Details

Autor(en) / Beteiligte

• Wu, Haoran
• Tang, Jinsong
• Zhong, Heping

Titel

A Correction Approach for the Inclined Array of Hydrophones in Synthetic Aperture Sonar

Ist Teil von

• Sensors (Basel, Switzerland), 2018-06, Vol.18 (7), p.2000

Ort / Verlag

Switzerland: MDPI

Erscheinungsjahr

2018

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• A correction approach for the inclined array of hydrophones is proposed to prevent decline of the image quality in SAS. In this approach, the 2-way exact acoustic propagation path of the inclined array is transformed into the sum of a single root term and an offset term, where the single root term is the 2-way ideal propagation path and the offset term contains all errors cause by the inclined array. The correction for the offset term is separated into two steps: phase correction and delay correction. The phase correction is performed on the echo signal of each receiving hydrophone in the 2-D time domain by a phase multiplication and the delay correction is performed on the echo signal of each receiving hydrophone in the range frequency domain by a phase multiplication with a linear function of range frequency at the reference range. Finally, the effectiveness of the proposed approach is examined by the simulation experiments.