Infrared Earth tracking for deep-space optical communications: feasibility study based on laboratory emulator

Chen, Yijiang; Charles, Jeffrey R.; Hemmati, Hamid; Biswas, Abhijit

doi:10.1117/12.711541

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…Consequently, it provides an attractive alternative to microwave communication for both commercial and military applications. [1][2][3][4][5][6][7][8][9] Due to small beam divergence and ultra-long distance, wavefront aberrations can strongly affect the performance of communication links.…”

Section: Introductionmentioning

confidence: 99%

Influence of misalignment and aberrations on antenna received power in free-space laser communications

Tan

Yang

et al. 2009

Opt. Eng

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To evaluate the influence of wavefront aberrations on antenna received power in free-space laser communications, an aberration attenuation factor is proposed, based on which the power penalty at the receiver due to misalignment and primary aberrations is investigated. It is shown that antenna received power decreases gradually with increasing misalignment and aberrations. A comparison shows that tilt ͑misalign-ment͒ has greater influence than other primary aberrations. When the rms aberration value is 0.1, the received power penalties caused by tilt, astigmatism, coma, curvature, and spherical aberrations are about 40%, 36%, 35%, 24%, and 23%, respectively. In addition, the obscuration ratio of the transmitter antenna has a noticeable but relatively minor influence on the aberration attenuation factor.

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Section: Introductionmentioning

confidence: 99%

Influence of misalignment and aberrations on antenna received power in free-space laser communications

Tan

Yang

et al. 2009

Opt. Eng

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Pointing and tracking errors due to localized distortion induced by a transmission-type antenna in intersatellite laser communications

Yang

Tan

2009

Appl. Opt.

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A truncated ellipse Gaussian model to express localized distortion is developed to a transmission-type optical antenna, based on which the effects of localized deformation on pointing and tracking errors are researched. It is shown that localized distortion has the greatest influence on pointing and tracking errors when distortion deepness h approximately 0.8 lambda, which does not depend on other distortion parameters. To reduce the impact of localized deformation on pointing and tracking errors, the machining precision of the objective lens of the transmission-type antenna should be much better than 0.8 lambda. The requirement of the machining precision for lenses is lower than that for mirrors. The maxima of pointing and tracking errors due to the localized distortion with different radii are given. We hope the results can be used in the design of intersatellite optical communication systems.

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Infrared Earth tracking for deep-space optical communications: feasibility study based on laboratory emulator

Cited by 2 publications

References 3 publications

Influence of misalignment and aberrations on antenna received power in free-space laser communications

Influence of misalignment and aberrations on antenna received power in free-space laser communications

Pointing and tracking errors due to localized distortion induced by a transmission-type antenna in intersatellite laser communications

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