Category Intelligence & Security

Geopolitics, Intelligence & Security

Macro photograph of a passive RF listening sensor mounted on a military drone.

How a Nanosecond Delay Pinpoints a Target

Time Difference of Arrival geolocation is a passive electronic surveillance technique that calculates the exact origin of a radio signal by measuring the nanosecond delay between that signal hitting multiple, geographically separated listening sensors.

INDEX 26 Intelligence
30/06/2026

Geopolitics, Intelligence & Security

The Synthetic Aperture Radar Constellation: The Phase-History Interferometry of Earth Observation Intelligence

Synthetic Aperture Radar constellations bounce microwave pulses off the Earth's surface from orbit, computationally stitching the returning echoes together to generate sub-meter, three-dimensional intelligence imagery regardless of cloud cover or darkness.

INDEX 26 Intelligence
20/06/2026