Introduction to ADS-B
Automatic Dependent Surveillance-Broadcast (ADS-B) is a surveillance system that enables aircraft to receive data from navigation satellites via a global navigation satellite system (GNSS) receiver.
The aircraft then broadcasts information, up to twice a second, on its identification, position, altitude, speed, and intention. The broadcast system is the ADS-B transponder. ADS-B IN systems provide aircraft with the ability to ‘see’ and receive information from other ADS-B OUT equipped aircraft in range. The data received by ground stations is then transmitted to the air traffic management (ATM) system for display to air traffic controllers who use it to maintain aircraft separation in controlled airspace. This is different from the existing surveillance system, in which information about an aircraft’s position is obtained through radar signals.
ADS-B OUT Timeline
The mandates for ADS-B OUT are in two stages:
Benefits of ADS-B OUT
ADS-B provides better surveillance coverage and more accurate data, which improves safety and operating efficiency.
The main benefits of ADS-B OUT for you as an owner/operator are:
The New Zealand ADS-B system
New Zealand will implement the 1090 MHz extended squitter (ES) ADS-B surveillance system. No other system is proposed to be approved for use in this country.
Squitter refers to the way data is transmitted by a Mode S transponder. Extended squitter refers to the extra data required to transmit the information required for ADS-B.