Northrop Grumman Corp.
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Army Upgrades Projectiles with Over 100,000 GPS Kits

Nov. 11, 2022
The U.S. Army has accepted delivery of over 100,000 Precision Guidance Kits that improve the targeting accuracy of older artillery projectiles by combining fuze functions and GPS guidance in a module that fits easily within a weapon’s fuze well.

Replacing standard fuzing for existing artillery projectiles, Precision Guidance Kits (PGKs) from Northrop Grumman Corp. have demonstrated the value of upgrading existing weapons arsenals with modern technology. Over 100,000 PGKs have been delivered to the U.S. Army to add Global Positioning System (GPS) satellite guidance capabilities to conventional 155-mm artillery projectiles. Each PGK contains an integrated electronic device that combines fuze functions and GPS guidance, and it fits easily into artillery fuze wells.

Dave Fine, Northrop Grumman’s vice president for armament systems, said, “PGKs' precision provides a critical capability to artillery units, enabling forces to rapidly achieve mission success by reducing the number of rounds required to defeat targets.” He added, “Throughout our 100,000 deliveries, we’ve maintained superior performance, surpassing the Army’s objectives for both accuracy and reliability.”

Even as the PGKs were being installed to upgrade artillery rounds, Northrop Grumman was enhancing its latest PGKs. A built-in selectable safety feature prevents detonation if the PGK calculates that the projectile will exceed its selected miss distance according to its in-progress flight pattern. The company also is adding GPS M-Code capabilities to the PGKs to defend against threats against the use and accuracy of its GPS guidance, such as jamming signals. The newest versions of the PGKs will enable acquisition of two GPS signals for enhanced positioning accuracy and jamming resistance.

About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.

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