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Daytime adaptive optics for deep space optical communications

Show simple item record Wilson, Keith Troy, M. Srinivasan, M. Platt, B. Vilnrotter, V. Wright, M. Garkanian, V. Hemmati, H. 2006-04-12T18:23:24Z 2006-04-12T18:23:24Z 2003-12-12
dc.identifier.citation 10th International Space Conference of Pacific-basin Societies, Tokyo, Japan, December 10, 2003. en
dc.identifier.clearanceno 03-2902
dc.description.abstract The deep space optical communications subsystem offers a higher bandwidth communications link in smaller size, lower mass, and lower power consumption subsystem than does RF. To demonstrate the benefit of this technology to deep space communications NASA plans to launch an optical telecommunications package on the 2009 Mars Telecommunications orbiter spacecraft. Current performance goals are 30-Mbps from opposition, and 1-Mbps near conjunction (-3 degrees Sun-Earth-Probe angle). Yet, near conjunction the background noise from the day sky will degrade the performance of the optical link. Spectral and spatial filtering and higher modulation formats can mitigate the effects of background sky. Narrowband spectral filters can result in loss of link margin, and higher modulation formats require higher transmitted peak powers. In contrast, spatial filtering at the receiver has the potential of being lossless while providing the required sky background rejection. Adaptive optics techniques can correct wave front aberrations caused by atmospheric turbulence and enable near-diffraction-limited performance of the receiving telescope. Such performance facilitates spatial filtering, and allows the receiver field-of-view and hence the noise from the sky background to be reduced. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 2630292 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2003. en
dc.subject laser communications en
dc.subject adaptive optics en
dc.subject day-time optical communications en
dc.title Daytime adaptive optics for deep space optical communications en
dc.type Preprint en

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