17 May 2016 Using optical interferometry for GEO satellites imaging: an update
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We describe multi-baseline observations of a geostationary satellite using the Navy Precision Optical Interferometer (NPOI) during the glint season of March 2015. We succeeded in detecting DirecTV-7S with an interferometer baseline length of 8.8 m on two nights, with a brief simultaneous detection at 9.8 m baseline length on the second night. These baseline lengths correspond to a resolution of ~4 m at geostationary altitude. This is the first multiple-baseline interferometric detection of a satellite.
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Sergio R. Restaino, Sergio R. Restaino, J. Thomas Armstrong, J. Thomas Armstrong, Ellyn K. Baines, Ellyn K. Baines, Henrique R. Schmitt, Henrique R. Schmitt, James H. Clark, James H. Clark, } "Using optical interferometry for GEO satellites imaging: an update", Proc. SPIE 9836, Micro- and Nanotechnology Sensors, Systems, and Applications VIII, 983603 (17 May 2016); doi: 10.1117/12.2224750; https://doi.org/10.1117/12.2224750

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