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Results of a study demonstrating the feasibility of broadband and speckle-free projective imaging of a complex shaped scattering object in the 6-17 GHz range with centimeter resolution are presented. We show how angular, spectral, and polarization diversities can be combined in the data acquisition process, with a unique target-derived reference technique to access the three-dimensional Fourier space of the scatterer cost-effectively. Image retrieval algorithms, based on the projection slice theorem and knowledge of object symmetry, are utilized in obtaining images of a model aircraft with near optical resolution. The implications for high-resolution three-dimensional tomographic imaging radar networks are discussed.