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Auflistung nach Schlagwort "On-Board Computer"

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  • Zeitschriftenartikel
    Advanced data handling architecture for earth observation satellites
    (it - Information Technology: Vol. 63, No. 4, 2021) Bolzler, Julian; Herpel, Hans Juergen; Johansson, Jan; Gasti, Wahida; Mourra, Olivier
    In this paper we describe how commercial open standards for embedded systems could affect the architecture of future satellite data handling systems. Traditionally, satellite data handling systems are based on the principles of a federated architecture, i. e. one function is implemented as one box. Each box has its own housing and power supply. In the paper we describe the transition path from the traditional federated architecture to a centralized but modular architecture based on adapted industrial standards. In the presented approach functional modules like on-board computer, Global Navigation Satellite System receiver, interface boards, etc. are combined in a rack communicating via a standard backplane using standardized communication links. The analysis performed during the Advanced Data Handling Architecture study showed that this approach contributes significantly to mass and power reduction (approx. 20 %) of a typical satellite data handling system. Another major point highlighted in the Advanced Data Handling Architecture study is the simplification of Assembly, Integration and Test activities. All this will help space industry to handle increasing system complexity while keeping costs at an acceptable level.
  • Zeitschriftenartikel
    Towards modular and scalable on-board computer architecture
    (it - Information Technology: Vol. 63, No. 4, 2021) Kulau, Ulf; Herpel, Juergen; Qedar, Ran; Rosenthal, Patrick; Krieger, Joachim; Schoen, Friedrich; Masar, Ivan
    The demand for satellites and space systems with ever-increasing avionics requirements is constantly growing, whether in the field of satellite communications or earth observation. Traditional architectures for Data Handling Systems (DHS) on satellites are reaching their limits in terms of flexibility, interoperability and reusability, while slowing down the innovation cycle due to costly qualification. With regard to commercial and industrial solutions, it is evident that ‘plug and play’-like systems based on open standards can overcome the above-mentioned disadvantages. For this reason, this paper describes how open standards could affect the architecture of future satellite DHSs. In particular it shows an transition path from the traditional federated architecture to a centralized but modular architecture based on adapted industrial standards.