Northrop Grumman is advancing the U.S. Navy’s air navigation capabilities with the deployment of the LN-251M, the next-generation the LN-251 Inertial Navigation System/Global Positioning System (INS/GPS). The LN-251M features M-code – a military-specific encrypted signal with enhanced resistance to jamming to protect against adversary threats.
- This is the first M-code navigation system for naval aircraft.
- M-code technology provides greater robustness to control GPS signal manipulation, allowing pilots greater operational capability in airspace where GPS has been turned off or spoofed.
- LN-251s supplied with Selective Availability (GPS) Anti-Spoofing Modules can be easily upgraded to M-code configuration.
Specialist:
Ryan Arrington, vice president, cockpit and navigation systems, Northrop Grumman: “The LN-251M is Northrop Grumman’s latest innovation to take air navigation to the next level. This major enhancement is a critical milestone in delivering advanced positioning, navigation and timing capabilities, enabling pilots to operate safely with a jam-resistant navigation system for naval aircraft.”
Program Details:
The LN-251s are designed to integrate seamlessly with current aircraft navigation systems and perform cohesively with future software upgrades and GPS modernization. Northrop Grumman began producing the LN-251 INS/GPS in 2003. To date, the company has delivered nearly 5.000 LN-251s and similar LN-270 INS/GPS units.
