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A detailed analysis of the characteristics of entry-water noise and hydrodynamic noise producedby a high speed body moving into water is given. The properties of the received timing signal which is emitted form a sound source carried by themoving body are discussed.General principles of choosing the parameters,particularly the power ofthe sound signal source and the threshold level of the receiver for detecting the received timing signalin the noise background mainly caused by these two kinds of noise mentioned above are discussed indetail.Finally,under assumed conditions numerical values of the two parameters are estimated.Theresults are supported by experiments.
A detailed analysis of the characteristics of entry-water noise and hydrodynamic noise produced by a high speed body moving into water is given. The properties of the received timing signal which is emitted form a sound source carried by themoving bodies are discussed. General principles of choosing the parameters, particularly the power of the sound signal source and the threshold level of the receiver for detection the received timing signal in the noise background mainly caused by these two kinds of noise mentioned above are discussed indetail. Finally, under assumed conditions numerical values of the two parameters are estimated. The results are supported by experiments.