SISNeT is a new technology that combines the powerful capabilities of satellite navigation and the Internet. The highly accurate navigation information that comes from the EGNOS (European Geostationary Navigation Overlay Service) Signal-In-Space (SIS) is now available over the Internet and in real time via SISNeT.

Specifically, SISNeT gives access to the wide-area differential corrections and the integrity information of EGNOS. The SISNeT project was undertaken by ESA during the second half of 2001. In August 2001, the first prototype of the system was set-up, and the SISNeT concept was successfully validated. Since February 2002, the system has been operational, broadcasting an EGNOS signal through the Internet, as generated by the EGNOS System.

Any user with access to the Internet (usually through wireless networks - GSM or GPRS) can access EGNOS through SISNeT, irrespective of the GEO visibility conditions. No EGNOS receiver is needed.

The scientific and engineering communities can benefit hugely from SISNeT because they can exploit the EGNOS information simply via the Internet.

This website gives extensive information on the technical aspects, interface and documentation of the ESA SISNeT system.

Technical news Archive

26 May 2006: announcing the new version 3.1 of SISNeT »»»
25 May 2005 : ANNOUNCING THE SISNeT MIGRATION FROM ESTB to EGNOS »»»
14 February 2003 : Toulouse bus test-drives European satellite navigation »»»
30 December 2002: Space technology to help the blind »»»
19 September 2002: Signal-in-Space through the Internet »»»
6 September 2002: Navigate via the web with the SISNeT receiver »»»
04 June 2002: First SISNeT handheld receiver recently developed »»»