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IFF/SIF - Siemens 1990

IFF - Antenne
(click to enlarge: 400·440px = 28 kByte)
Figure 2: monopulse antenna of the
secondary radar „Siemens 1990” without its cover

This secondary radar is used in the civil and military air traffic management and by the air defense radar systems. The radar got different designators and abbrevations:

ASR 910 with the IFF-Beacon
Figure 1: At this picture the IFF- monopulse antenna is mounted at the top of the primary radar antenna (ASR-910)

The characteristics of this system are standardisated by Eurocontrol.

Specifications
frequency: 1030 / 1090 megahertzes
pulse repetition time (PRT): synchronuous to the primary radar
pulse repetition frequency (PRF): synchronuous to the primary radar
pulsewidth (PW): depending on mode
receive time:  
dead time:  
peak power: up to 2 kilowatts
average power: up to 100 watts
displayed range: up to 250 nautical miles
range resolution: 500 m
beamwidth: 10 degrees
hits per scan: 3 ... 5
antenna rotation: synchronuous to the primary radar

Publisher: Christian Wolff
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