This study discusses the current state of FSO technology, as well as global trends and developments in the industrial ecosystem to identify obstacles to the full realization of optical space-to-ground communication networks. Additionally, link performance and network availability trade-off studies are presented, comparing overall system performance between portable and large OGS networks in conjunction with a constellation of small low Earth orbit (LEO) satellites. The paper provides an up-to-date overview and critical analysis of the FSO industry and assesses the feasibility of low-cost portable terminals as an alternative to larger high-capacity OGS systems. This initiative aims to better inform optical communications stakeholders, including governments, academic institutions, satellite operators, manufacturers, and communication service providers

翻译：本研究探讨了自由空间光通信技术的现状，以及工业生态系统的全球趋势与发展，以识别全面实现光学星地通信网络所面临的障碍。此外，本文通过对比便携式与大型光学地面站网络结合小型低地球轨道卫星星座的整体系统性能，提出了链路性能与网络可用性之间的权衡研究。本文提供了对自由空间光通信行业的最新概述与批判性分析，并评估了低成本便携式终端作为大型高容量光学地面站系统替代方案的可行性。该研究旨在为光学通信领域的利益相关方，包括政府、学术机构、卫星运营商、制造商及通信服务提供商，提供更全面的决策参考。