active-guidance system
Quick Summary
Active guidance systems enable a missile to track its target by generating its own emissions. This method is commonly used for terminal homing in missiles such as antiship, surface-to-air, and air-to-air types, which utilize self-contained radar systems. A drawback of active guidance is that its emissions can be detected, jammed, or decoyed. This contrasts with semiactive guidance, where the missile homes in on energy reflected from a target illuminated by an external source. Inertial guidance systems, on the other hand, use gyroscopes, accelerometers, and computers to navigate without external communication.123
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