2025_programme: Active Sonar Performance Modeling in the Time Domain

• Day: June 19, Thursday
    Location / Time: B. ERATO at 12:20-12:40
• Last minutes changes: -
• Session: 16. Sonar performance modeling and verification: Active and passive sonar
  Organiser(s): Mathieu Colin, Kevin Heaney
  Chairperson(s): Kevin Heaney, Victor Oppeneer
• Lecture: Active Sonar Performance Modeling in the Time Domain
  Paper ID: 2335
  Author(s): Kevin Heaney
  Presenter: Kevin Heaney
  Abstract: Active anti-submarine warfare (A-ASW) sonar performance computation is more complex than passive for two reasons. Two way propagation is required for the target echo (rather than 1 way) and reverberation from the surface, volume and seafloor, must be computed to estimate the noise. This makes the dimension of the propagation problem at least 1 order larger than the passive problem. Travel time, in order to place reverb and echo in the same time bins must be tracked. Most A-ASW (including mine) bin the times and bearings of the signal and noise and do an SNR over a small bin. The computations are done at a single frequency. In this paper, we present a methodology for computing the full time series of an active sonar, including direct path, reverberation, wind-wave noise and the target echo. Simulations of this calibre are required if we are going to evaluate systems performance dependent upon signal processing, or are going to feed large training datasets to Machine Learning (ML) algorithms.
• Corresponding author: Dr Kevin Heaney
  Affiliation: Applied Ocean Sciences
  Country: United States