In the context of aviation and aerospace, "ADS-rebroadcast" (also known as "ADS-R" or "Automatic Dependent Surveillance - Rebroadcast") refers to a method of disseminating Automatic Dependent Surveillance-Broadcast (ADS-B) data to other aircraft and air traffic control systems.

Here's how it works:

1. An aircraft equipped with an ADS-B transmitter broadcasts its position, altitude, velocity, and other relevant information to nearby receivers.
2. The ADS-B data is received by a ground station or a nearby aircraft with an ADS-B receiver.
3. The received ADS-B data is then "rebroadcast" to other aircraft and air traffic control systems, creating a network effect that enables multiple stakeholders to access the same data.

The benefits of ADS-rebroadcast include:

• Improved situational awareness: By sharing ADS-B data, aircraft and air traffic control can gain a more comprehensive understanding of the airspace and surrounding traffic.
• Enhanced safety: ADS-R helps to reduce the risk of collisions by providing more accurate and up-to-date information about nearby aircraft.
• Increased efficiency: ADS-R can help to optimize air traffic flow, reducing delays and improving overall air traffic management.

ADS-rebroadcast is an important concept in modern aviation, as it enables the creation of a more connected and collaborative airspace, where aircraft and air traffic control can share information and work together to ensure safe and efficient flight operations.