What function does IFF serve in terms of air traffic?

The function of Identification Friend or Foe (IFF) is to distinguish friendly units from hostile ones. IFF is a crucial system used primarily in military operations and air traffic management. It operates by sending an interrogation signal from a friendly radar system that elicits a specific response from an IFF transponder in aircraft, ships, or other units. This response identifies the unit as friendly, helping to prevent friendly fire incidents and enhancing situational awareness for military personnel.

In a broader context, accurate identification of both air and surface assets allows for better decision-making, coordination among friendly forces, and overall mission success. The ability to quickly ascertain whether a contact is friendly or hostile is vital, especially in environments where many units may be operating simultaneously.

While civilian air traffic guidelines and control of onboard systems are essential aspects of aviation management, they do not directly relate to the specific objective of IFF. Similarly, IFF is not designed to detect submarines, which falls under different technological systems and methodologies.