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3D Underwater Sensor Network Localization

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6 Author(s)
Teymorian, A.Y. ; Dept. of Comput. Sci., George Washington Univ., Washington, DC, USA ; Wei Cheng ; Liran Ma ; Xiuzhen Cheng
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We transform the 3D underwater sensor network (USN) localization problem into its 2D counterpart by employing sensor depth information and a simple projection technique. We first prove that a nondegenerative projection preserves network localizability. We then prove that given a network and a constant k, all of the geometric k-lateration localization methods are equivalent. Based on these results, we design a purely distributed bilateration localization scheme for 3D USNs termed as underwater sensor positioning (USP). Through extensive simulations, we show that USP has the following nice features: (1) improved localization capabilities over existing 3D methods, (2) low storage and computation requirements, (3) predictable and balanced communication overhead, and (4) robustness to errors from the underwater environment.

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Mobile Computing, IEEE Transactions on  (Volume:8 ,  Issue: 12 )