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