Radar scattering: A time-frequency perspective

Time-frequency analysis is used to study electromagnetic scattering from canonical objects leading to the detection, localization and extraction of response features that result from the object's physical attributes. The time-frequency analysis techniques are motivated by signal representation in phase space, and are formulated using the Bargman transform. Bargman transform techniques allow the phase space to be parametrically represented in terms of complex polynomials, and elliptical filters can be constructed to crop selected areas of the phase plane. The filters are applied to the scattering from spheres and thin wires, and the prominent scattering features are identified and extracted.