论文标题
天体：狮子座边缘的虚拟软件系统测试床
Celestial: Virtual Software System Testbeds for the LEO Edge
论文作者
论文摘要
由于SpaceX和Telesat等私人太空公司正在建立大型LEO卫星星座以提供全球宽带互联网访问，研究人员建议将计算服务嵌入卫星星座中，以在Leo Edge上提供计算服务。尽管目前的狮子座边缘仅是理论上的，但预计提供者将迅速开发其卫星技术，以使新的太空竞赛保持上风。 在本文中，我们回答了研究人员如何在准确的运行时环境和具有成本效益的可扩展性中评估任意软件系统的可能性的问题。为此，我们提出了CETERESTIAL，这是基于微型VLE的狮子座边缘的虚拟测试。天体可以有效地模仿单个卫星及其运动以及具有现实网络条件并以应用不可能的方式的地面站服务器，我们在经验上表现出来。此外，我们探讨了在有关CELESTIAL的案例研究中，在Leo Edge基础架构上部署实时遥感应用程序的机会和含义。
As private space companies such as SpaceX and Telesat are building large LEO satellite constellations to provide global broadband Internet access, researchers have proposed to embed compute services within satellite constellations to provide computing services on the LEO edge. While the LEO edge is merely theoretical at the moment, providers are expected to rapidly develop their satellite technologies to keep the upper hand in the new space race. In this paper, we answer the question of how researchers can explore the possibilities of LEO edge computing and evaluate arbitrary software systems in an accurate runtime environment and with cost-efficient scalability. To that end, we present Celestial, a virtual testbed for the LEO edge based on microVMs. Celestial can efficiently emulate individual satellites and their movement as well as ground station servers with realistic network conditions and in an application-agnostic manner, which we show empirically. Additionally, we explore opportunities and implications of deploying a real-time remote sensing application on LEO edge infrastructure in a case study on Celestial.
