GP-Probe TGE2

GP-Probe TGE2 is designed to detect jamming, RF interference, asynchronous spoofing, sophisticated synchronous/coherent spoofing, and synchronous multi-transmitter spoofing. Its three GNSS channels enable progressively more advanced spoofing detection: one channel supports asynchronous attack detection, two channels enable synchronous spoofing detection, and three channels provide spatial analysis for multi-TX scenarios.

In a non-coherent, or asynchronous, attack, counterfeit GNSS signals are not precisely synchronized with the authentic signals, so the attack typically creates abrupt changes in signal parameters. In a coherent, or synchronous, attack, the counterfeit signal can initially closely match the authentic GNSS signal and then gradually manipulate position or time, making the attack significantly harder to detect.

The three antennas allow TGE2 to compare the same GNSS signals at different spatial points. This spatial information is essential for detecting sophisticated coherent spoofing, where counterfeit signals arriving from a common source behave differently from genuine satellite signals. For full three-channel operation, the recommended horizontal antenna spacing is approximately 0.25 to 5 meters.

Yes. A GP-Divider can split one GNSS antenna signal between a TGE2 input and another receiver or time server. Any TGE2 GNSS channel can be connected this way; the remaining channels can use their own antennas when full multi-channel spoofing detection is required. GP-Divider also provides a DC-pass output and a DC-blocked output with a load suitable for time servers that monitor antenna current.

TGE2 combines three GNSS measurement channels with a built-in 60 MHz real-time RF signal analyzer. The system can evaluate GNSS observables and signal-quality parameters together with spatial and phase relationships between channels, correlation behavior, RF power, spectrum, and spectrogram data. Combining these independent indicators provides much more information than using either a GNSS receiver or a spectrum analyzer alone.

TGE2 continuously provides RF power and spectrum measurements to GP-Cloud. When an incident is detected, the system can also provide higher-resolution spectrum data, spectrograms, and raw IQ samples for detailed post-analysis. GP-Cloud combines this RF information with GNSS parameters such as C/N0, pseudorange, carrier phase, Doppler, residuals, position accuracy, and other measurements.

Yes. With the TDOA option, multiple TGE2 detectors can provide synchronized raw RF data for Time Difference of Arrival localization. This allows a distributed sensor network to estimate the position of a jammer or other interference source rather than only detecting that interference is present.

TGE2 is the higher-performance detector for advanced spoofing analysis, interference classification, and localization. It uses three GNSS channels, a high-end real-time RF analyzer, and supports TDOA localization. DIN L1 is a compact single-channel DIN-rail detector designed for cost-effective distributed monitoring, synchronization applications, and anomaly/interference detection, with an integrated GNSS blocker and optional standalone processing.