□□据《国际飞行》2008年7月3日报道,欧洲航天局计划研究把通信、地球观测及导航卫星集成到一个星座的可行性,以提高卫星星座的有效性和经济适用性。这项研究还将对星座的“最终系统结构”提出建议,其中包括卫星及其轨道类型、整个网络建构、合理的地面基础设施、制度结构、所 □ According to “International Flight” reported on July 3, 2008, the European Space Agency plans to study the feasibility of integrating communications, earth observation and navigation satellites into a constellation in order to improve the effectiveness and economic applicability of satellite constellations. The study will also make recommendations on the “final system structure” of constellations, including satellite and orbital types, the overall network construction, sound ground infrastructure, institutional structures,