The Standard Satellite Bus's (SSB) core avionics system is a further step in the development line of the software and hardware architecture which was first used in the bispectral infrared detector mission (BIRD). The next step improves dependability, flexibility and simplicity of the whole core avionics system. Important aspects of this concept were already implemented, simulated and tested in other ESA and industrial projects. This paper deals with different aspects of core avionics development and proposes an extension to the existing core avionics system of BIRD to meet current and future requirements regarding flexibility, availability, and reliability of small satellites and the continuously increasing demand of mass memory and computational power. The term 'core avionics system' as used by the authors of this paper is nearly synonym to the term 'command and data handling system'. This on-board computer is also the execution platform for attitude control algorithms as well as for navigation an on-board intelligence. The main risk factors in a typical core avionics development are the complexity, software-hardware interfaces and the difficulties to handle many different interfaces in a single system. The new core avionics concept targets these problems and aims to provide a very simple integrated solution of software and hardware. The border between both shall vanish. This concept can handle both, bus control and payload control in one system. The emerging and fast growing FPGA technology allows us to implement the biggest part of the core avionics in software, including classical CPU software and FPGA software. For the implementation there is no difference where the tasks will be deployed/execute and whether they run on a CPU or in a FPGA or which services are provided and/or consumed by hardware devices.


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    Title :

    An example from space: New development for high dependability for space board computing


    Additional title:

    Ein Beispiel aus der Raumfahrt: Eine neue Entwicklung für hohe Zuverlässigkeit der Rechnerprogramme in Raumfahrzeugen


    Contributors:


    Publication date :

    2008


    Size :

    13 Seiten, 13 Bilder, 10 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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