Glossary

Automatic Dependent Surveillance–Broadcast. The radio protocol commercial and most general-aviation aircraft use to transmit position, altitude, and identity.

Automatic Identification System. The maritime equivalent of ADS-B — vessels broadcast position, course, speed, and identifying info.

Automated License-Plate Reader. Cameras that capture and OCR plates. Surfaced here as a sensor-density map, not as a plate lookup.

Autonomous System Number. An identifier for a network operator on the public internet, used to attribute cyber traffic.

Global Database of Events, Language, and Tone. A live, machine-coded feed of media events used as the conflict and news firehose.

A 24-bit hex address uniquely identifying an aircraft transponder. The canonical key the aviation pipeline merges on.

Order of Battle. The catalog of units and assets in a theatre — what's deployed, where, by whom.

Simplified General Perturbations 4. The standard algorithm for propagating satellite positions from a TLE.

Server-Sent Events. A one-way streaming protocol over HTTP used to deliver aviation updates incrementally.

Stale-While-Revalidate. A caching pattern: return the cached response immediately, refresh in the background.

Two-Line Element set. The compact text format that encodes a satellite's orbital state at a given epoch.