United States Space Command Intelligence Directorate Measurement and Signature Intelligence (MASINT)

MASINT- Measurement and Signature Intelligence (MASINT) is a technical intelligence discipline that uses scientific and technical measurements of physical phenomena to detect, track, and identify targets. Instead of relying on literal intelligence like images or communications, MASINT focuses on a target's unique characteristics, or "signatures," such as:

Emissions: Heat, electromagnetic pulses, or radar signals.

Vibrations: Seismic or acoustic activity caused by movement.

Materials: Chemical or material composition detected through remote sensing.