Near-Sun Free-Space Optical Communications from Space

Biswas, Aritra; Khatri, F.I.; Boroson, Don M.

doi:10.1109/aero.2006.1655849

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…Another limiting factor, is the position of the Sun relative to the laser transmitter and receiver. In a particular alignment, solar background radiations can increase and that will lead to poor system performance [45], [46]. This undoubtedly poses a great challenge to FSO system designers.…”

Section: Linkmentioning

confidence: 99%

Optical Communication in Space: Challenges and Mitigation Techniques

Kaushal

Kaddoum

2017

IEEE Commun. Surv. Tutorials

1,355

721

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Abstract-In recent years, free space optical (FSO) communication has gained significant importance owing to its unique features: large bandwidth, license free spectrum, high data rate, easy and quick deployability, less power and low mass requirements. FSO communication uses optical carrier in the near infrared (IR) band to establish either terrestrial links within the Earth's atmosphere or inter-satellite/deep space links or ground-to-satellite/satellite-to-ground links. It also finds its applications in remote sensing, radio astronomy, military, disaster recovery, last mile access, backhaul for wireless cellular networks and many more. However, despite of great potential of FSO communication, its performance is limited by the adverse effects (viz., absorption, scattering and turbulence) of the atmospheric channel. Out of these three effects, the atmospheric turbulence is a major challenge that may lead to serious degradation in the bit error rate (BER) performance of the system and make the communication link infeasible. This paper presents a comprehensive survey on various challenges faced by FSO communication system for ground-to-satellite/satellite-to-ground and inter-satellite links. It also provide details of various performance mitigation techniques in order to have high link availability and reliability. The first part of the paper will focus on various types of impairments that pose a serious challenge to the performance of optical communication system for ground-to-satellite/satellite-to-ground and inter-satellite links. The latter part of the paper will provide the reader with an exhaustive review of various techniques both at physical layer as well as at the other layers (link, network or transport layer) to combat the adverse effects of the atmosphere. It also uniquely presents a recently developed technique using orbital angular momentum for utilizing the high capacity advantage of optical carrier in case of space-based and near-Earth optical communication links. This survey provides the reader with comprehensive details on the use of space-based optical backhaul links in order to provide high capacity and low cost backhaul solutions.

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Section: Linkmentioning

confidence: 99%

Optical Communication in Space: Challenges and Mitigation Techniques

Kaushal

Kaddoum

2017

IEEE Commun. Surv. Tutorials

1,355

721

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“…MAGIC telescope was specifically designed in order to tolerate moderate Moonlight conditions [40]. An FSOC ground station should work during day and night, bearing high levels of daylight and even pointing as near to the sun as a few degrees [41]. However, IACT's technical incapability regarding background light is only related to the high sensitive PMTs, and as was explained, these photodetectors should have to be replaced with the ones usually employed in FSOC receivers.…”

Section:  mentioning

confidence: 99%

Feasibility of utilizing Cherenkov Telescope Array gamma-ray telescopes as free-space optical communication ground stations

et al. 2013

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The signals that will be received on Earth from deep-space probes in future implementations of free-space optical communication will be extremely weak, and new ground stations will have to be developed in order to support these links. This paper addresses the feasibility of using the technology developed in the gamma-ray telescopes that will make up the Cherenkov Telescope Array (CTA) observatory in the implementation of a new kind of ground station. Among the main advantages that these telescopes provide are the much larger apertures needed to overcome the power limitation that ground-based gamma-ray astronomy and optical communication both have. Also, the large number of big telescopes that will be built for CTA will make it possible to reduce costs by economy-scale production, enabling optical communications in the large telescopes that will be needed for future deep-space links.

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“…For link outages less than 1-4 weeks, SEP angles as low 3 -5 and SPE angles of 2 -4 are encountered. Smaller SEP/SPE angles with varying durations are realized for spacecraft around other planetary bodies [27]. Near-Sun operating consideration pointed out earlier in Section II-A applies for deep space; however, the larger effective aperture diameter on the ground and the extended durations present a much bigger challenge.…”

Section: B Deep-space Linksmentioning

confidence: 98%