论文标题
两腿深空接力体系结构：性能，挑战和观点
Two-Leg Deep Space Relay Architectures: Performance, Challenges, and Perspectives
论文作者
论文摘要
在本文中，研究了具有数据继电器使用的行星际通信体系结构。在被考虑的“两腿”架构中，绕地球的航天器或在拉格朗日点处的轨道中接收到深空探针（leg-1）的数据，并将它们传递到地面（leg-2）。考虑到行星际链路的不同无线技术，即KA频段上方和光频率上方的无线电频率。此外，解决了透明和再生继电器以及不同不同轨道配置的情况，从不同的角度对此类系统进行了彻底的分析。结果表明，在指向准确性和机上天线大小方面，在某些限制下，采用两腿架构可以实现由直接空间到地点链路配置支撑的数据速率，其地面站天线较小。
In this paper, architectures for interplanetary communications that feature the use of a data relay are investigated. In the considered "two-leg" architecture, a spacecraft orbiting the Earth, or in orbit at a Lagrange point, receives data from a deep space probe (leg-1) and relays them towards ground (leg-2). Different wireless technologies for the interplanetary link, namely, radio frequencies above the Ka band and optical frequencies, are considered. Moreover, the cases of transparent and regenerative relaying as well as different different orbital configurations are addressed, offering a thorough analysis of such systems from different viewpoints. Results show that, under certain constraints in terms of pointing accuracy and onboard antenna size, the adoption of a two-leg architecture can achieve the data rates supported by direct space-to-Earth link configurations with remarkably smaller ground station antennas.
