Efficient underwater acoustical localization method based on time difference and bearing measurements

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dc.contributor.authorZhang, Liang
dc.contributor.authorZhang, Tao
dc.contributor.authorShin, Hyo-Sang
dc.contributor.authorXu, Xiang
dc.date.accessioned2021-03-31T10:35:06Z
dc.date.available2021-03-31T10:35:06Z
dc.date.issued2020-12-16
dc.description.abstractThis article addresses the underwater acoustical localization problem by using the time-difference-of-arrival (TDOA) and bearing-angle-of-arrival (BAOA) measurements. For the underwater acoustic equipment, such as the ultrashort baseline system (USBL), whose bearing measurements are different from the traditional angle-of-arrival (AOA) model, a closed-form solution for the hybrid TDOA/BAOA-based source localization problem is developed. However, the solution suffers from the measurement noise and cannot achieve the Cramer–Rao lower bound (CRLB) performance in the case of large measurement noise. Thus, an iterative constrained weighted least-squares method is presented to further minimize the error in the case of large noise. The CRLB for hybrid TDOA/BAOA source localization is analyzed, and the solution is proved to achieve the CRLB performance. Numerical simulations and field tests demonstrate that the proposed method outperforms the traditional methods in terms of estimation bias and accuracy. It can achieve the CRLB performance better.en_UK
dc.identifier.citationZhang L, Zhang T, Shin H-S, Xu X. (2021) Efficient underwater acoustical localization method based on time difference and bearing measurements. IEEE Transactions on Instrumentation and Measurement, Volume 70, 2021, Article number 8501316en_UK
dc.identifier.issn0018-9456
dc.identifier.urihttps://doi.org/10.1109/TIM.2020.3045193
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16526
dc.language.isoenen_UK
dc.publisherIEEEen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectultrashort baseline (USBL)en_UK
dc.subjecttime difference of arrival (TDOA)en_UK
dc.subjectiterative constrained weighted least squaresen_UK
dc.subjectCramer–Rao lower bound (CRLB)en_UK
dc.subjectBearing angle of arrival (BAOA)en_UK
dc.titleEfficient underwater acoustical localization method based on time difference and bearing measurementsen_UK
dc.typeArticleen_UK

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