Multiple target DOA estimation with single snapshot in sonar array

Jiani Wu; Changchun Bao

doi:10.1117/12.2559907

31 December 2019 Multiple target DOA estimation with single snapshot in sonar array

Jiani Wu, Changchun Bao

Proceedings Volume 11384, Eleventh International Conference on Signal Processing Systems; 113840L (2019) https://doi.org/10.1117/12.2559907
Event: Eleventh International Conference on Signal Processing Systems, 2019, Chengdu, China

Abstract

In the field of sonar detection, the most commonly used method for direction of arrival (DOA) estimation of underwater targets is the beamforming algorithm. However, due to the Rayleigh limit of resolution, this method cannot effectively resolve multiple targets within one beam. In this paper we propose a DOA estimation method using a single snapshot to resolve two targets in a single beam. We first establish an echo model of two unresolved targets with sonar array. Then we derive an improved monopulse method to estimate the DOA of the targets according to the maximum likelihood estimation principle. Finally, the performance of this method is evaluated by comparison experiments in the cases of varying SNR, inter-target angle separation and inter-target amplitude differences. The simulation results indicate that, method performs very well in many aspects, including smaller estimation error and enhanced adaptation to inter-target amplitude difference.

Citation Download Citation

Jiani Wu and Changchun Bao "Multiple target DOA estimation with single snapshot in sonar array", Proc. SPIE 11384, Eleventh International Conference on Signal Processing Systems, 113840L (31 December 2019); https://doi.org/10.1117/12.2559907

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available