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ASRAirport Surveillance Radar

NEC's Airport Surveillance Radar (ASR) is a high performance S-Band radar system designed to provide air traffic controllers with reliable and clear picture of air traffic within its coverage area.

Latest solid-state and digital processing technologies are used to realize improved ground and weather clutter suppression and interference-free output.
Based on its more than 50 years of unique experiences of serving worldwide customers, NEC offers integrated advanced technologies listed below to meet each customer's requirements.

imageASR Tower

  • Benefiting in fully solid-state transmitter and signal processing technologies with system stability
  • Clutter rejection by use of dual beam antenna and multi-doppler filter technologies
  • A high level of data availability by sliding-window technique to provide aircraft and weather data simultaneously
  • Digital pulse compression technique
  • Redundant architecture based on a fault tolerant transmitter and duplicated receivers and processing channels with automatic switchover
  • Easy and safe maintenance

imageASR Antenna
imageTransmitter

Technical Characteristics

 
Frequency 2,700 to 2,900 MHz
Typical instrumented range 80 nmi. / 45,000ft. 80 nmi. / 26,000ft. 60 nmi. / 22,000ft. 60 nmi. / 35,000ft.
Radar Cross Section 2 ㎡ 15 ㎡ 15 ㎡ 2 ㎡
Accuracy (range/azimuth)

≦ 150 m (range)

≦ 1.5° (azimuth)

≦ 150 m (range)

≦ 1.5° (azimuth)

≦ 150 m (range)

≦ 1.5° (azimuth)

≦ 150 m (range)

≦ 1.5° (azimuth)

Pulsewidth (Long/Short) 1 μS / 80 μS 1 μS / 80 μS 1 μS / 80 μS 1 μS / 80 μS
Transmitter Modules 90 54 16 24
Peak Power 50 kW 32 kW 10 kW 16 kW
Antenna Gain ≧ 34.5 dB ≧ 34.0 dB ≧ 34.0 dB ≧ 33.0 dB
Polarization Linear / circular Linear / circular Linear / circular Linear / circular
Rotation rate 15 rpm 15 rpm 15 rpm 15 rpm
Beamwidth 1.3 deg. 1.3 deg. 1.3 deg. 1.4 deg.
Receiver Subclutter visibility ≧ 35 dB ≧ 35 dB ≧ 33 dB ≧ 35 dB
Pulse compression ratio 80:1 80:1 80:1 80:1
Noise figure ≦ 1.6 dB ≦ 4 dB ≦ 4 dB ≦ 1.6 dB
MTI processing

6-pulse

Multi doppler filter

6-pulse

Multi doppler filter

6-pulse

Multi doppler filter

6-pulse

Multi doppler filter

Weather processing 6 level 6 level - 4 level
Communications
ADS/CPDLC
Navigation
GBAS
MSAS
MSV
Surveillance
ASR
SSR
Air Traffic Control
TRCS
ARTS

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