Publication Type
Journal Article
Version
submittedVersion
Publication Date
10-2011
Abstract
Underwater Wireless Sensor Networks (UWSNs) are expected to support a variety of civilian and military applications. Sensed data can only be interpreted meaningfully when referenced to the location of the sensor, making localization an important problem. While global positioning system (GPS) receivers are commonly used in terrestrial WSNs to achieve this, this is infeasible in UWSNs as GPS signals do not propagate through water. Acoustic communications is the most promising mode of communication underwater. However, underwater acoustic channels are characterized by harsh physical layer conditions with low bandwidth, high propagation delay and high bit error rate. Moreover, the variable speed of sound and the non-negligible node mobility due to water currents pose a unique set of challenges for localization in UWSNs. In this paper, we provide a survey of techniques and challenges in localization specifically for UWSNs. We categorize them into (i) range-based vs. range-free techniques; (ii) techniques that rely on static reference nodes vs. those who also rely on mobile reference nodes, and (iii) single-stage vs. multi-stage schemes. We compare the schemes in terms of localization speed, accuracy, coverage and communication costs. Finally, we provide an outlook on the challenges that should be, but have yet been, addressed.
Keywords
Underwater localization; Acoustic communications; Underwater sensor networks
Discipline
Computer Engineering | Software Engineering
Research Areas
Software and Cyber-Physical Systems
Publication
Ocean Engineering
Volume
38
Issue
14
First Page
1663
Last Page
1676
ISSN
0029-8018
Identifier
10.1016/j.oceaneng.2011.07.017
Publisher
Elsevier
Citation
TAN, Hwee-Pink; DIAMANT, Roee; SEAH, Winston K. G.; and WALDMEYER, Marc.
A Survey of Techniques and Challenges in Underwater Localization. (2011). Ocean Engineering. 38, (14), 1663-1676.
Available at: https://ink.library.smu.edu.sg/sis_research/2956
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
http://dx.doi.org/10.1016/j.oceaneng.2011.07.017