Reflective tomography: Images from rangeresolved laser radar measurements

The reconstruction of a 2-D image from a set of 1-D microwave reflective measurements has been studied by others in the radar community (see references contained in Ref. 1). Das and Boerner2 have shown that the reconstruction of a 2- D radar image from 1-D reflective measurements is identical to the problem of determining a 2-D image from a set of 1-D transmission projections. This latter problem has been extensively studied in many fields ranging from medical imaging to radio astronomy. In this paper, we apply a wellknown tomographic reconstruction technique to a series of 1- D range-resolved laser radar measurements to form a 2-D image of a cone. These new results extend methods of radar imaging used at microwave wavelengths into the optical regime.