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GNSS Interference Detection and PNT Assurance

GPSPATRON

GPSPatron is a specialist provider of GNSS interference detection, classification, and anti-spoofing technology for critical infrastructure and defence. At iTkey, we design and deploy GPSPatron solutions for Australian organisations that depend on assured positioning, navigation, and timing. From GP-Probe sensors to GP-Cloud analytics and reporting, we help you detect, classify, and respond to jamming and spoofing threats before they impact operations.

Broadcast Media

  • Protection of GNSS references feeding PTP grandmasters for ST 2110 media networks
  • Detection of interference affecting frame-accurate synchronisation and play out timing
  • Automated failover triggers to backup time sources for uninterrupted operations

Defence

  • Persistent GNSS monitoring for bases, ranges, and critical facilities
  • Detection and classification of intentional interference and electronic warfare
  • Integration with SOC, SIEM, and command systems for rapid response

Energy

  • Protection of synchronisation infrastructure for substations and control centres
  • Early warning of interference affecting PMU timing and event logging
  • Integration with SCADA alarms and operational procedures for rapid response

Finance

  • Protection of GNSS time sources feeding matching engines and gateways
  • Audit trails and compliance evidence for regulators and internal assurance
  • Integration with risk management and incident response workflows

Mining

  • GNSS monitoring for autonomous haulage and fleet coordination systems
  • Detection of interference affecting positioning accuracy and safety systems
  • Integration with mine control centres and emergency response procedures

Education and Campuses

  • GNSS monitoring for research observatories, radio telescopes, and instrumentation
  • Early detection of interference affecting campus networks and research infrastructure
  • Protection of timing references for distributed experiments and data correlation

Products

GP-Probe TGE2

High-performance GNSS interference analyser and localisation sensor

  • GP-Probe TGE2 is a triple-channel GNSS sensor designed for advanced classification and source identification. Its spatial signal analysis enables reliable detection of all spoofing types, including coherent, non-coherent, and meaconing attacks.
  • An integrated 60 MHz real-time RF analyser provides spectrogram analysis, enabling forensic differentiation between low-cost jammers and advanced emitters. When deployed in a network, TGE2 supports TDOA localisation for precise source tracking.
  • Ideal for: Critical infrastructure, defence, aviation, ports, telecom hubs, data centres, and national monitoring networks.
GP-Probe TGE2 itkey
GP-Probe DIN L1 iTkey.au

GP-Probe DIN L1

Cost-effective, fixed GNSS interference detector for wide-area deployment

  • GP-Probe DIN L1 is a compact, permanently installed detector optimised for dense territorial monitoring. Its low-cost architecture enables large-scale deployment near roads, rail, telecom towers, power facilities, and broadcast sites.
  • DIN L1 continuously monitors interference, GNSS signal quality, and PPS timing accuracy, making it particularly valuable for 5G, broadcast SFN, and timing-critical networks. An onboard RF blocker can automatically isolate downstream GNSS receivers during spoofing or degradation events.
  • Ideal for: Smart cities, transport corridors, power grids, telecom networks, broadcast timing, and industrial facilities

GP-Probe Nano

Portable GNSS interference detector and logger

  • GP-Probe Nano is an ultra-compact, battery-powered detector designed for mobile inspections and on-site verification. It provides immediate visual, audio, and vibration alerts and can operate autonomously or connected to a smartphone or GP-Cloud.
  • Using passive body-shielding techniques, Nano enables last-meter direction estimation without directional antennas. It supports both real-time detection and long-term logging in a rugged, weather-resistant enclosure.
  • Ideal for: Field surveys, mobile patrols, site inspections, enforcement support, and rapid confirmation of interference sources.
GP-Probe Nano iTkey



GP-Probe Comparison Table

Feature / CapabilityGP-Probe TGE2GP-Probe DIN L1GP-Probe Nano
Primary roleDeep analysis & localisationWide-area fixed monitoringMobile field detection
Deployment typeRack / fixed siteDIN-rail fixed installPortable / wearable
GNSS interference detection✔ Advanced✔ Standard✔ Standard
Spoofing classification✔ All spoofing types◐ Indicators◐ Indicators
RF spectrum analysis✔ 60 MHz real-time analyser✖✖
Spatial analysis / TDOA✔ Yes◐ Network-assisted✖
PPS timing monitoring✔ Yes✔ Yes✖
Onboard GNSS blockingOptional✔ Integrated✖
Automation & integration✔ Lua, SNMP, RS-232✔ Lua, SNMP✖
Battery powered✖✖✔
Best use caseCritical infrastructure, defence, forensic analysisLarge-scale infrastructure monitoringOn-site verification & patrols
GP Cloud Charts With PPS Error 1024x576

