In the context of air defense, what does 'Defense in Depth' refer to?

'Defense in Depth' in the context of air defense refers to a multi-layered defense strategy designed to provide comprehensive protection against potential threats. This approach involves creating several layers of defense to detect, engage, and neutralize an enemy's capabilities at various distances and altitudes, effectively complicating their attack plans and increasing the chances of successfully defending against them.

The concept emphasizes the importance of redundancy throughout the defense structure; if one layer is breached or fails to intercept an enemy attack, subsequent layers still stand ready to offer protection. This strategy relies on the integration of various systems and platforms, including early warning radars, interceptors, and electronic warfare capabilities, creating a robust and resilient defense mechanism.

In air defense, a multi-layered approach not only maximizes the chances of interception but also acts as a deterrent against potential aggressors who must contend with the complexity and depth of the defensive measures in place.