Name one satellite system other than GPS that supports E-NAV.

The inclusion of "All of the above" as the answer highlights that various satellite systems complement GPS in providing electronic navigation.

Galileo is a European Global Navigation Satellite System (GNSS) that offers high-precision positioning services. It is fully operational and designed to ensure interoperability with other GNSS systems, enhancing global navigation capabilities.

GLONASS, operated by Russia, is another satellite navigation system that provides users with accurate positioning, navigation, and timing services. It is notable for its full global coverage and is compatible with GPS.

BeiDou is China’s satellite navigation system, which has also achieved global coverage and can deliver precise navigation solutions. Both regional and global services are available, enhancing the landscape of satellite navigation.

Recognizing that all these systems coexist and interact allows users to benefit from increased accuracy, reliability, and redundancy in electronic navigation. Thus, they can seamlessly integrate various GNSS options to improve navigation performance, especially in challenging environments or when certain systems may be less accessible.