Automatic Dependent Surveillance–Broadcast (ADS-B) is an advanced surveillance technology combining aircraft positioning sources, avionics, and ground infrastructure. It provides real-time precision and shared situational awareness between aircraft and air traffic control. ADS-B enhances safety and efficiency in airspace management, offering more accurate tracking than traditional radar systems. With both ADS-B Out and ADS-B In capabilities, it represents a significant advancement in aviation surveillance technology.