Imaging into the Seabed

摘要: Field and laboratory studies (presented in Chapter 2) showed the types of acoustic returns from high-frequency low-frequency sensors. These surveys have also shown how data acquisition geometries signal processing can be combined to create a true Acoustic Seabed Interrogator (ASI), resulting set 4 key recommendations. 3 describes this implemented, with earliest ASI prototype, developed by lead author between 1990 1993. The procedures for are presented along field examples, main products favourably compared concurrent Cone-Penetrometer Testing borehole logs. Further developments led moving instrumentation platform, blending low- sensors, generic flow diagram process combine these measurements. next generation Corer™ is details, several information available its volumetric datasets. This introduces concept JYG-Cross processing, use Synthetic Aperture rendering processing. chapter presents Quality Assurance measure quality measurements at all stages particular shallow waters where multiple reflections common. examples regularly used illustrate different achievements.