Availability, outage, and capacity of spatially correlated, Australasian free-space optical networks

Author:

Birch MarcusORCID,Beattie James R.12ORCID,Bennet Francis,Rattenbury Nicholas3,Copeland Michael,Travouillon Tony,Ferguson Kate1,Cater John4,Sayat Mikhael3

Affiliation:

1. Australian National University

2. University of California, Santa Cruz

3. The University of Auckland

4. University of Canterbury

Abstract

Network capacity and reliability for free space optical communication (FSOC) is strongly driven by ground station availability, which is dominated by local cloud cover causing an outage. Here, we combine remote sensing data and novel methods to provide a generalized framework for assessing and optimizing optical ground station networks. This work is guided by an example network of eight Australian and New Zealand optical communication ground stations that span approximately 60° in longitude and 20° in latitude. Utilizing time-dependent cloud cover data from five satellites, we present a detailed analysis that determines the network availability and diversity, which showed that the Australasian region is well-suited for an optical network with a 69% average site availability and low spatial cloud cover correlations. Employing methods from computational neuroscience, we provide a Monte Carlo method for sampling the joint probability distribution of site availabilities for an arbitrarily sized and point-wise correlated network of ground stations. Furthermore, we develop a general heuristic for site selection under availability and correlation optimizations and combine it with orbital propagation simulations to compare the data capacity between optimized networks and the example network. We show that the example network may be capable of providing tens of terabits per day to a low Earth orbit satellite and up to 99.97% reliability to geostationary satellites. We therefore used the Australasian region to demonstrate, to the best of our knowledge, novel, generalized tools for assessing and optimizing FSOC ground station networks, as well as the suitability of the region for hosting such a network.

Funder

Australian Government Research Training Program

Commonwealth Scientific and Industrial Research Organisation

Australian National University

Ministry of Business, Innovation and Employment

Publisher

Optica Publishing Group

Subject

Computer Networks and Communications

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Deep space communication with the ANU optical communications ground station;Free-Space Laser Communications XXXVI;2024-03-12

2. Performance optimization of spatial diversity antenna using hybrid combination for terrestrial optical wireless communication;Optics Communications;2024-03

3. Instrumentation for the Mount Stromlo Optical Communications Ground Station;2023 IEEE International Conference on Space Optical Systems and Applications (ICSOS);2023-10-11

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