Electronic GPS Anomaly Detection System (EGADSTM) is a standalone, portable, real-time prototype GPS threat detector and situational awareness (SA) testbed. It demonstrates the potential of software defined radios (SDR) to support the rapid development of use case-specific SA capabilities without the need to change hardware.
Electronic GPS Anomaly Detection System
EGADS is composed of novel software and algorithms operating on a suite of commercial off-the-shelf GPS signal processing equipment in a portable format. A Sidekiq radio frequency front end streams LiveSky antenna samples to a full-featured software-defined receiver running on a NVIDIA Jetson graphics processing unit–equipped embedded computing device. All the components are housed in a 12-pound, human-portable carry case.
EGADS runs three situational awareness algorithms that can be placed by developers in any stage of the signal processing chain that may be vulnerable to a given threat scenario or use-case. Those algorithms include a pre-correlation in-band power monitor, an acquisition-domain cross ambiguity function monitor, and a peak suppression monitor in the tracking loops.
The concepts embodied in EGADS demonstrate how portable stop-gap SA tools can be developed to complement existing receivers. These advancements reduce risk for, and facilitate the development of, specifications for SA-oriented acquisition programs.
For more detailed information on MITRE’s EGADS or licensing options, contact the MITRE Technology Transfer Office at techtransfer@mitre.org.