Asymmetrical round trip based synchronization-free localization in large-scale underwater sensor networks

Bin Liu, Hongyang Chen, Ziguo Zhong, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

78 Scopus citations


Underwater sensor networks (UWSNs) have been proposed for many location-dependent applications such as oceanographic data collection, pollution monitoring, mine reconnaissance, etc. Accurate node localization plays an important role in realizing the potential gains of these applications. Although many localization algorithms have been proposed for terrestrial sensor networks in recent years, it is not feasible to directly use these algorithms in UWSNs since UWSNs lack a fast and reliable communication channel. Further, due to their slow convergence speeds and high communication overhead, distributed localization algorithms designed for small-scale UWSNs are not practical for large-scale underwater sensor systems. To achieve accurate and energy efficient node localization in large-scale UWSNs, an asymmetrical round trip based localization (ARTL) algorithm is proposed in this paper. This algorithm has low computational complexity and excellent scalability. Without time synchronization, this algorithm can achieve highly accurate ranging in large-scale UWSNs. Simulation results demonstrate the effectiveness of our design in terms of both localization accuracy and energy consumption.

Original languageEnglish (US)
Article number5581198
Pages (from-to)3532-3542
Number of pages11
JournalIEEE Transactions on Wireless Communications
Issue number11
StatePublished - Nov 2010

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


  • Large-scale underwater sensor networks
  • asymmetrical round trip
  • synchronization-free localization


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