“A blue box attached to the Olympic Rings contains a camera, which relays video of the journey to the Stadium screens, and a spot tracker will transmit their position to a satellite every 10 minutes.
– Testing on the ‘Rings in space’ project began in winter 2011, when the team were thrilled to capture dazzling footage
of a snow-covered England.”

http://www.london2012.com/mm%5CDocument%5CDocuments%5CPublications%5C01%5C30%5C43%5C40%5COPENINGCEREMONYGUIDE_English.pdf