An underwater bistatic positioning system based on an acoustic vector sensor and experimental investigation

摘要

The active detection of underwater targets is an important area of research and has numerous applications. In this paper, a bistatic detection and positioning system using an Acoustic Vector Sensor (AVS) is proposed which employs an improved Matched Filter (MF). The target position is determined using time delay and azimuth estimation. Frequency domain autocorrelation is employed to remove noise and improve detection performance. A direct path signal spatial suppression technique is proposed to decrease the effects of the dominant interference. Numerical simulation and experimental data obtained on a reservoir are used to evaluate the performance of the proposed system and methods. The results obtained show that this system is effective in determining the position of an underwater target. (C) 2020 Elsevier Ltd. All rights reserved.