2025_programme: Target Echo Strength Calculation for a Moving Source Using Time-Dependent Physical Optics

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  • Day: June 16, Monday
      Location / Time: D. CHLOE at 12:40-13:00
  • Last minutes changes: Cancelled.
  • Session: 17. Target Echo Strength – Measurements and Modelling
    Organiser(s): David Nunn 
    Chairperson(s): David Nunn 
  • Lecture: Target Echo Strength Calculation for a Moving Source Using Time-Dependent Physical Optics
    Paper ID: 2218
    Author(s): Asaf Kor, Amir Boag, Lea Beilkin
    Presenter: Lea Beilkin
    Abstract: We examine the problem of calculating the echo strength of a stationary target in response to a moving source in three-dimensional space. The target is assumed to be sufficiently smooth and large compared to the wavelength, allowing us to apply the physical optics approximation to model the wave scattering. However, due to the motion of the source, we do not use the more conventional frequency-domain physical optics method. Instead, we develop a time-domain variant of this approach, explicitly accounting for the source motion. Our study focuses on the near-field regime, where source motion induces a complex wave field beyond a simple Doppler effect. The proposed algorithm accommodates arbitrary source maneuvers, high source velocities relative to the speed of sound, and emission by the source of arbitrary shaped signals. Monostatic and bi-static detection scenarios are considered.
  • Corresponding author: Dr Lea Beilkin
    Affiliation: Tel Aviv University
    Country: Israel

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