Accession Number : ADP005446

Title :   Monopulse Secondary Radar: Practical Realization and Achievement Mode S: The Radar of Tomorrow,

Corporate Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRANCE)

Personal Author(s) : Delille,Francois

Report Date : DEC 1986

Pagination or Media Count : 15

Abstract : There can be no doubt that Mode S will be part of tomorrow's ATC radar. Its assets in terms of air traffic surveillance and data link are recalled. Fundamental characteristics are its compatibility with existing SSR's, selective interrogation and monopulse reception. The monopulse SSR is a landmark in the transition towards Mode S; it contributes several major improvements, without requiring onboard transponders to be changed. Choices made in implementation of the system are discussed, in particular as regards the antenna, transmitter, reception and processing techniques. Through these options, full Mode S compatibility is maintained. Practical results have turned out to be conclusive, and so the system was taken into production and already many stations are operational round the world. The Mode S extension which has to be added the monopulse radar is also described, and it is being operated at Orly as part of an experimental development programme.

Descriptors :   *DATA LINKS, *AIR TRAFFIC CONTROL SYSTEMS, *MONOPULSE RADAR, RADAR STATIONS, AIRPORT RADAR SYSTEMS, AIR TRAFFIC, SURVEILLANCE, SEARCH RADAR, SECONDARY, ADDRESSING, DATA PROCESSING, FRANCE

Subject Categories : Air Navigation and Guidance
      Telemetry
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE