FPGA-based adaptive noise cancellation for ultrasonic NDE application

Adaptive filter has been widely used in different applications for interference cancellation, predication, inverse modeling and identifications. In this paper, Field Programmable Gate Array (FPGA)-based adaptive noise cancellation is studied for adaptive filtering in ultrasonic non-destructive evaluation. Simulation and experimental results showed that backscattered noise from microstructures inside material can be efficiently reduced by adaptive filter. Additionally, four different architectures of filter realization on FPGA are discussed and compared. This type of study could have a broad range of applications such as target detection, object localization and pattern recognition.