GP-Probe TGE2 — GNSS Threat Detection Probe

Overview

The GP-Probe TGE2 is a three-channel receive-only probe designed to protect critical infrastructure and time servers (PNT) against sophisticated GNSS threats, including spoofing and jamming. Operating alongside the GP-Cloud, it provides resilient clock synchronization monitoring by continuously analyzing signal integrity and system health.

Technical Summary

• RF Channels: Three independent channels for multiple-TX spoofing detection
• Signal Analyzer: 60 MHz real-time FPGA-powered analyzer
• Frequency Band: L-Band (1555 MHz to 1615 MHz)
• Supported Constellations: GPS, GLONASS, BeiDou, Galileo, and SBAS
• Operating System: Real-time operating system (FreeRTOS)
• Form Factor: 1U half-size 19-inch rackmount

Operational Use Cases

• Detecting intentional, synchronous, and multiple-TX GNSS spoofing attacks
• Monitoring RF spectrum and classifying GNSS interference
• Localizing interference sources using Time Difference of Arrival (TDOA) data
• Monitoring time server health via embedded PPS phase error measurement

Deployment Environments

This probe is designed for datacenter and fixed-site infrastructure environments. The 1U half-rack chassis integrates efficiently into standard server enclosures, utilizing dual AC/DC power modules to support critical, high-availability monitoring deployments.

Performance Metrics

• Analyzer Bandwidth: 60 MHz real-time processing
• Operational Frequency Range: 1555 MHz to 1615 MHz
• Power Handling: Receive-only operation

Setup & Portability

The unit mounts in a standard 19-inch equipment rack requiring only a 1U half-size footprint. Dual AC/DC power supply support ensures redundant electrical connectivity during installation.

Compatibility

• Software Integration: Designed for use with GP-Cloud architecture
• Constellations: Fully supports GPS, GLONASS, BeiDou, Galileo, and SBAS networks
• Hardware Supported: Protects standard time servers requiring precise PNT data

FAQs

• How does Time Difference of Arrival (TDOA) localize GNSS interference? TDOA relies on multiple synchronized sensors receiving the same interference signal. By comparing the precise arrival times of raw IQ data at each geographic point, a centralized system calculates the exact origin of the disruption.
• How does antenna placement height affect interference detection range? Higher antenna placements increase the radio horizon, extending the distance over which interference can be detected. An antenna mounted 15 meters above sea level can typically detect ground-level interference sources up to 20 kilometers away.
• What role does PPS measurement play in timing network security? Pulse Per Second (PPS) phase error measurement continuously tracks a time server's output against the GNSS reference. Deviations in this timing offset immediately alert operators to internal hardware degradation or external signal manipulation.
• Problems we solve: how do we scope a GNSS monitoring requirement? Interference concerns alone do not define a GNSS monitoring requirement. Share your site or platform, operating conditions and the information operators need so Cyntony can help compare candidate solutions (Our process).
• Outcomes we deliver: what comes from working through the requirements? The practical outcome is a requirements-led set of product options to evaluate with Cyntony. Confirm performance, compatibility and any service scope for your configuration before selection (Our process).

Video Notes

A demonstration video showing the GP-Cloud dashboard visualizing a spoofing event detected by the GP-Probe TGE2, highlighting the 60 MHz spectrogram and TDOA map localization, would be ideal.