标题： 星链星座中的激光卫星间链路 显示英文标题

标题： Laser Inter-Satellite Links in a Starlink Constellation

摘要： 激光星间链路（LISLs）被设想用于未来的卫星星座中，如SpaceX的Starlink第一阶段中的卫星。在星座内部，卫星可以与其他位于同一轨道平面或不同轨道平面的卫星建立LISLs。我们根据卫星在星座中的位置以及LISLs的持续时间，提出了一种LISLs分类方法。然后，利用Starlink第一阶段的卫星星座，我们研究了改变一颗卫星的LISL范围对其能与其他卫星建立的不同类型的LISL数量的影响。除了永久性LISLs外，我们观察到穿越轨道平面的卫星之间存在大量的临时LISLs。这类LISLs在实现下一代光无线卫星网络的低延迟路径方面可以发挥重要作用。 显示英文摘要

摘要： Laser inter-satellite links (LISLs) are envisioned between satellites in upcoming satellite constellations, such as Phase I of SpaceX's Starlink. Within a constellation, satellites can establish LISLs with other satellites in the same orbital plane or in different orbital planes. We present a classification of LISLs based on the location of satellites within a constellation and the duration of LISLs. Then, using satellite constellation for Phase I of Starlink, we study the effect of varying a satellite's LISL range on the number of different types of LISLs it can establish with other satellites. In addition to permanent LISLs, we observe a significant number of temporary LISLs between satellites in crossing orbital planes. Such LISLs can play a vital role in achieving low-latency paths within next-generation optical wireless satellite networks.