Print Email Facebook Twitter Underwater Source Localization Using TDOA and FDOA Measurements with Unknown Propagation Speed and Sensor Parameter Errors Title Underwater Source Localization Using TDOA and FDOA Measurements with Unknown Propagation Speed and Sensor Parameter Errors Author Zhang, Bingbing (National University of Defense Technology) Hu, Y. (TU Delft Signal Processing Systems) Wang, Hongying (National University of Defense Technology) Zhuang, Zhaowen (National University of Defense Technology) Date 2018 Abstract Underwater source localization problems are complicated and challenging: a) the sound propagation speed is often unknown and the unpredictable ocean current might lead to the uncertainties of sensor parameters (i.e. position and velocity); b) the underwater acoustic signal travels much slower than the radio one in terrestrial environments, thus resulting into a significantly severe Doppler effect; c) energy-efficient techniques are urgently required and hence in favour of the design with a low computational complexity. Considering these issues, we propose a simple and efficient underwater source localization approach based on time difference of arrival (TDOA) and frequency difference of arrival (FDOA) measurements, which copes with unknown propagation speed and sensor parameter errors. The proposed method mitigates the impact of the Doppler effect for accurately inferring the source parameters (i.e. position and velocity). The Cramér-Rao lower bounds (CRLBs) for this kind of localization are derived and, moreover, the analytical study shows that our method can yield the performance that is very close to the CRLB, particularly under small noise. The numerical results not only confirm the above conclusions but also show that our method outperforms other competing approaches. Subject algebraic solutionCovariance matricesCurrent measurementDoppler effectfrequency difference of arrival (FDOA)Measurement uncertaintyOceansSea measurementssensor node uncertaintysound propagation speed uncertaintytime difference of arrival (TDOA)UncertaintyUnderwater localization To reference this document use: http://resolver.tudelft.nl/uuid:63b115c9-6ec1-40d7-8bb3-33dcc6d4cb10 DOI https://doi.org/10.1109/ACCESS.2018.2852636 ISSN 2169-3536 Source IEEE Access, 6, 36645-36661 Part of collection Institutional Repository Document type journal article Rights © 2018 Bingbing Zhang, Y. Hu, Hongying Wang, Zhaowen Zhuang Files PDF 45734917_08402219.pdf 4.39 MB Close viewer /islandora/object/uuid:63b115c9-6ec1-40d7-8bb3-33dcc6d4cb10/datastream/OBJ/view