Fast and accurate ultrasonic 3D localization using the TSaT-MUSIC algorithm

Background: Effective 3D-localization in mobile underwater sensor networks is still an active research topic. Due to the sparse characteristic of underwater sensor networks, AUVs (Autonomous Underwater Vehicles) with precise positioning abilities will benefit cooperative localization. It has important significance to study accurate localization methods. Methods: In this paper, a cooperative and distributed 3D-localization algorithm for sparse underwater sensor networks is proposed. The proposed algorithm combines with the advantages of both recursive location estimation of reference nodes and the outstanding self-positioning ability of mobile AUV. Moreover, our design utilizes MMSE (Minimum Mean Squared Error) based recursive location estimation method in 2D horizontal plane projected from 3D region and then revises positions of un-localized sensor nodes through multiple measurements of Time of Arrival (ToA) with mobile AUVs. Results: Simulation results verify that the proposed cooperative 3D-localization scheme can improve performance in terms of localization coverage ratio, average localization error and localization confidence level. Conclusion: The research can improve localization accuracy and coverage ratio for whole underwater sensor networks.

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Experimental results on the use of the MUSIC algorithm for early breast cancer detection

2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) ◽

10.1109/iceaa.2015.7297283 ◽

2015 ◽

Cited By ~ 2

Author(s):

J. A. Tobon Vasquez ◽

F. Vipiana ◽

G. Dassano ◽

M. R. Casu ◽

M. Vacca ◽

...

Keyword(s):

Breast Cancer ◽

Early Breast Cancer ◽

Cancer Detection ◽

Breast Cancer Detection ◽

Experimental Results ◽

Music Algorithm

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Full snapshot reconstruction in hybrid architecture antenna arrays

EURASIP Journal on Wireless Communications and Networking ◽

10.1186/s13638-020-01863-6 ◽

2020 ◽

Vol 2020 (1) ◽

Author(s):

Maria Trigka ◽

Christos Mavrokefalidis ◽

Kostas Berberidis

Keyword(s):

Antenna Array ◽

Antenna Arrays ◽

Communication Systems ◽

Linear Array ◽

Research Work ◽

Hybrid Architecture ◽

Angle Of Arrival ◽

Music Algorithm ◽

Array Structures ◽

Signal Sources

AbstractIn the context of this research work, we study the so-called problem of full snapshot reconstruction in hybrid antenna array structures that are utilized in mmWave communication systems. It enables the recovery of the snapshots that would have been obtained if a conventional (non-hybrid) uniform linear antenna array was employed. The problem is considered at the receiver side where the hybrid architecture exploits in a novel way the antenna elements of a uniform linear array. To this end, the recommended scheme is properly designed so as to be applicable to overlapping and non-overlapping architectures. Moreover, the full snapshot recoverability is addressed for two cases, namely for time-varying and constant signal sources. Simulation results are also presented to illustrate the consistency between the theoretically predicted behaviors and the simulated results, and the performance of the proposed scheme in terms angle-of-arrival estimation, when compared to the conventional MUSIC algorithm and a recently proposed hybrid version of MUSIC (H-MUSIC).

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