Optical feeder link architectures for very HTS: ground segment

Nicolas Girault; Pantelis-Daniel Arapoglou

doi:10.1117/12.2536121

12 July 2019 Optical feeder link architectures for very HTS: ground segment

Nicolas Girault, Pantelis-Daniel Arapoglou

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Proceedings Volume 11180, International Conference on Space Optics — ICSO 2018; 111805M (2019) https://doi.org/10.1117/12.2536121
Event: International Conference on Space Optics - ICSO 2018, 2018, Chania, Greece

Abstract

The paper deals with an analysis of Very High Throughput Satellite (VHTS) systems employing optical feeder links. As the capacities of newly announced next generation VHTS systems are exceeding the Terabit/s barrier, a large amount of investment needs to be directed not only to the space segment (as was the case traditionally), but also to the ground segment in support of the feeder links. To reduce this investment, satellite operators are reviewing various options and technologies for the feeder links, among which optical feeder links [1]. In this paper, different approaches are analysed for ground segment networks relying on Optical Ground Stations (OGS), exploring the concept of smart gateway diversity with N active OGS and P redundant ones, like is currently done in VHTS systems with RF feeder links. OGS locations are assessed in terms of aggregate availability and total cost for the satellite operator, which is an essential element for the viability of the VHTS system. Different options are assessed for the distribution of OGS gateway processing functions (local at OGS or centralised), and for their interconnection. The main technical challenges are discussed, identifying which technologies will be required for an operational VHTS system with OGS.

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Nicolas Girault and Pantelis-Daniel Arapoglou "Optical feeder link architectures for very HTS: ground segment", Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111805M (12 July 2019); https://doi.org/10.1117/12.2536121

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