Is EGNOS the only SBAS?

In addition to EGNOS, two other SBAS are currently operational: WAAS in the USA,  MSAS in Japan and KAAS in Korea.

Each of these systems complies with a common global standard, meaning they are both:

• Compatible: the systems do not interfere with each other
• Interoperable: a user with a standard receiver can benefit from the same level

of service and performance regardless of what coverage area they are in.