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23 August 1995 Relocatable array interferometer: imaging of laser-illuminated space targets
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The application of stellar interferometry to the observation of laser illuminated artificial satellites is investigated for a relocatable imaging system. Because of the satellite surface roughness, the light scattered from the surface can be considered spatially incoherent, creating laser speckle at the pupil of the array. The speckle noise is manifested in loss of fringe constrast because of the intensity distribution of speckle is predominately dark for aperture areas small compared to the characteristic speckle dimension. Speckle mitigation by use of aperture diameters larger that the speckle size result, on average, in fringe visibility errors because each aperture resolves the satellite. We quantify these effects in terms of incoherent imaging theory and discuss situations where speckle can be mitigated by the motion of the satellite. A conceptual design of a relocatable interferometer is shown with results of simulations which exclude the effects of the atmosphere.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Victor L. Gamiz, Don M. Payne, Raymond C. Dymale, Gault S. Bowen, and David Stone "Relocatable array interferometer: imaging of laser-illuminated space targets", Proc. SPIE 2566, Advanced Imaging Technologies and Commercial Applications, (23 August 1995);

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