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In aerospace field, it is necessary to address the radiation effects to which embedded systems are especially sensitive. Besides, the reuse of existing components implies that a modification of the architecture is sometimes expected to meet the safety requirements for such critical applications. To achieve such safety level, physical radiation hardening is usually used despite its cost. However, by...
High reliability is usually the most important requirement in space applications. There is no hardware repair for them. Long mission times and harsh environment are a challenge for electronic circuits, and particular error mitigation techniques have to be implemented in order to be able to cope with the expected error effects. Always, Triple Modular Redundancy (TMR) is relied mostly to prevent SEUs...
The further development of navigation receivers has to go hand in hand with the advances in the constellations for Global Navigation Satellite Systems (GNSS). As more and more features will be provided by the services of modernized GPS, GLONASS and the upcoming Galileo and Compass, the functions and performance of spaceborne GNSS receivers have to be extended as well. Today, the MosaicGNSS Receiver...
To cope with the ever-growing demand for computing power, the space community is working for introducing Commercial-Off-The-Shelf (COTS) components in future space missions. As COTS components are not designed for working in such a hostile environment like space, suitable fault detection, isolation and recovery strategies are needed to guarantee the dependability of the system using COTS components,...
This paper describes the design, implementation and testing of flight software for KySat-1 a picosatellite scheduled to launch in 2009. The paper also discusses the challenges of developing dependable software in an academic environment and the development of dependable software for commercial off the shelf (COTS) hardware in space applications. Techniques employed to design for reuse and examples...
Self-reconfigurable and evolvable hardware is a new emerging technology which will enable adaptation of computing systems to changing environments. This paper deals with the design architecture of an autonomous on-board system and the development of a real-time scheduler for the adaptation manager of reconfigurable hardware fabric. Our approach employs computer architecture with two key layers: the...
As flexible thin film photovoltaic (FTFPV) cell technology is developed for space applications, integration into a viable solar array structure that optimizes the attributes of this cell technology is critical. An advanced version of ABLE's UltraFlex solar array platform represents a near-term, low-risk approach to demonstrating outstanding array performance with the implementation of FTFPV technology...
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