Physics
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spie.7453e..28s&link_type=abstract
Infrared Spaceborne Remote Sensing and Instrumentation XVII. Edited by Strojnik, Marija. Proceedings of the SPIE, Volume 7453,
Physics
Scientific paper
We analyze the power collection ability of a multiple aperture configuration for geometry where the source and the collector lateral distances are enormously smaller than their separation, as in the case of detection of a nearby planetary system from the Earth or its vicinity. We show that the size, shape, orientation of, or spacing between the individual apertures in a multiple aperture configuration does not impact the amount of power originating at the planet or the star, and therefore does not reduce the signal-to-noise ratio. The collection of power from the star, the planet, and the debris is increased in the same linear fashion by increasing the projected area of all apertures, as by increasing the signal-collection time. In addition, we find that the phase delay between apertures is not of importance. Finally, we demonstrate that no planet is sufficiently close to its star that its image would fall on the zero incidance pattern, according to the laws of Keplerian motion.
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