Fish Activity Model Based on Tail Swing Frequency
鱼体尾频运动模型研究

The fish motion essentially reflects the current state of water quality, so it is necessary to study the methods of obtaining the real-time dynamic motion characters of fish body in the field of biological water monitoring. Based on the analysis of fish locomotion model, the paper presents a fish activity model using the frequency of tail swing, which acquires some kinematical parameters, i.e., tail frequency, swimming velocity, acceleration and so on. The results show that the model,which can be used as the theoretical basis of the application, represents the fish motion activity accurately and efficiently in the biological water monitoring.