2010
DOI: 10.1109/tcst.2009.2038485
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The Control System of a Distributed Aperture Imaging Testbed

Abstract: Star-9 is an experimental demonstration of distributed-aperture imaging built at the Lockheed Martin Advanced Technology Center. White light from a scene generator enters an array of nine telescopes and is combined at a focused image plane. Relative aberrations from each telescope are regulated by a control system using phase diversity and active relay mirrors. A Weiner filter is applied to the image, and the resulting angular resolution and image quality are nearly diffraction-limited with the diameter of the… Show more

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“…Phase diversity, one of the potential approaches to address the problem [13], is able to estimate wavefront degradation (including the tip/tilt) with a couple of defocused diversity images and nonlinear optimization. The Star-9 has applied the phase diversity for fine phasing [14]. Yet this technique is limited to heavy computational loads owing to the iteration requirement.…”
Section: Introductionmentioning
confidence: 99%
“…Phase diversity, one of the potential approaches to address the problem [13], is able to estimate wavefront degradation (including the tip/tilt) with a couple of defocused diversity images and nonlinear optimization. The Star-9 has applied the phase diversity for fine phasing [14]. Yet this technique is limited to heavy computational loads owing to the iteration requirement.…”
Section: Introductionmentioning
confidence: 99%