Acta Metallurgica Sinica(English letters) ›› 2014, Vol. 21 ›› Issue (2): 48-56.doi: 10.1016/S1005-8885(14)60285-5

• Wireless • Previous Articles     Next Articles

Distributed location model and algorithm with position uncertainty

  

  1. Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2013-11-20 Revised:2014-03-12 Online:2014-04-30 Published:2014-04-30
  • Contact: Yu-Long SHI E-mail:shiyulong@bupt.edu.cn
  • Supported by:

    the National Natural Science Foundation of China (61001119), the Beijing Higher Education Young Elite Teacher Project (YETP0429), and the National Hi-Tech Research and Development Program of China (2012AA01A50604).

Abstract:

The localization of multiple mobile terminals (MTs) is an encouraging paradigm of applications in wireless networks. Peer-to-peer communication between MTs facilitates the cooperative localization of multiple MTs. For sake of low complexity and high robustness, investigations often focus on the distributed algorithm in cooperative localization. However, the impact from position uncertainty of cooperative MT lacks of analysis in related works. A new distributed location model, as well as corresponding algorithm, is devised when considering both the distance measurement error and the position uncertainty of MTs, which is more judicious than the traditional model for distributed cooperative localization scenario. In addition, the performance of proposed algorithm is analyzed through Cramér-Rao lower bound (CRLB). Simulations indicate that the algorithm outperforms traditional methods in terms of accuracy and robustness.

Key words:

distributed algorithm, cooperative localization, position uncertainty