Trusted positioning when conventional GPS goes dark
GuardianGPS keeps a vessel's position trustworthy when GNSS is jammed, spoofed or simply unreliable. Redundant receivers, anti-jam protection and continuous integrity monitoring hold the fix — and tell the bridge the moment it can no longer be trusted.
Full protection against jamming and spoofing.
Anti-jamming protection
GuardianGPS continuously monitors its GNSS inputs and rejects jamming and spoofing, so the bridge keeps a trusted position even when the signal environment is contested.
Seamless redundancy
Independent GNSS channels run in parallel. If one is degraded or lost, GuardianGPS switches to the others automatically, with no gap in the position outputs.
Bridge-ready integration
A compact panel-mount unit with standard NMEA outputs, GuardianGPS integrates directly into existing bridge systems and feeds reliable position, heading and timing to your navigation and radar equipment.
Key Benefits
Anti-jamming protection that rejects interference and spoofing.
Independent GNSS channels with automatic switchover.
Continuous integrity monitoring, shown on the bridge.
Standard NMEA outputs for direct bridge integration.
Clear confidence on the bridge.
Advanced protection above deck.
GuardianGPS is a field-proven, advanced GNSS protection system engineered to deliver resilient, accurate, and trusted positioning in the world's most challenging maritime environments. Combining multi-band, multi-constellation GNSS technology, the SEALINK SLG-1A high-gain marine antenna, and intelligent anti-jamming and spoofing protection, GuardianGPS continuously monitors signal integrity to maintain navigational confidence under severe GNSS interference. Proven in real-world maritime operations, the system is available with a 5-inch (GuardianGPS 5200) intelligent bridge display, offering seamless integration with existing marine electronics and a straightforward retrofit solution for modern fleets.
System Specifications
Display
5” capacitive touch display with AG/AF coating
GNSS receiver
Multi-band, six constellations: GPS, GLONASS, Galileo, BeiDou, QZSS and NavIC, with SBAS
Antenna
SEALINK SLG-1A
Power
12-24 V DC, dual DC power inputs with automatic redundancy and power failure alarm
Environment
-20 °C to +70 °C, compass safe distance 1.30 m standard / 0.85 m steering
Interfaces & Integration
Power
12-24 V DC, dual DC power inputs with automatic redundancy and power failure alarm
Connector
RF TNC Female GPS interface
High-speed NMEA
4 × configurable NMEA 0183 ports, input or output
BAM interface
Full-duplex NMEA port for the Bridge Alert Management network
Dry-Contact
One dry-contact ss-relay interface
USB
USB-C, for backup and software updates
GuardianGPS System Includes
1 × Display Unit
5200 (5-inch)
1 × GNSS Antenna
SEALINK SLG-1A, active multi-band
1 × Antenna Bracket
ANT-1B, stainless steel
1 × Display Mounting Bracket
DBRT, deck or flush mount
1 × Antenna Cable
25M, TNC both ends
Also supplied
Quick-start card, digital-manual QR card and the installation manual
Engineered for interference. Proven at sea.
GuardianGPS delivers field-proven protection against GNSS jamming and interference, helping vessels maintain reliable positioning when conventional GPS systems fail. Minimize operational disruptions, reduce navigation risks, and keep your fleet moving safely through challenging waters.
