Source localization by 2-D root-MUSIC with "scalar triads" of velocity-hydrophones
- 24 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2, 677-680
- https://doi.org/10.1109/mwscas.1996.587831
Abstract
This paper introduces a new and computationally efficient direction finding (DF) algorithm that (1) exploits the velocity vector-field information of impinging wave front (vs. the scalar wavefield model using only pressure-hydrophones), (2) estimates both elevation angles and azimuth angles, (3) requires rooting only two polynomials and no costly iterative searches. This paper successfully adopts the Root-MUSIC algorithm to L-shaped arrays of arrays of co-located but orthogonally oriented velocity hydrophones. Each velocity hydrophone measures one Cartesian component of the acoustic velocity vector-wavefield. In one two-signal scenario, this new algorithm increases estimation accuracy by about 3 folds and lowers the resolution threshold by 25 dB SNR relative to a pressure-hydrophone array of comparable hardware and software complexity.Keywords
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