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Objective of the project is the development and the qualification of the Eurostar Antenna Tracking System (ATS) functional chain. This includes the architecture design, the system analysis, the control loop design, the FDIR strategy, the software implementation and validation.
The following design and development activities were achieved:
The Antenna Tracking System allows improving the antenna pointing performance down to 0.05°, thus being compatible with multimedia missions and a global capacity of more than 70 Gigabits per second.
The EUROSTAR satellites with Antenna Tracking System enable to offer end-users high speed internet connections to corporate and consumer users comparable to ADSL2 equipped with small diameters (typically 60-80 cm).
The Antenna Tracking System functional chain is based on the following assemblies:
The RF sensing system uses the RF signal transmitted from a ground beacon to measure the angular pointing error of the antennas. These angular pointing errors are then transferred to the on-board data handling subsystem that processes these data and controls the antenna pointing mechanism to minimize the pointing error.
The system beam pointing error is then reduced down to 0.05° including station keeping manoeuvre phase.
This system therefore allows cancelling of:
The project has been carried out within a timeframe of 40 months with the following milestones:
|Kick Off||December 2006|
|Baseline Design Review||June 2007|
|Mid-Term Review||December 2008|
|Test Readiness Review||May 2009|
|Test Review Board||March 2010|
|Final Review||March 2010|
Final Review held with ESA on the 30th of March 2010.