Cobham Gaisler AB provides IP cores and supporting development tools for embedded processors based on the SPARC architecture. We specialize in digital hardware design for both commercial and aerospace applications

Comparison of the Performance of Microprocessors for Space-based Navigation Applications

Comparison of the Performance of Microprocessors for Space-based Navigation Applications (DLR 2005)
Eberhard Gill, German Space Operations Center (GSOC), Deutsches Zentrum f�¼r Luft- und Raumfahrt (DLR) e.V.

The computing performance of three microprocessors, namely the ARM7TDMI, the PowerPC823, and the LEON2, has been compared for spaceborne navigation tasks. To that end, a realistic test scenario has been established which comprised the propagation of a state vector and its transition matrix for a satellite in Low Earth Orbit (LEO). As a result, it has been shown that the LEON2 processor outperforms the PowerPC823 by a factor of about 10 and the ARM7 TDMI by a factor of 5.