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

作者：Wu, Haoran; Tang, Jinsong^*; Zhong, Heping

来源：Sensors (Switzerland), 2018, 18(7): 2000.

DOI：10.3390/s18072000

• synthetic aperture sonar
• the array of hydrophones
• yaw
• pitch

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.

• 出版日期2018-7
• 单位中国人民解放军海军工程大学