Northrop Grumman says it’s successfully flight tested a jam-proof navigation system to replace the current gear on military aircraft. Embedded Global Positioning System (GPS) / Inertial Navigation System (INS) Modernization, known as EGI-M, was installed on a Cessna Citation and put through its paces in May. The core of the system is something called an … Continue reading Northrop Grumman Test Flies Jam-Proof GPS