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Hu S.,Beijing University of Posts and Telecommunications | Zhao F.,Beijing University of Posts and Telecommunications | Lu B.,ICTEHI Technology Development Co. | Lu T.,ICTEHI Technology Development Co.
2012 International Conference on Systems and Informatics, ICSAI 2012 | Year: 2012

One of the major issues about location-technique-based servers concerns how to make positioning more accurate. A general solution is to separately explore advanced algorithm on a particular location technique. However, this paper proposes a new concept called Multi-mode positioning which combines several location techniques. After a brief overview of existing technologies, the writer focuses on the function principles of multi-mode positioning system based on Client-Server architecture. The center of a triangle's incircle is used for calculating to get a more accurate positioning result on the server sides. In addition, detailed analysis of relating experimentation conducted by the writers will show the current prospects and benefits of multi-mode location system. © 2012 IEEE. Source


Rui W.,Beijing University of Posts and Telecommunications | Fang Z.,Beijing University of Posts and Telecommunications | Luo H.,CAS Institute of Computing Technology | Bo L.,ICTEHI Technology Development Co. | Tao L.,ICTEHI Technology Development Co.
MLBS'11 - Proceedings of the 1st International Workshop on Mobile Location-Based Service | Year: 2011

The existing localization technology with single mode is limited in accuracy and robustness. To obtain higher accuracy, this paper proposes a novel indoor localization algorithm with WI-FI and Bluetooth. The approach is based on the Bayesian filtering and performs data-level fusion to get the final position estimate. In addition, idea of simulated annealing algorithm is learned into it that makes our algorithm can find the global optimal value in probability. Experimental results demonstrate that the proposed localization algorithm outperforms the single mode localization with accuracy and robustness. © 2011 ACM. Source

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