Guidance system using onboard radar to actively emit and receive signals for target tracking and missile course correction.

Fire-and-forget refers to a missile guidance system where the missile guides itself to its target after launch, requiring no further input from the operator.

A proximity fuze is a detonation mechanism in ATGMs that triggers when the missile approaches within a set distance of a target, using sensors like radar or laser to detect proximity.

Sea‑skimming is a low‑altitude flight profile in which a missile or projectile flies close to the sea surface to minimize radar detection and increase survivability.