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RSS FeedsSensors, Vol. 18, Pages 2000: A Correction Approach for the Inclined Array of Hydrophones in Synthetic Aperture Sonar (Sensors)

 
 

26 june 2018 10:17:02

 
Sensors, Vol. 18, Pages 2000: A Correction Approach for the Inclined Array of Hydrophones in Synthetic Aperture Sonar (Sensors)
 




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.


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28 viewsCategory: Chemistry, Physics
 
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