Northrop Grumman’s involvement with GPS, which began in the mid-1980s, has been instrumental in optimizing inertial navigation products.

The company has led studies on GPS in medium-Earth orbit and low-Earth orbit, and introduced the Embedded GPS INS (EGI) in 1991.

The DARPA GPS Guidance Package (GGP) program improved GPS tracking performance under extreme vehicle dynamics and at lower signal-to-noise levels.