Subspace intersection method of high-resolution bearing estimation in shallow ocean

Authors:
Sondur Lakshmipathi;G. V. Anand
Affiliations:
Department of Electrical Communication Engineering, Indian Institute of Science, Bangalore 560 012, India;Department of Electrical Communication Engineering, Indian Institute of Science, Bangalore 560 012, India
Venue:
Signal Processing
Year:
2004

Citing 0
Cited 3

A fast high-resolution method for bearing estimation in shallow ocean

Multidimensional Systems and Signal Processing
Subspace intersection method of high-resolution bearing estimation in shallow ocean using acoustic vector sensors

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A note on "A fast high-resolution method for bearing estimation in shallow ocean"

Multidimensional Systems and Signal Processing

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Abstract

Plane-wave DOA estimation techniques yield biased estimates of source bearing angles in the ocean due to the multimode nature of acoustic propagation in an oceanic waveguide. Bearing estimation using matched field processing requires either a computationally expensive three-dimensional search or a priori knowledge of the source ranges and depths. A new subspace-based high-resolution bearing estimation technique which does not have any of these drawbacks is presented in this paper.