Ultrasonic imaging in noisy environment

Often times fossils are found buried within rocks of similar composition to the fossil. Ultrasonic imaging is becoming a popular form of nondestructive testing. The presentation covers techniques for imaging a fossil through nondestructive testing in three dimensions without risking damage to the fossil by removing extraneous material. The lecture begins with an illustration of immersion testing that uses longitudinal transducers to construct images of objects buried within a noisy environment of similar composition. Preliminary results give the location and shape of an object buried under a homogeneous layer. The first step to attaining this goal is to merely locate an object buried in a noisy debris field. A single sensor is all that is required to locate an object; however, two sensors allow the object’s position to be triangulated. Techniques for using single and multiple sensors are investigated to improve the search and imaging algorithms. The lecture continues with an in‐depth discussion of the MAT...