Contribution
Real-time Framework for SONAR Ocean Simulation
* Presenting author
Abstract:
The development of a digital ocean enables the usage of digital-twin approaches for underwater objects. Such a real-time toolkit includes ship signatures and other underwater sound sources and models reflections at (time-varying) water and seafloor surfaces, as well as on walls in harbors. Targets are characterized by their placement in 3D space, their trajectories, and frequency response to model acoustic wave reflections. Until now, the simulation did not include distributed targets and was mainly emphasizing single-target detection and recognition. In this work, this problem is addressed with a technique that defines the relative positions of co-located sources and simulates each with its own parametrized acoustic signal, such as adding distinct engine and propeller noises to the ship's signature. Implementation of the time-variant convolution with accounting for the multiple co-located noise sources promises to enhance the realism of the target's acoustic signature. The environment settings of the digital ocean for single target response are also compared with the multi-target responses.