Airborne Collision Prevention Control refers to systems or technologies designed to prevent mid-air collisions between aircraft. These systems use a combination of sensors, software, and communication protocols to detect and respond to potential collision threats.

There are several types of Airborne Collision Prevention Control systems, including:

1. Traffic Collision Avoidance System (TCAS): A safety system that uses radar and computer algorithms to detect nearby aircraft and provide warnings and instructions to pilots to avoid collisions.
2. Automatic Dependent Surveillance-Broadcast (ADS-B): A system that uses GPS and other sensors to track an aircraft's position and velocity, and broadcasts this information to other nearby aircraft and air traffic control.
3. Airborne Collision Avoidance System (ACAS): A system that uses a combination of sensors and algorithms to detect nearby aircraft and provide warnings and instructions to pilots to avoid collisions.
4. Sense-and-Avoid (SAA) systems: Systems used on unmanned aerial vehicles (UAVs) to detect and avoid other aircraft and obstacles.

These systems typically work by:

1. Detecting nearby aircraft using sensors such as radar, lidar, or cameras.
2. Tracking the position, velocity, and trajectory of nearby aircraft.
3. Analyzing the data to determine the likelihood of a collision.
4. Providing warnings and instructions to pilots to take evasive action, such as changing altitude or course.
5. Automatically controlling the aircraft to avoid a collision, in some cases.

The goal of Airborne Collision Prevention Control systems is to reduce the risk of mid-air collisions and improve aviation safety. They are an important component of modern aviation safety systems, and are used by commercial airlines, general aviation, and military aircraft around the world.