Anti-Jam Antennas for Drones, UAV & USV

Manufacturers of anti-jamming GPS antennas for unmanned systems, including suppliers of CRPA antennas for drones, UAV, and USV
Overview Anti-Jam Antennas for Drones, UAV & USV
By Mike Ball Last updated: February 5th, 2025

Anti-jam antennas form part of systems that are used to prevent or mitigate the effects of jamming devices that target GNSS receivers and signals such as GPS.

GAJT-710MS Anti-Jam Antenna

GAJT-710MS Anti-Jam Antenna by NovAtel

These GNSS signals are used by drones and unmanned vehicles for position, navigation and timing (PNT), and their disruption can lead to less precise results or even the complete loss of tracking and positioning.

Jamming of GPS and GNSS systems is usually performed by broadcasting signals on the same frequencies that overpower the relatively weak signals broadcast by the satellites.

Controlled Reception Pattern Antennas (CRPA)

Many GPS anti-jamming antennas are CRPAs (Controlled Reception Pattern Antennas) that replace the standard GNSS receiver antenna. These antennas work by creating a reception pattern that maximizes the GNSS signal-to-noise ratio, using beam-steering to prioritize signals from the direction of the satellites and creating “nulls” in the direction of the interference. This technique takes advantage of the fact that GPS and GNSS jammers are likely to be located at lower angles of elevation than the satellites broadcasting the real GNSS signals.

Anti Jamming GPS Antennas

Anti-jamming antennas may protect a range of different GNSS signals, including:

  • TUALAJ 8300-D GNSS CRPA antenna GPS/GNSS anti-jamming system

    CRPA antenna GPS/GNSS anti-jamming system by TUALCOM

    GPS L1 and L2,

  • Galileo E1,
  • QZSS L1 and L2,
  • SBAS L1 signals

They may also be compatible with M-code, an advanced GPS signal reserved for military users.

Ruggedized & SWaP Optimized

Anti-jamming antennas for UAVs (unmanned aerial vehicles), UGVs (unmanned ground vehicles), USVs (uncrewed surface vehicles) and other robotic platforms are typically designed to be SWaP (size, weight and power)-optimized.

They may be constructed with weather-proof designs rated to standards such as IP67 to allow them to operate in harsh environments, and may also feature marine hardening to protect them from salt spray and other sea conditions.

Products (15)

GAJT-310 Anti-Jam Antenna

Anti-jam antenna with integrated or flexible form factor options

Anti-jam antenna with integrated or flexible form factor options
...ght and power) anti-jamming antenna that is ideal for small UAVs and unmanned systems platforms....
GAJT-410ML Anti-Jam Antenna

Anti-Jam Technology for Space-Constrained Military Land Applications

Anti-Jam Technology for Space-Constrained Military Land Applications
... battle-proven anti-jam technology. Designed specifically for rapid integration into...
GAJT-410MS Anti-Jam Antenna for Marine

Anti-Jam Technology for Space-Constrained Civilian and Military Marine Applications

Anti-Jam Technology for Space-Constrained Civilian and Military Marine Applications
GPS Anti-Jam Technology (GAJT) mitigates interference and jamming by creating nulls in the antenna...
GAJT-710ML Anti-Jam Antenna

Single Enclosure GPS Anti‑Jam Technology (GAJT) for Land Applications

Single Enclosure GPS Anti‑Jam Technology (GAJT) for Land Applications
...g nulls in the antenna gain pattern in the direction of jammers, providing significant anti-jam... ...ovAtel’s GPS Anti-Jam Technology (GAJT) is a battle-proven assured positioning, navigation and...
GAJT-710MS Anti-Jam Antenna for Marine

Single Enclosure GPS Anti‑Jam Technology (GAJT) for Marine Applications

Single Enclosure GPS Anti‑Jam Technology (GAJT) for Marine Applications
...g nulls in the antenna gain pattern in the direction of jammers, providing significant anti-jam...
GAJT-AE-N GNSS Anti-Jam Antenna Electronics

Designed for size/weight constrained applications including unmanned platforms

Designed for size/weight constrained applications including unmanned platforms
...t provides the antenna electronics for a Controlled Reception Pattern Antenna (CRPA) in a custom...
AGNOSIS Anti-Jamming System

GNSS anti-jamming protection for UAVs & unmanned systems

GNSS anti-jamming protection for UAVs & unmanned systems
...e AGNOSIS GNSS anti-jamming system uses advanced CRPA (controlled reception pattern antenna), high...
TUALAJ 8300-D GNSS CRPA Anti-Jam System

8-array CRPA antenna GPS/GNSS anti-jamming system

8-array CRPA antenna GPS/GNSS anti-jamming system
TUALCOM Anti-Jam GNSS CRPA System supports critical missions by providing jam free GNSS signals. ...
TUALAJ 4100 CRPA Anti-Jam System

Low-power 4-antenna anti-jamming system

Low-power 4-antenna anti-jamming system
...ttern antenna) anti-jamming system that provides robust GNSS signals for UAVs and unmanned systems....
TUALAJ 4100 MINI CRPA Anti-Jam System

Compact 4-antenna anti-jamming system

Compact 4-antenna anti-jamming system
...ttern antenna) anti-jamming system that provides robust GNSS signals for UAVs and unmanned systems....
TUALAJ 4200 CRPA Anti-Jam System

4-antenna omnidirectional anti-jamming system

4-antenna omnidirectional anti-jamming system
...provide robust jam-free GNSS signals for UAVs and unmanned systems....
TUALAJ 4200 MINI CRPA Anti-Jam System

Compact 4-antenna omnidirectional anti-jamming system

Compact 4-antenna omnidirectional anti-jamming system
...provide robust jam-free GNSS signals for UAVs and unmanned systems....
TUALAJ 4300 GNSS CRPA Anti-Jam System

4-array antenna GPS/GNSS anti-jamming system

4-array antenna GPS/GNSS anti-jamming system
...provide robust jam-free GNSS signals for UAVs and unmanned systems....
TUALAJ 8100 GNSS CRPA Anti-Jam System

8-array antenna GPS/GNSS anti-jamming system

8-array antenna GPS/GNSS anti-jamming system
...h a variety of antennas and physical solutions for suppression performance such as elevation...
GNSS CRPA Anti-Jam System TUALAJ 8300

8-array antenna GPS/GNSS anti-jamming system

8-array antenna GPS/GNSS anti-jamming system
...h a variety of antennas and physical solutions for suppression performance such as elevation...

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