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Real-Time, Deep Synthetic Aperture Sonar (SAS) Autofocus

Real-Time, Deep Synthetic Aperture Sonar (SAS) Autofocus

Synthetic aperture sonar (SAS) requires precise time-of-flight measurements of the transmitted/received waveform to produce well-focused imagery. It is not uncommon for errors in these measurements to be present resulting in image defocusing. To overcome this, an autofocus algorithm is employed as a post-processing step after image reconstruction to improve image …