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• K. Yu is with the School of Surveying and Spatial Information Systems, University of New South Wales, Sydney, NSW 2052, Australia. E-mail: email@example.com.
• E. Dutkiewicz is with the Department of Electronic Engineering, Macquarie University, E6A, North Ryde, NSW 2109, Australia. E-mail: firstname.lastname@example.org.
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Digital Object Identifier no. 10.1109/TMC.2012.35.