This part specifies the surveillance data architecture, surveillance data classification, surveillance data elements, message structure, expression rules, data transmission sequence, data source identification and data link control procedures in the air traffic control system surveillance data exchange. This section applies to the definition, encoding, exchange and transmission of various information data types involved in air traffic control system surveillance data exchange.
SJ 20978.1-2007 history
2008SJ 20978.1-2007 Specifications for air traffic control system surveillance data exchange.Part 1: General structure