Virtual Satellite Integration and the SpaceWire Internet Tunnel

Authors: 
Stuart Mills, Steve Parkes, Raffaele Vitulli
Conference/Journal Name: 
International SpaceWire Conference Dundee 2007
Date Published: 
September 2007
Page References: 
pp.213-220
ISBN of Journal Issue/Conference Proceedings: 
978-0-9557196-0-8

A major area of risk in spacecraft development is the integration of sub-systems late in the development cycle. Sub-systems are often developed by different organisations in different countries, making it expensive to bring them all together for testing. Although the SpaceWire standard has helped reduce incompatibility problems at the data link and physical layers, there is still the potential for problems at the higher layers. These problems may only be found during integration testing, which is late in the development cycle, and may therefore be very costly to address.

This paper presents a solution to reduce that risk: virtual satellite integration and the SpaceWire Internet Tunnel. Virtual satellite integration is a process whereby the subsystems of a satellite are brought together virtually for testing. The SpaceWire Internet Tunnel is a tool which makes it possible to virtually integrate sub-systems which are to be connected using SpaceWire.