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Surveillance Radars
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Surveillancea
d
a
r
s
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RAdioDetection
And
Ranging
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SecondarySurveillance
Radar
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RADIATING ELEMENTS anddipoles
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radiation pattern8.
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LVA Monopulse Antenna15.
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Cone of Silence17.
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Squawk Codes0000 TO 7777
1200:
7700:
7600:
7500:
Generally used by aircraft under Visual Flight Rules
Used during emergency
User when radio communication fails
Used during hijacking of the aircraft
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PrimarySURVEILLANC
E
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CPIS WAVEFORMSEQUENCE
• un-modulated short pulses for short range (SR) detection
• modulated long pulses for long range (LR) detection
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elevation angle27.
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radar DisplayAircraft Call-sign
current Flight level
climb indicator (arrow)
Ground speed
Cleared flight level
eXit flight level
Track symbols
1 - primary,
2 - secondary
3 - combined
4 - ADS-B
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PrimarySURVEILLANCE
3D RADAR
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Switching and Distribution UnitRadar Central Processor
Receiver and Processing
Groups
Synthesis and Control Group
(PCR)-Processing and Control
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•L-band PSR3D Active Antenna: it contains the solid-state Transmittermodules, redundant Power Supplies, Duplexers, LNA and Control Elements.
Active Antenna Group (AAG):
It includes Antenna Group (AG), Antenna Spine Group (ASG), Pedestal Group
(PG) and AAG Electromechanical Assembly (AAG-EMA)
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L-band PSR3D ActiveAntenna
• Planar phased array antenna
(16 linear arrays)
• Planar array of dipoles with
dual stripline feed networks
• Planar array antenna with
3D Pencil Beam Technique
• Planar array antenna with
vertical electronic scan in
elevation and mechanical
scanning in azimuth
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• range, azimuth and altitude• 3D information for targets
• solid-state technology
• elevation coverage 40º
• Six-level weather map reporting as defined by the NWS/ICAO standard
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Frequency Band1250-1350 MHz (L band)
3 pulses
1st in the frequency X,
2nd in the frequency X+3MHz
3rd in the frequency X+15.54MHz
Minimum/Maximum
Range
0.5 NM / 120 NM
Peak Power
16 kW ±10%
Architecture
Based on 16 solid-state LDMOS HPA modules
Vertical Coverage
Up to 40º
Resolution
Resolution in slant range for two targets in the same azimuth ≤ 200 m
Resolution in azimuth for two targets at the same slant range ≤ 2º