Acquisition and pointing for a Mars optical access link

Regehr, M. W.; Kovalik, Joseph; Biswas, Abhijit

doi:10.1109/aero.2009.4839379

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…The background flux in a Mars access link scenario will be greater when the LT is on the sunlit side of Mars, but much of this higher flux will be blocked by a narrow-band optical filter, which we did not use in our demonstration. Reference [4] reports initial experimental results using a spectral filter with a fish-eye lens.…”

Section: Discussionmentioning

confidence: 99%

“…Recently we reported on analysis, transceiver prototyping and link emulation for Mars optical access links, that can improve data return to at least 90 Gb/sol, nearly two orders of magnitude greater than state-of-the art UHF systems [4]. Optical access links can easily boost the data return relative to currently used UHF systems by 1 to 2 orders of magnitude.…”

Section: Introductionmentioning

confidence: 98%

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Autonomous access links using laser communications

et al. 2009

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We have validated an autonomous acquisition scheme that is critical for achieving data transfer over proximity links with ranges up to a few thousand kilometers. The sun-illuminated International Space Station (ISS) against a dark sky background during terminator passes over Southern California was used to validate the autonomous acquisition and tracking scheme. A root mean square (rms) accuracy of 83 μrad was achieved.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Autonomous access links using laser communications

et al. 2009

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“…Acquisition of laser beams in the presence of daylight background but without direct Sun illumination of the fish-eye lens was verified next using a static point-to-point links [14]. The wide-field acquisition camera in this case was customized to provide a wide-field and spectral filtering with a band pass of 2 nm.…”

Section: A Wide-field Of View Acquisitionmentioning

confidence: 99%

Future planetary optical access links

Biswas

Kovalik

Regehr

2011

2011 International Conference on Space Optical Systems and Applications (ICSOS)

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A note on two Roman sepulchral reliefs

Strong¹

1914

J. Rom. Stud.

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Few people probably have noticed a Roman sepulchral slab with the portrait-busts of a man and a woman (plate XXIV), which is embedded in the wall of the Hall of Busts at the British Museum, just above two portraits of Tiberius (nos. 1830, 1881). It was transferred to its present more dignified position within the last five years, after a period of inglorious seclusion in one of the museum basements. The only modern publication of it appears to be that in a little book called Römische Kultur im Bilde, by Dr. Hans Lamer, published at Leipzig in 1910. His plate (no. cxxviii) is taken from a photograph, the source of which is said to be unknown.

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Acquisition and pointing for a Mars optical access link

Cited by 3 publications

References 8 publications

Autonomous access links using laser communications

Autonomous access links using laser communications

Future planetary optical access links

A note on two Roman sepulchral reliefs

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