Abstract

Target localization is a key application in the sensor network context. Of the various conventional methods can be applied, and have been proposed, the range difference (RD) based method is attractive due to improved accuracy and ease of implementation it affords. While the basic concepts of the RD based method can be adapted to the case of sensor networks, the data acquisition and aggregation procedures need to be formulated and characterized subject to the energy constraint. The challenge is to design an efficient algorithm that is economical and still accurate. In this paper, based on range difference localization method, we propose a distributed algorithm which allows the time delay estimation to be carried out at each participating sensor. The acquired data is fused using a sequential least squares scheme which enables the appropriate sensor selection based on the current estimate. The results …

Date

2005

Authors

Chartchai Meesookho, Shrikanth Narayanan

Conference

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005.

Pages

205-209

Publisher

IEEE