论文标题
分布式卫星系统的体系结构和同步技术:调查
Architectures and Synchronization Techniques for Distributed Satellite Systems: A Survey
论文作者
论文摘要
凝聚力分布式卫星系统(CDSS)是遥感和通信任务未来的关键促进技术。但是,他们必须满足严格的同步要求,然后才能普遍使用。当时钟或局部振荡器信号是在每个分布式节点上本地生成的,在绝对相,频率和时间上实现精确同步是一个复杂的问题。此外,卫星系统具有重大的资源限制,尤其是对于小型卫星,这些卫星被设想为未来CDS的一部分。因此,精确,健壮和资源有效的同步技术的发展对于未来CDS的发展至关重要。在这种情况下,该调查旨在总结和分类DSS同步技术的最相关结果。首先,定义了一些重要的体系结构和系统概念。然后,对文献中报告的同步方法进行了审查和分类。本文还提供了DSS的应用程序和同步技术的示例的广泛列表,除了与同步密切相关的其他操作中的最大进展(例如卫生馆间的范围和相对位置)。该调查还提供了有关基于ML的新兴数据驱动同步技术的讨论。最后,提出了当前的研究活动和潜在研究主题的汇编,确定问题和公开挑战,这些挑战对该领域的研究人员有用。
Cohesive Distributed Satellite Systems (CDSS) is a key enabling technology for the future of remote sensing and communication missions. However, they have to meet strict synchronization requirements before their use is generalized. When clock or local oscillator signals are generated locally at each of the distributed nodes, achieving exact synchronization in absolute phase, frequency, and time is a complex problem. In addition, satellite systems have significant resource constraints, especially for small satellites, which are envisioned to be part of the future CDSS. Thus, the development of precise, robust, and resource-efficient synchronization techniques is essential for the advancement of future CDSS. In this context, this survey aims to summarize and categorize the most relevant results on synchronization techniques for DSS. First, some important architecture and system concepts are defined. Then, the synchronization methods reported in the literature are reviewed and categorized. This article also provides an extensive list of applications and examples of synchronization techniques for DSS in addition to the most significant advances in other operations closely related to synchronization, such as inter-satellite ranging and relative position. The survey also provides a discussion on emerging data-driven synchronization techniques based on ML. Finally, a compilation of current research activities and potential research topics is proposed, identifying problems and open challenges that can be useful for researchers in the field.