What role do radar cross-sections (RCS) play in threat assessment?

Radar cross-section (RCS) is a critical parameter in threat assessment because it quantifies how detectable an object is by radar systems. RCS is measured in square meters and essentially represents the equivalent area that reflects radar signals; the larger the RCS, the easier it is for radar systems to detect the object. In threat assessment, understanding an object's RCS helps analysts determine its likelihood of detection, which is vital for evaluating the potential threat it poses.

By knowing an object's RCS, defense systems can better assess risk levels and strategize accordingly to either counteract the threat or prevent detection. This is why RCS serves not just as a measure of visibility but as a fundamental aspect of tactical decisions in surveillance and engagement scenarios.

The other options relate to radar and its functionalities but do not directly link to the role of RCS in threat assessment.