| Abstract |
PROBA-2 is a follow-up ESA microsatellite technology demonstration mission to the PROBA mission (launch Oct. 21, 2001). The PROBA-2 goals embark on a scientific payload dedicated to sun observations and monitoring (space weather), and innovative platform subsystems with new advanced technologies such as propulsion systems with cold gas generator, Li-ion batteries, stellar compass and reaction wheels, solar array with concentrator, new central processor. The overall PROBA-2 mission includes a major Belgian contribution, on both platform and payload sides, and also on the ground segment part.
In June 2002, ESA released a general AO (Announcement of Opportunity), inviting proposals for the selection of the instrument complement for the PROBA-2 mission.
The technologies and technical concepts envisaged for PROBA-2 include:
• Miniaturized attitude measurement sensors to exploit recent technology advances in micro electro-mechanical (MEM) devices, active pixel arrays and folded optics for the development of high performance and compact measurement sensor
• Attitude control systems for high spatial resolution, targeting actuator performance, advanced pointing capability and control law design
• Propulsion technology for small spacecraft
• Integrated data handling and power subsystem, to decrease the spacecraft platform mass and power, and to improve payload resource allocation
• Automatic code generation for onboard software.
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