The GREMLIN system analyzes UAPs with advanced sensors to build databases and better understand reported aerial anomalies.
The Pentagon uses the GREMLIN system, developed by the Georgia Tech Research Institute, to track down unidentified aerial phenomena (UAPs). Integrating 2D/3D radar, infrared sensors and satellite communication tools, GREMLIN collects real-time data on objects detected around sensitive sites. Its aim is to establish an “activity standard” to help identify future anomalies more easily. In recent tests, GREMLIN has demonstrated its ability to characterize and analyze data on UAPs, while ruling out extraterrestrial or adversary hypotheses in most cases.
Operation and technical capabilities
The GREMLIN system is a set of reconfigurable sensors designed to analyze unidentified aerial phenomena (UAP). It combines several advanced technologies: 2D and 3D radars, long-range electro-optical/infrared sensors, GPS tracking tools and radio-frequency spectrum monitoring systems. These data are centralized in an analysis node, where they are merged to provide a complete view of the objects detected.
During tests in March 2024, GREMLIN collected data on UAPs near strategic sites. Within 90 days, the system had established a database of normal activity in these areas, facilitating the detection of future anomalies. As an example, nearly 485 sightings of UAPs were reported between May 2023 and June 2024, 40% of which were balloons, drones or birds, according to the analyses.
A strategic issue for national security
GREMLIN’s first missions focused on sensitive areas around military installations. Of the 485 cases analyzed, 100 were reported in the East China Sea, a region where increased surveillance could indicate adversary activity. However, no evidence was found linking these UAPs to advanced technologies or hostile data collection.
By creating a “baseline of normal activity”, GREMLIN helps to reduce sensor bias and identify true anomalies. This process is essential in strategic regions where potential adversaries could exploit gaps in surveillance to gather intelligence. Eventually, the data collected will be used to reanalyze around 444 archived cases, previously unresolved for lack of sufficient information.
Transparency and UAP challenges
The 2024 report from the All-domain Anomaly Resolution Office (AARO) confirms that most of the UAPs analyzed are neither extraterrestrial nor adversarial. However, 21 cases merit further investigation due to unexplained anomalies. AARO is working with scientific agencies to analyze these cases, while making the data available to the public. For example, videos of unclassified incidents will be published from November 19, 2024, in an effort to reduce the stigma attached to reporting aerial phenomena.
Over-classification of incidents has long prevented a full understanding of UAPs. AARO is working to reduce this brake by declassifying certain cases, which could also help detect potential adverse activity. Indeed, a lack of transparency can deter reporting, providing an opportunity for adversaries to carry out clandestine activities.
Scientific implications and future applications
The absence of extraterrestrial evidence does not rule out the existence of unknown technologies. As AARO Director Jon Kosloski points out, some incidents remain inexplicable, even to experts in physics and engineering. GREMLIN plays a key role here, providing accurate data for future analysis.
GREMLIN’s efficiency also paves the way for civilian applications. Similar systems could be used to monitor airspace for illegal activities, such as unauthorized drone traffic or clandestine surveillance. What’s more, the integration of multispectral data and information fusion tools could revolutionize current approaches to air safety.
War Wings Daily is an independant magazine.