Computationally efficient underwater acoustic 2-D source localization with arbitrarily spaced vector hydrophones at unknown locations using the propagator method

  • Authors:

  • Jin He;Zhong Liu

  • Affiliations:

  • Department of Electronic Engineering, Nanjing University of Science & Technology, Nanjing, China 210094;Department of Electronic Engineering, Nanjing University of Science & Technology, Nanjing, China 210094

  • Venue:
  • Multidimensional Systems and Signal Processing
  • Year:
  • 2009

Quantified Score

Hi-index 0.00

Visualization

Abstract

This paper presents a propagator-based algorithm for underwater acoustic 2-D direction-of-arrival (DOA) estimation with arbitrarily spaced vector hydrophones at unknown locations. The proposed algorithm requires only linear operations but no eigen-decomposition or singular value decomposition into the signal and noise subspaces. Comparing with its ESPRIT counterpart (Wong and Zoltowski, IEEE J Oceanic Eng 22:566---575, 1997a), the proposed propagator algorithm has its computational complexity reduced by this ratio: the number of sources to quadruple the number of vector hydrophones. Simulation results show that at high and medium signal-to-noise ratio, the proposed propagator algorithm's estimation accuracy is similar to its ESPRIT counterpart.