Exploiting low frequency resonance modes and scattering features to classify a submarine

15 Apr 2026
Theatre 3
  • This paper will outline how low frequency resonance within hollow steel structures can be clearly isolated within spectrograms and how this varies from natural specular reflectors. 
  • Using simulated data, this paper will look to demonstrate the feasibility of exploiting this phenomenon to accurately distinguish between man-made and natural objects within the active sonar returns. 
  • Using a simple machine learning model, this paper will demonstrate how this process may be automated to give a quick indication to a sonar operator whether the object seen is a man-made submarine.
Chairperson
Mirko Stifani
Mirko Stifani, Chief Technology Officer - (Fincantieri NexTech)
Speakers
Tom Hopkins-Flanagan
Tom Hopkins-Flanagan, Senior Scientific Analyst - Drumgrange Ltd