Hexagon | Novatel Gajt-ae3 Anti-jam Antenna System
Audio is not provided for this piece.
Assured Positioning: Multi-Constellation, Multi-Frequency Satellite Navigation
GAJT‑AE3 delivers dependable positioning, navigation, and timing by safeguarding signals across multiple constellations and frequency bands, including common navigation bands such as L1, L2, and L5 and their equivalents.Global Positioning System (Gps)GlonassGalileoBeiDouOther supported regional constellations
GAJT-AE3 Launch and Mission Context
Hexagon | NovAtel introduced GAJT‑AE3, the newest entry in its battle‑proven satellite-navigation anti‑jam antenna technology portfolio. The system answers the surge in sophisticated jamming that disrupts navigation — a risk amplified by current global conflicts.
| Model | Key Features | Intended Application |
|---|---|---|
| GAJT-710ML | Higher-performance anti-jam capability in a larger configuration, designed for demanding integrations. | Military aircraft and other platforms where maximum protection and flexibility are prioritized. |
| GAJT-710MS | Performance-oriented anti-jam protection optimized for tighter size, weight, and power constraints. | Space-constrained airborne and mission systems that still require robust protection. |
| GAJT-410MS | More compact anti-jam option intended to balance protection with integration simplicity. | Platforms with stricter integration limits where an optimized footprint is a key driver. |
| GAJT-AE-N | Anti-jam architecture focused on providing a protected antenna output for integration. | Programs that need a protected signal path and the flexibility to pair with different receiver choices. |
GAJT‑AE‑N is designed to provide a protected antenna output that can be integrated with a range of satellite-navigation receivers, with final compatibility depending on interface, integration, and qualification requirements.
As cheap, high‑power jammers expand across more navigation frequencies, operators require next‑generation resilience and reliability. Hexagon’s Gnss Resilience and Integrity Technology (Grit) relates to these antennas by emphasizing end-to-end resilience: interference protection at the antenna, integration with the navigation receiver, and integrity-focused monitoring to help maintain trustworthy positioning and timing when the environment degrades.
To meet that need, GAJT‑AE3 shields all major constellations with true multi‑constellation, multi‑frequency coverage in a compact form, sustaining trustworthy positioning, navigation, and timing for demanding airborne missions.Compact sizeLightweight designLow power consumptionRuggedized for harsh environmentsEasy integration with various platformsThis marks a step‑change in our combat‑proven protection for space‑constrained platforms, said Stig Pedersen, president, Aerospace & Defence Division, Hexagon. GAJT‑AE3 delivers exceptional coverage and multi‑jammer direction finding to improve protection and situational awareness.
Anti-Jamming Architecture and Direction Finding
The system is designed to protect against common interference approaches, including narrowband jamming, wideband (barrage) jamming, and multi-tone or swept interference that can affect multiple navigation signals at once. Its primary focus is suppressing jamming; resilience to spoofing, when required, is typically achieved through receiver and mission-system detection and operational procedures.As reliance on satellite navigation grows, anti-jam protection becomes a foundational layer for maintaining mission effectiveness under deliberate interference.
Antenna electronics create up to seven adaptive nulls per band toward interferers, preserving signals in dynamic multi‑jammer scenarios. In practice, adaptive nulling continuously adjusts the antenna array’s signal processing so reception is minimized in the direction of interference while maintaining gain toward desired satellites, helping keep navigation tracking stable even as jammers move or change power. Multi‑jammer direction finding adds situational awareness by estimating where interference is coming from, supporting threat cueing, route or altitude changes, and post-mission analysis.
Covering every satellite-navigation frequency — plus L‑band corrections and Iridium timing and positioning services — the compact unit integrates easily where a protected navigation signal is required.
| Platform Type | Compatibility |
|---|---|
| Uncrewed aerial systems | Supports size- and integration-constrained airborne installations that still require protected navigation signals. |
| Fixed-wing aircraft | Designed for airborne mission environments needing resilient navigation and interference awareness. |
| Rotary-wing aircraft | Suitable for dynamic flight profiles where interference conditions can change rapidly. |
| Ground vehicles | Integrates where protected navigation is needed for maneuver and mission timing in contested areas. |
| Maritime platforms | Supports installations where resilient navigation and timing are required under interference. |
| Weapons and effects systems | Applies to space-constrained systems requiring protected navigation inputs for guidance and timing. |
It pairs with Hexagon | Antcom antennas, including custom options, and integration with other compatible antenna types may be possible when electrical, radio-frequency, and performance requirements are met.
GAJT‑AE3 from Hexagon | NovAtel is available for purchase.
For GAJT‑AE3 sales or support, contact Hexagon through the Contact Us web form on its NovAtel site or via your regional Hexagon representative.
