NLOS identification using a hybrid ToA-signal strength algorithm for underwater acoustic localization

Roee Diamant, Hwee Pink Tan, Lutz Lampe

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The existence of obstacles in harbors or near shore environments leads to Non-Line-Of-Sight (NLOS) links between two underwater acoustic communication (UWAC) nodes. That is, only echoes of the transmitted signal arrive at the receiving node. Mistaking the first (strong) echo as a Line-Of-sight (LOS) measurement and using it for ranging causes significant degradation of the accuracy level of UWAC-based localization. In this paper, we propose a solution for the NLOS identification problem in underwater acoustic localization. Results from both extensive simulations and sea trial experiments confirm our approach and demonstrate a high detection rate of NLOS measurements.

Original languageEnglish
Title of host publicationMTS/IEEE Seattle, OCEANS 2010
StatePublished - 2010
Externally publishedYes
EventMTS/IEEE Seattle, OCEANS 2010 - Seattle, WA, United States
Duration: 20 Sep 201023 Sep 2010

Publication series

NameMTS/IEEE Seattle, OCEANS 2010


ConferenceMTS/IEEE Seattle, OCEANS 2010
Country/TerritoryUnited States
CitySeattle, WA

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Ocean Engineering

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