GP-Cloud Analytics Platform

  • Real-time dashboards showing signal strength, carrier-to-noise, and interference events
  • Geospatial coverage mapping for multi-site deployments
  • Automated alerting via email, SMS, SNMP, and API webhooks for SOC integration
gps patron systems architecture iTkey

Systems Architecture


GPSPATRON delivers a distributed, multi-layer GNSS interference defence architecture designed for continuous monitoring, rapid classification, and precise localisation of jamming and spoofing events.

At the edge of the system is the GP-Probe detector family, deployed either as standalone sensors or as a coordinated network across critical infrastructure sites. These probes continuously monitor GNSS signal quality and RF conditions, detecting interference, anomalies, and spoofing in real or near-real time.

All GP-Probes communicate using a common protocol, allowing them to operate independently or as part of a distributed detection mesh. Data streams from the probes are forwarded to GP-Cloud, GPSPATRON’s central analytics and correlation platform, either in the cloud or deployed on-premise to meet security and sovereignty requirements.

GP-Cloud aggregates:
Live GNSS signal metrics
RF spectrum data
Event logs and historical datasets
Third-party GNSS receiver data (NMEA, RTCM, SBF)

Using this data, the platform performs real-time classification, correlates events across multiple locations, and supports TDOA-based localisation when multiple probes are deployed. The result is a unified operational picture that enables both strategic, wide-area monitoring and tactical, on-site verification.

By combining GP-Probe TGE2, DIN L1, and Nano, operators gain a layered system that scales from nationwide infrastructure protection down to last-meter field confirmation of interference sources.

Specific in‑use scenarios

Broadcast Facility GNSS Monitoring for ST 2110

Deploy GP-Probe sensors monitoring GNSS antennas feeding PTP grandmasters for ST 2110 media networks. Detect interference affecting frame-accurate synchronization and playout timing. Trigger automated failover to backup time sources with integration to broadcast automation systems. Generate incident reports for transmission logs and regulatory compliance. Alert master control and engineering teams via GP-Cloud with severity classification. Correlate interference with live broadcasts and production schedules.

Defence Base GNSS Monitoring

Deploy GP-Probe sensors across perimeter, headquarters, and test facilities to detect jamming and spoofing. Feed alerts to SOC with severity classification and recommended actions. Correlate events with operational logs and electronic warfare exercises. Provide periodic assurance reports to security and command staff. Integrate with force protection systems for coordinated response.

Substation PNT Protection for Energy

Install GP-Probes at critical substations feeding GNSS to timing grandmasters for PMUs and protection relays. Alert operations centre and trigger failover to backup time sources on detection of interference. Log incidents for compliance and root cause analysis. Integrate with SCADA alarms and SIEM platforms. Maintain compliance with grid resilience mandates and regulatory reporting requirements.

Finance Trading Infrastructure GNSS Assurance

Deploy GP-Probes at primary and DR colos monitoring GNSS feeds to timestamping systems. Detect spoofing and alert infrastructure teams with integration to existing monitoring tools. Maintain evidence logs for regulatory audit and internal compliance reviews. Provide quarterly assurance reports to risk and compliance committees. Integrate with change management and incident response workflows.

Mine Site GNSS Monitoring for Autonomous Operations

Install GP-Probes across mine sites monitoring GNSS for autonomous haulage and fleet coordination systems. Detect interference affecting positioning accuracy and safety systems. Alert mine control centre and trigger safety protocols for equipment stoppage. Integrate with emergency response procedures and safety management systems. Provide compliance reporting for safety and operational assurance requirements.

Research Observatory GNSS Protection

Install GP-Probe sensors at radio telescope and optical observatory sites to monitor GNSS references feeding precision timing systems. Detect interference from terrestrial sources, satellites, or unintentional emissions affecting synchronisation accuracy. Alert research operations and trigger failover to backup timing sources with automated escalation. Correlate interference events with observation schedules and data quality metrics. Provide incident reports for research integrity and funding agency compliance. Integrate with campus network operations centre for coordinated response.

Brand Resources


Explore detailed product specifications, firmware downloads, application notes and technical documentation from GPSPATRON, or connect with iTkey for local design, installation, and support across Australia.

Resources
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