Fourier telescopy, which can be employed in the high-resolution imaging of orbiting satellites from earth-based sites, is usually applied to objects that can be modeled as planar. Tomographic principles, however, can be exploited to extend the realm of application to 3-D objects. Two regimes are considered in this brief introduction to the subject. One is based on geometrical optics projections, much as in computed tomography (CT). The other regime requires careful attention to the effects of diffraction by the object.
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