A novel Doppler shift based technique for measurement of free-swimming fish speed in marine farms using acoustic telemetry tags was developed and evaluated in this study. The proposed method can potentially augment current telemetry systems with a new biologically relevant measurement without significantly changing the size and energy constrained tag-side of the telemetry systems. For speeds in the range of 20cm s-1-110cm s-1 an overall relative rms error of less than 10% in measured speed based on the proposed Doppler method was achieved in the tests conducted at a fully stocked commercial fish cage, with an rms error of 7.85cm s-1 (std. dev. 7.5cm s-1). The study thus demonstrates the feasibility of measuring the swimming speeds of individual free-ranging fish using this method.
CITATION STYLE
Hassan, W., Føre, M., Pedersen, M. O., & Alfredsen, J. A. (2020). A New Method for Measuring Free-Ranging Fish Swimming Speed in Commercial Marine Farms Using Doppler Principle. In IEEE Sensors Journal (Vol. 20, pp. 10220–10227). Institute of Electrical and Electronics Engineers Inc. https://doi.org/10.1109/JSEN.2020.2991294
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