its anchor neighbors, and then become an anchor for other unknown neighbors. The process continues until all nodes are localized or no nodes left can be localized. The major problem of the terative localization scheme is that it suffers from the negative effect of error propagation, where sensor noise results in estimation errors which then get accumulated and amplified over localization iterations. This paper proposes a computationally efficient error control mechanism to mitigate the error propagation effect for mobile-infrastructure based localization. In particular, we show how the error can be characterized and controlled in a mobile-assistant localization framework with angle-of-arrival type of sensing modality. Both simulation on a large scale and real experiments on a small scale have been conducted. Results have shown that our error control mechanism achieves comparable location accuracy as global optimization-based localization methods and has the advantage of being much more computationally efficient.



upcoming events   view all 

The Fourth Transformation: How AR & AI Change Everything
Robert Scoble, Shel Israel
27 April 2017 | George E. Pake Auditorium, PARC
PARC Forum  

Next Frontier of AI
Tolga Kurtoglu
3 May 2017 - 4 May 2017 | Istanbul, Turkey
Conferences & Talks  

Tutorial: Printing 3D Functional Objects and Devices
14 May 2017
Conferences & Talks