Architectural Design Of A Ground-Based Deep-Space Optical Reception Antenna

Kerr, Edwin L.

doi:10.1117/12.951701

Cited by 4 publications

(4 citation statements)

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“…The solar spectrum clearly indicates the solar Fraunhofer lines at 516.4521 nm, 517.0414 nm and 518.2386 nm. The frequency shift of the observed lines with respect to the literature is supposed to be affected synthetically by the imperfect calibration for the spectrometer and the effect of local Doppler shift due to the Earth revolution about the sun [14]. More hyperfine structure from various absorption and scatters in both earth and solar atmosphere are also observed in the figure.…”

Section: Methodssupporting

confidence: 49%

“…Fraunhofer lines produce strong absorptions and fingerprint information of sunlight. Therefore, those lines have been studied for free-space laser communications and passive optical sensing techniques [14,15]. A wavelength lying within a Fraunhofer line can carry optical communications with reduced interference from the solar background.…”

Section: Introductionmentioning

confidence: 99%

“…A wavelength lying within a Fraunhofer line can carry optical communications with reduced interference from the solar background. The tunable source laser and the Fraunhofer filter were proposed to match the Doppler shifts of the source and background [14]. A free-space Quantum key distribution system for Earth-space data link was described that lies within an H-alpha Fraunhofer line at 656.28 nm, to carry the signal with reduced interference from sunlight [15].…”

Section: Introductionmentioning

confidence: 99%

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Fraunhofer Lidar Prototype in the Green Spectral Region for Atmospheric Boundary Layer Observations

Wu¹,

Song²,

Liu³

2013

Remote Sensing

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A lidar detects atmospheric parameters by transmitting laser pulse to the atmosphere and receiving the backscattering signals from molecules and aerosol particles. Because of the small backscattering cross section, a lidar usually uses the high sensitive photomultiplier and avalanche photodiode as detector and uses photon counting technology for collection of weak backscatter signals. Photon Counting enables the capturing of extremely weak lidar return from long distance, throughout dark background, by a long time accumulation. Because of the strong solar background, the signal-to-noise ratio of lidar during daytime could be greatly restricted, especially for the lidar operating at visible wavelengths where solar background is prominent. Narrow band-pass filters must therefore be installed in order to isolate solar background noise at wavelengths close to that of the lidar receiving channel, whereas the background light in superposition with signal spectrum, limits an effective margin for signal-to-noise ratio (SNR) improvement. This work describes a lidar prototype operating at the Fraunhofer lines, the invisible band of solar spectrum, to achieve photon counting under intense solar background. The photon counting lidar prototype in Fraunhofer lines devised was used to observe the atmospheric boundary layer. The SNR was improved 2-3 times by operating the lidar at the wavelength in solar dark lines. The aerosol extinctions illustrate the vertical structures of aerosol in the atmospheric boundary over Qingdao suburban during summer 2011.

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Section: Methodssupporting

confidence: 49%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fraunhofer Lidar Prototype in the Green Spectral Region for Atmospheric Boundary Layer Observations

Wu¹,

Song²,

Liu³

2013

Remote Sensing

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“…This study resulted in the selection of a 10-m-diameter telescope, using a segmented primary aperture with a 2-pm surface accuracy. A novel integral sunshield, which permits small (< 10 deg) Sun-Earth-probe viewing while precluding direct sunlight from striking the primary mirror, was also formulated and analyzed [19]. Construction of Facilities proposal packages have been assembled during the past two years and design activities in the Ground Antennas and Facilities Engineering section have resrilted in a bottom-up cost estimate that is within 10 percent of the parametric estimate.…”

Section: Reception Infrastructure and Flight Experiments Planningmentioning

confidence: 99%

Plan for the development and demonstration of optical communications for deep space

1991

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In this article, an overall plan for the development and demonstration of optical communications for deep-space applications is presented. The current state of the technology for optical communications is presented. Then, the development and demonstration plan is presented in two parts: the overall major systems activities, followed by the generic technology developments that will enable them. The plan covers the path from laboratory subsystems demonstrations out to a full-scale flight experiment system for the proposed Mars Communications Relay Orbiter mission.

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The NASA program for optical deep—space communications at JPL

Lesh

Lecture Notes in Control and Information Sciences

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Architectural Design Of A Ground-Based Deep-Space Optical Reception Antenna

Cited by 4 publications

References 0 publications

Fraunhofer Lidar Prototype in the Green Spectral Region for Atmospheric Boundary Layer Observations

Fraunhofer Lidar Prototype in the Green Spectral Region for Atmospheric Boundary Layer Observations

Plan for the development and demonstration of optical communications for deep space

The NASA program for optical deep—space communications at JPL

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