The journal covers all aspects of the theory, practice and operation of satellite systems and networks. Papers must address some aspect of satellite systems or their applications. Topics covered include:-Satellite communication and broadcast systems-Satellite navigation and positioning systems-Satellite networks and networking-Hybrid systems-Equipment-earth stations/terminals, payloads, launchers and components-Description of new systems, operations and trials-Planning and operations-Performance analysis-Interoperability-Propagation and interference-Enabling technologies-coding/modulation/signal processing, etc.-Mobile/Broadcast/Navigation/fixed services-Service provision, marketing, economics and business aspects-Standards and regulation-Network protocols