Detection of Riverine Fish Using an Adaptive Eigen Filter Directional Spectral Estimation Technique

The advent of fast cheap microprocessor devices has meant that digital signal processing may be the most realistic technique to provide a method of detecting the amount of fish that are ascending and descending a river. This information is invaluable to the fisheries manager. The paper describes a technique which could be the basis of a system which would afford us all the data necessary to design a practical system for use in Scottish rivers. A simulation of the technique has been carried out to determine feasibility.