NovAtel Expands Anti-jam Coverage with GAJT-AE3

Hexagon | NovAtel has introduced the GAJT-AE3, a new airborne anti-jam system designed to extend GNSS protection across all major constellations and frequencies in a compact form factor aimed at space-constrained platforms.

The GAJT-AE3 is the latest addition to the company’s GNSS Anti-jam Antenna Technology lineup. The product is positioned for airborne applications operating in increasingly contested spectrum environments, where lower-cost and more capable jammers are targeting a wider range of frequencies used for positioning, navigation and timing.

According to the company, the GAJT-AE3 is the first anti-jam product in its class to provide full multi-constellation, multi-frequency coverage across major GNSS signals. That broader signal protection is intended to help aircraft and other platforms maintain PNT availability even as interference techniques become more sophisticated and harder to avoid through conventional approaches.

The system’s antenna electronics mitigate interference by forming up to seven nulls per band in the direction of detected jammers. NovAtel said that capability is designed to improve survivability in dynamic multi-jammer conditions while also supporting jammer direction finding for greater situational awareness.

Rather than outputting navigation data directly, the GAJT-AE3 delivers a protected RF signal that can feed both modern and legacy GNSS receivers. That architecture may ease integration for operators looking to improve resilience without redesigning downstream receiver systems.

NovAtel also said the unit supports all GNSS frequencies as well as L-band corrections and Iridium PNT. The company is targeting a range of airborne and defense applications, from unmanned aircraft to more complex weapon systems, where size, weight and integration constraints can limit the use of larger assured-PNT hardware.

In a statement, Stig Pedersen, president of Hexagon’s Aerospace & Defence division, said the new system is intended to extend the company’s anti-jam portfolio for platforms where space is limited while increasing both signal coverage and multi-jammer awareness.

The GAJT-AE3 can be paired with antennas from Hexagon | Antcom’s portfolio, with custom antenna options also available. NovAtel said the system is now commercially available.