Which system guides EO/IR/IRR guided weapons?

• A. A radio-frequency beacon guiding by reception
• B. A visual system that transmits a picture (televisual or infrared) to guide the weapon in the terminal phase
• C. GPS coordinates only
• D. An inertial navigation system with no external input

Answer: (B)

The system relies on imaging guidance: EO/IR/IRR weapons use an imaging seeker that provides a live visual (or infrared) picture of the target. In the terminal phase, this image guides the weapon by letting the seeker or the fire-control system keep the target centered and steer the flight toward it. This direct visual tracking is what makes an imaging-based, streaming picture the correct description of how these weapons are guided.

RF beacons describe a different, non-imaging guidance method; GPS coordinates give location data without visual target confirmation; an inertial navigation system with no external input cannot lock onto or follow a moving target.