Passive broadband source localization based on a Riemannian distance with a short vertical array in the deep ocean

Ran Cao; Kunde Yang; Yuanliang Ma; Qiulong Yang; Yang Shi

doi:10.1121/1.5111971

Passive broadband source localization based on a Riemannian distance with a short vertical array in the deep ocean

J Acoust Soc Am. 2019 Jun;145(6):EL567. doi: 10.1121/1.5111971.

Authors

Ran Cao¹, Kunde Yang¹, Yuanliang Ma¹, Qiulong Yang¹, Yang Shi¹

Affiliation

¹ School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, Chinanpucr@mail.nwpu.edu.cn, ykdzym@nwpu.edu.cn, ylma@nwpu.edu.cn, yangqiulong@nwpu.edu.cn, shiyang@ouc.edu.cn.

PMID: 31255125
DOI: 10.1121/1.5111971

Abstract

A passive broadband source localization approach in the deep ocean is proposed based on the coherent matched-field processing combined with a Riemannian distance. The spatial coherence between hydrophones over frequency bandwidth is utilized for eliminating the unknown source spectrum. Three Riemannian distances are introduced for the measurement of the similarity between the data and replica matrices. The experimental results indicate that the proposed processors with a short array can effectively suppress the sidelobe and improve the localization performance. The source localization influenced by the factors such as the aperture, number of hydrophones, and desired bandwidth is also demonstrated.