Reference selection for an active ultrasound wild salmon monitoring system

Abstract

This paper introduces the concept of automatic reference selection for active ultrasound wild salmon monitoring systems in turbulent underwater environments. A general in situ calibration procedure is proposed which allows grate improvements in terms of fish detection, identification and tracking capabilities.

Potential of active ultrasound monitoring systems for jellyfish detection

“…5. In order to avoid any eventual mismatches between the emitted and received acoustic wave (wave deformation induced by either the propagation channel or the conditioning system), the reference selection procedure proposed in [5], [6], [7] has been employed in the final processing algorithm.…”

Active Acoustic Signature Extraction by Machine Learning Data Analysis for Underwater Fish Counters

“…The main goal of this project is to develop multiple acoustic barriers for reliable fish counting in downstream fish passes. In [9], [10], we introduced an Internet of Things (IoT) cost effective 500 kHz acoustic system for counting fishes in passage channels, which operates on the principle of multi-static acoustic antenna [11]- [13]. It was composed of several acoustic barriers: each fish passage will obstruct the acoustic propagation channel between the emitter and the receiver, which makes possible fish monitoring.…”

Experimental Acoustic Data Analysis for Fish Detection using an Active Ultrasound System

“…Each acoustic barrier is composed of a conventional emission-reception ultrasound path that is affected by the passage of any external object [6], [7], [8], [9], [10]. The proper use of this technique relies on two main hypotheses.…”