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GNSSGard
GNSSGard

GNSSGard

4 / 12-Element CRPA GNSS Anti-Jam System

GNSSGard is a next-generation GNSS protection platform combining Controlled Reception Pattern Antenna (CRPA) technology, IMU-assisted anti-spoofing, and dead-reckoning navigation to guarantee resilient positioning in contested, jammed, or spoofed GNSS environments.

Designed for unmanned systems, military vehicles, marine assets, and high-value infrastructure, GNSSGard ensures mission continuity even under the most aggressive interference.

Product Line

GNSSGard is available in two antenna configurations, offering scalable jamming resistance to match mission requirements.

Ready & Available

GNSSGard 4000

4-Element CRPA

Ready, in stock, and available off-the-shelf. Fully tested and production-ready. Ideal for UAVs, UGVs, marine platforms, and defense systems.

SJR Performance

60 – 80 dB

Under Development

GNSSGard 12000

12-Element CRPA

Maximum beamforming and nulling performance designed for high-threat, military-grade environments.

SJR Performance

120 – 150 dB

Signal-to-Jammer Ratio (SJR) Performance

Antennas SJR
4 Antennas 60 – 80 dB
12 Antennas 120 – 150 dB

More antenna elements provide stronger anti-jam performance and deeper nulls.

CRPA Beamforming & Null Steering

Dynamic 90° Main Beam

Beam steering in 20° increments for full 360° coverage around the platform.

270° Null-Steering Capability

Maintains satellite lock while simultaneously eliminating multiple interference sources.

Adaptive Response

Dynamically adjusts based on jammer direction and intensity for optimal protection.

Spatial Filtering

Robust null-steering to reject interference while maintaining uninterrupted GNSS lock.

Anti-Spoofing & Resilient Navigation

IMU-Based Spoofing Detection

  • Detects inconsistent GNSS behavior
  • Alerts flight controller during spoofing
  • Activated automatically during spoofing or signal loss

Dead-Reckoning Mode

  • Automatically switches to protected navigation mode
  • Computes position from onboard IMU
  • Typical accuracy: ~10 meters
  • Continuous navigation stream remains active

Technical Specifications

Interfaces

  • Standard: TTL
  • Optional: RS-232, RS-485, USB, Ethernet

Integrated GNSS Receiver

  • Multi-constellation, multi-frequency (L1 / L5)
  • High sensitivity & fast reacquisition

Power & Physical Characteristics

Weight < 400 g
Input Voltage 12 – 28 V DC
Power Consumption < 1 W

Supported GNSS Signals

Constellation Frequencies
GPS L1, L5
Galileo E1, E5A
BeiDou B1, B2A
GLONASS G1
QZSS L1, L5

Application Areas

UAVs / UAS

UGVs / Robotics

Military Ground Vehicles

GNSS-Guided Munitions

Marine & Autonomous Surface Vehicles

Critical Infrastructure Protection

Airborne & Rotary Wing Platforms

Border Security Systems

Protect Your Navigation Systems

Get in touch with our experts and discover how GNSSGard can safeguard your operations against GNSS jamming and spoofing threats.