Satellites Earth Stations and Systems (SES); Radio Frequency and Modulation Standard for Telemetry@ Command and Ranging (TCR) of Geostationary Communications Satellites (V1.1.1)
The present document applies to Geostationary Communications Satellites operating their Telemetry@ Command and Ranging (TCR) systems in C- and Ku-Band. The present document sets out the minimum performance requirements and technical characteristics of the groundsatellite Radio Frequency (RF) interface partially based on Spread Spectrum Multiple Access (SSMA). With the growing number of satellites@ the Co-location constraints and the maximization of bandwidth for Communications Missions@ and interference has motivated the elaboration of the present document for geostationary satellites based on Spread Spectrum techniques. The present document addresses the following requirements: Telemetry; Command (Telecommand); Ranging. Currently@ no RF and Modulation standard exists for the TCR of geostationary communication satellites. The aim of the present document is to respond to such requirements. There are consequently similarities with existing agency standards@ like [2]@ [3] and [4]@ although some specifics have been introduced to respond to the requirement of multiple access for collocated geostationary communication satellites.