What does EGI mean in UNCLASSIFIED

EGI stands for Embedded GPS INU which is an integrated navigation system that combines a Global Positioning System (GPS) receiver with inertial sensors.

The main purpose of the Embedded GPS INU system is to accurately track and calculate an aircraft's position, velocity and attitude while in the air.

Yes, EGI can be used in land vehicles such as cars, buses and trucks as well as ships and submarines to provide more accurate positioning data than regular GPS receivers.

The Embedded GPS INU system incorporates both a GPS receiver and inertial measurement unit (IMU) that work together to generate precise positional data without external references like ground-based navigation beacons.

One potential drawback of using embedded GPS systems is cost; they tend to be more expensive than standalone GPS units due to their sophisticated components. Additionally, since they rely on both inertial sensors and an active signal from the GNSS satellite constellations there are some signal impairments associated with environments such as urban canyons or tunnels where signal losses occur more often.