S-Band Advanced Transponder - 1
New generation of Galileo Satellites are intended to provide high TT&C performances in terms of flexibility and link robustness. The new S-Band Transponder (SBAT) shall be capable to operate in secure mode through all the different mission phases, under the different S/C configurations and for the different TT&C modes.
On-Station and in Nominal configuration, the SBAT shall support also sufficient data throughput to manage the expected future next generation constellation satellites including also Inter Satellite Links (ISL).
As a consequence, the SBAT shall support:
- on-board flexibility with accommodation of different TC/TM data rates,
- data rate increased with respect to the current IOV/FOC TT&C link,
- spectrum monitoring, interference detection & cancellation,
- accommodation of more powerful data encoding scheme for forward error correction (FEC) with interface optimisation towards security unit and on-board computer.
The implementation of the data decoding (up-link FEC) and encoding (downlink FEC) function inside the SBAT allows to simplify (with respect IOV/FOC) the Communication Subsystem processing and signal routing between the S-band transponder, the security unit and on-board computer.
Backward compatibility with current IOV/FOC subsystem is also supported
The first part of the activity is focused on the completion and finalisation of the signal definition and unit requirements including link robustness and interference detection/mitigation assessment, including analysis, simulation and bread-boarding activities. Following the consolidation of the unit specifications, the Engineering Model (EM) of the SBAT shall be designed, built and tested.
Two parallel contracts are placed for dual sourcing.
Name: Thales Alenia Space
Name(s): Thales Alenia Space Italia, University of Cantabria
Last Updated: 29/01/2020 09:59