GRIFFIN
Regional GNSS Spectrum Situational Awareness (RGSSA)
– – Don’t avoid persistent radio frequency interference, mitigate/eradicate it ! – –
MISSIONS
Radio Frequency Interference (RFI) transmissions impacting future mission critical GPS / GNSS applications can originate from two different mediums; either TERRESTRIALLY (vehicles, marine, aircraft) or, SPACE (future LEO mega constellations) OR BOTH, simultaneously. Creating very complicated RF environments for GNSS dependent operational administrators (air traffic control, industrial automation, marine harbor etc.) to regionally comprehend both RFI severity and impact to mobile platform safety, known as Regional Situational Awareness.
As an alternative to individual Assured PNT platform strategies, (AVOIDANCE & AUGMENTATION), the GRIFFIN technology offers regional GNSS administrators the unique ability to proliferate enduring RFI ERRADICATION for broader GNSS user communities. For mission critical GPS/GNSS applications, like “dodging bullets”, avoidance and augmentation are not “ENDURING” strategies for dealing with persistent RFI problems. Only through eradicating interdiction actions in response, can the RFI problems ultimately be dealt with permanently.
Space
Terrestrial
Regional Spectrum Awareness
Using a network of passive phased array L1/L2 radar sensors, GRIFFIN uses a variety of signal processing techniques to precisely 3D localize and spectrally characterize multiple RFI sources at long distances. Combining each individual malicious RFI’s unique fingerprint with accepted communications industry’s ground influenced Electromagnetic wave propagations models, GRIFFIN’s centralized processing then creates detailed high fidelity Regional GPS/GNSS Situation Awareness digital spatial AI outputs.
System Components
Sensor Node Electronics (SNE)
Electronic components configured for bespoke safety critical missions. Different antenna arrays are used to meet varied application objectives.
GRIFFIN 2000 Enclosure
16 RF signal processing unit producing two 8-L1 and 8-L2 phased array radar systems.
Terrestrial Long Range Array
Low elevation, high gain, high sensitivity L1/L2 ground target signal magnification array.
Medium Range Universal Array
Medium elevation, all-round array delivering both tolerable low/high elevation outcomes.
Space LEO Optimized Array
High elevation, space optimized array for future mega LEO threat tracking.
Central Spatial AI Analysis (CSAA)
Central Processor (GCP) combining the SNEs beamform I/Q data to seed the collective precise “Difference of Arrivals” (DOAs), Time (TDOA), Frequency (FDOA) and PowerRF (PDOA) computations. Combining the multiple SNE’s DOAs with the GCP’s collective computations, GCP computes the precise threat 3D RFI geolocations & AOIP heatmaps.
Multi RF Threat Area of Influence
Digital Twin spatial AI projecting ElectroMag 3D ITU propagation models.
Centralized Multi Sensor Analysis
Multi distributed sensor NAV measurement aggregation – TDOA, AOA, Doppler, RF Power
Single Node Processing
Hybrid GNSS processing and phased array radar AOA threat tracking + RF power analysis
Videos
Central Node Demonstration
The video showcases GRIFFIN’s Central Node, which analyzes and fuses signals from a distributed station network for advanced processing.
The Central Node delivers real-time, high-precision 3D ECEF positions and orbit TLE tracks, enabling accurate detection and characterization of RF interference across space, air, and ground domains.
Sensor Node Demonstration
The video highlights a Sensor Node, designed to analyze a specific deployed area. It operates independently to detect and locate GNSS interference sources and can also integrate seamlessly with the Central Node for network-wide analysis.
Each Sensor Node provides localized GNSS Spectrum Situational Awareness, ensuring robust monitoring and protection within its kilometers of coverage area.