Description of the radar set, tactical-technical characteristics
Bild 1: Astre 2000 in Paris/Orly
|frequency:||15.7 bis 16.7 GHz|
|pulse repetition time (PRT):||122 Microseconds|
|pulse repetition frequency (PRF):||8192 Hertzes|
|pulsewidth (τ):||40 Nanoseconds|
|peak power:||22 to 24.9 kW|
|beamwidth:||β=0,33 Degrees ε=3,5 Degrees|
|hits per scan:|
|antenna rotation:||1 Second|
Surface Movement Radar ASTRE 2000
The Surface Movement Radar ASTRE 2000 is (or was) installed at the locations Athens, Berlin-Tegel, Dublin, Edinburgh, Heathrow, Milan, Moscow, Orly, Prague, Stansted, Vienna and others.
The radar uses a parabolic reflector antenna with an inverted cosecant squared diagram. It is a frequency diversity radar with two independently operating transmitters/receivers. The signal processing is also duplicated and every channel has a second signal input for the other one channel. A remotely operated switch selects the video of one of the channels for display. The output signal to the remote display units is a multiplex signal on a coaxial line with the individual and sum video as well as the synchronous pulses.
Nowadays the Radom and the ASTRE 200 is decomposed on the control tower Berlin- Tegel (TXL) visibly over a long distance. Instead of this one, a Scanter SMR antenna turns round.
Picture gallery of ASTRE 2000
Figure 3: ASTRE 2000 under a radome on the tower in Berlin-Tegel