A novel subspace approach for cooperative localization in wireless sensor networks using range measurements

Authors:
Frankie K. W. Chan;H. C. So;W.-K. Ma
Affiliations:
Department of Electronic Engineering, City University of Hong Kong, Kowloon, Hong Kong;Department of Electronic Engineering, City University of Hong Kong, Kowloon, Hong Kong;Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
Venue:
IEEE Transactions on Signal Processing
Year:
2009

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Abstract

Estimating the positions of sensor nodes is a fundamental and crucial problem in wireless sensor networks. In this paper, three novel subspace methods for node localization in a fully connected network are devised with the use of range measurements. Biases and mean square errors of the sensor node position estimates are also derived. Computer simulations are included to contrast the performance of the proposed algorithms with the conventional subspace positioning method, namely, classical multidimensional scaling, as well as Cramér-Rao lower bound.