An Acoustic Time-Delay Meter

Abstract

An FPGA-based acoustic time-delay meter with the post-detection correlation processing of pseudo-noise signals is proposed. The measurement method is based on the real-time computation of the mutual correlation function between the reference signal that follows the modulation law and the received signal. The experimental results obtained using a prototype of the developed system are presented. The results validated the viability of the developed software and hardware solutions as applied to acoustic-, radio-, and hydroacoustic-location systems.