Hexagon’s positioning division NovAtel has introduced the GAJT-AE3, a compact anti-jam antenna system engineered to protect GNSS signals in airborne and uncrewed applications where interference is becoming a growing operational risk.
GAJT-AE3 Expands Anti-Jam Protection Across All GNSS Constellations and Frequencies
The GAJT-AE3 represents the latest evolution of NovAtel’s GNSS Anti-Jam Technology (GAJT) platform, designed to maintain reliable positioning, navigation, and timing in contested environments. The system delivers full multi-constellation, multi-frequency coverage, protecting signals from GPS, GLONASS, Galileo, and BeiDou simultaneously.
This level of coverage is increasingly critical as modern jamming devices are no longer limited to single-frequency disruption. Instead, they can target multiple bands at once, significantly degrading positioning accuracy or causing complete signal loss. By addressing all major GNSS frequencies, the GAJT-AE3 targets one of the most pressing vulnerabilities in satellite-based navigation.
Multi-Null Beamforming Technology Enables Real-Time Interference Suppression
At the core of the GAJT-AE3 is controlled reception pattern antenna (CRPA) technology, which actively suppresses interference by forming spatial nulls in the direction of jamming sources.
The system can generate up to seven nulls per frequency band, allowing it to mitigate multiple simultaneous jammers in dynamic scenarios such as UAV operations or airborne surveillance missions. This is particularly relevant in modern conflict zones and high-interference environments where signal threats are both mobile and unpredictable.
The output remains a clean RF signal compatible with standard GNSS receivers, meaning the system can be integrated into both new platforms and existing fleets without requiring major architecture changes.
Compact Form Factor Targets Space-Constrained Airborne Platforms
One of the defining aspects of the GAJT-AE3 is its reduced size and integration flexibility. Traditional anti-jam systems often require larger antenna arrays and significant installation space, limiting their use on smaller platforms.
The GAJT-AE3 is specifically designed for size-constrained applications, including:
- unmanned aerial vehicles (UAVs);
- loitering munitions and autonomous systems;
- helicopters and light aircraft;
- advanced defense platforms requiring low-profile installations.
The system also supports L-Band corrections and Iridium PNT signals, extending its usefulness beyond standard GNSS positioning into resilient navigation architectures that combine multiple signal sources.
Designed for Integration with Antcom Antennas and Custom Configurations
The GAJT-AE3 is compatible with a range of antenna solutions from the Hexagon Antcom portfolio, including application-specific and custom-designed configurations. This allows system integrators to tailor the solution depending on platform requirements, environmental conditions, and mission profiles.
Ease of integration is a key focus, reducing deployment time and enabling faster adoption across both commercial and defense sectors.
Rising GNSS Jamming Threats Drive Demand for Assured PNT Solutions
The release of the GAJT-AE3 comes amid a global increase in GNSS interference incidents. Low-cost jammers are becoming more accessible and capable, while state-level electronic warfare systems continue to evolve.
For operators relying on high-precision positioning such as UAV fleets, surveying aircraft, and autonomous systems, the ability to maintain signal integrity is no longer optional. Anti-jam technologies like GAJT are increasingly becoming a baseline requirement rather than a specialized add-on.
About NovAtel
NovAtel is part of Hexagon, a global technology group focused on digital reality solutions, combining sensor, software, and autonomous technologies.
Hexagon operates in more than 50 countries and employs over 24,000 people worldwide. The company reported annual revenues of approximately €5.4 billion, with its positioning intelligence division playing a key role in GNSS, autonomy, and geospatial innovation.
NovAtel itself is recognized as a leading provider of high-precision GNSS receivers and assured positioning technologies, with products widely used across agriculture, surveying, aerospace, defense, and autonomous systems.
