Point ahead angle prediction based on Kalman filtering of optical axis pointing angle in satellite laser communication

Zhang, Furui; Ruan, Peng; Han, Jiuqiang

doi:10.1007/s10043-020-00608-6

Cited by 5 publications

(1 citation statement)

References 16 publications

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“…Point ahead angle (PAA) is a requirement of free-space optical communications systems where the relative velocity between the terminals is significant. 24 The beacon on the ground station must be pointed ahead to compensate both for the motion of the satellite while the downlink beacon travels to the OGS, and for the further motion of the satellite while the uplink beacon travels to the satellite. For instance, a satellite in a circular 500km orbit can require up to 50µrad of point ahead angle, though this depends on how close to overhead a particular pass is.…”

Section: Point Ahead Anglementioning

confidence: 99%

Beamshaping beacon light for satellite quantum key distribution: spatial separation and point ahead angle

Simmons,

Donaldson

2023

Quantum Technology: Driving Commercialisation of an Enabling Science IV

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Section: Point Ahead Anglementioning

confidence: 99%

Beamshaping beacon light for satellite quantum key distribution: spatial separation and point ahead angle

Simmons,

Donaldson

2023

Quantum Technology: Driving Commercialisation of an Enabling Science IV

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Evaluation of Satellite’s Point-Ahead Angle Derived from TLE for Laser Communication

Lazzaro

Bettanini

2022

Aerotec. Missili Spaz.

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Advances in lasers, optics and electronics for Satellite’s optical communication are opening the possibility of very high performance near Earth space links with data rate up to several Gbps. Being the divergence of the laser beam typically of tens of $$\mu$$ μ rad, an extremely high precision pointing is needed to correctly establish and maintain data optical link. In particular, the relative motion between the satellite and the ground station shall be accurately evaluated to estimate how to correct pointing angles for future orbital locations. This correction is made via a point-ahead mirror (PAM) mechanism, which deviates the laser beam by an angle called point-ahead angle (PAA). The purpose of this paper is evaluate the possibility of accurately estimate the point-ahead angle in advance using the two-line elements sets for the orbiting satellite, which are available before the ground station overpass. The study evaluated TLE-based orbital evolution of Sentinel-6 satellite, comparing the results with the high precision data obtained by laser ranging from the crustal dynamics data information system (CDDIS). The maximum error observed between the estimated and measured point-ahead angles was less than 1$$\mu$$ μ rad, demonstrating the possibility of this point-ahead correction technique for LEO orbiting satellites.

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Discounted LQG-based Spiral Scanning Control of a Piezo Actuated Fast Steering Mirror for Space Laser Communication

Dong

Xie

Wang

et al. 2022

2022 China Automation Congress (CAC)

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Point ahead angle prediction based on Kalman filtering of optical axis pointing angle in satellite laser communication

Cited by 5 publications

References 16 publications

Beamshaping beacon light for satellite quantum key distribution: spatial separation and point ahead angle

Beamshaping beacon light for satellite quantum key distribution: spatial separation and point ahead angle

Evaluation of Satellite’s Point-Ahead Angle Derived from TLE for Laser Communication

Discounted LQG-based Spiral Scanning Control of a Piezo Actuated Fast Steering Mirror for Space Laser Communication

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