Geometric diversity versus frequency diversity an imaging example

Abstract

Introduction In classical radar, frequency diversity offers one method of obtaining additional information about targets. With the most basic form of frequency diversity, namely increased bandwidth, high range resolution is afforded to the user. Geometric diversity can also offer the potential for increased resolution, and is the multi-static dual to frequency diversity (increased bandwidth) in classical mono-static radar. In the extreme case, 360 degrees of geometric diversity (tomography) offers sub-wavelength resolution, even under the monochromatic assumption.