International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The transmission of high-rate telemetry data for space-based relay systems yields unique system requirements. The NASA Space-based Telemetry and Range-Safety (STARS) study evaluated system design requirements during Phase-1 flight tests. STARS Phase-2 efforts include the development of a high-rate transmitter and antenna system to demonstrate prototype system performance capabilities and new technologies for future operational systems to be incorporated into the NASA Next Generation Launch Technology (NGLT) vehicles. Phase-2 Range User (telemetry) system performance requirements and a prototype implementation approach are presented.

De 1960 à 1974, la France fut l’un des acteurs les plus dynamiques dans le développement des télécommunications par satellites, un domaine fortement marqué par la suprématie technologique des États-Unis. Ces réseaux représentaient des enjeux stratégiques et commerciaux très importants. La mise en place de l’organisation définitive pour la gestion et la réalisation d’un réseau mondial par satellites fit l’objet de longues et difficiles négociations pour les Français. Face au désintérêt de ses partenaires européens, la France s’engagea en 1967, avec les Allemands, dans un programme pour l’étude et la construction des satellites Symphonie. L’abandon du programme de lanceur européen Europa-2 obligea à solliciter les Américains pour le lancement du premier satellite. L’ambition française d’un réseau régional euro-africain commercial fut contrariée par les exigences des États-Unis pour une utilisation exclusivement expérimentale. Cependant, ce programme constitua une étape importante sur la voie de l’autonomie menant plus tard au projet de satellite national Telecom-1. / From 1960 to 1974, France was one of the most effective actors in the development of satellite communications, a domain which was strongly marked by the technological supremacy of the USA. These networks represented very important strategic and commercial challenges. The creation of the definitive organization for both the management and the construction of satellite worldwide networks, was at the centre of long and difficult negotiations for the French. Faced with the lack of interest of its European partners, France, in 1967, started with the Germans, a programme to study and construct Symphonie satellites. The abandonment of the programme for the booster rocket Europa-2, meant that the French had to seek American aid for the launch of the first satellite. The French hopes of having a Euro-African commercial regional network were thwarted by the American demands for its use to be exclusively experimental. However, this programme would prove to be an important milestone towards French autonomy. This would lead in the future, to the creation of a national satellite project Telecom-1.

International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / With explosive growth in the satellite communication market. there is an increasing need for the satellite network service providers to support many satellites with a common Telemetry, Tracking, and Commanding (TT&C) assets. The open bus technology, and Commercial Off The Shelf (COTS) Hardware and Software components, provides an opportunity to build a common IF and baseband systems that will support many satellites with different frequencies and protocols. However, the high frequency front end components of the ground station such as antenna or HPA can not be common due to different gain and polarization requirements of the various communication bands and frequencies. The system architecture presented in this paper offers such system that is interoperable and reconfigurable in near real-time to support multiple frequency and multiple communication protocols.