Low frequency radar targets 3-dimensional imaging using ramp response signatures

Low frequency imaging in radar domain can have applications for stealthy or buried targets. We consider a technique using transient scattering response from a ramp waveform, which is proportional to the profile function of the target, i.e. its transverse cross-sectional area along the line-of-sight, and consequently, gives information about target size, orientation and geometrical shape. Usual 3-dimensional image generation from ramp responses uses approximate limiting surfaces and is limited to single convex objects. We propose here a new algorithm to reconstruct the global shape of any perfectly conducting target from its ramp response signatures.