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KRA-3002/KRA-4001

Open-Array Radar Antenna

 

Features

  • Digital Radar Target Technology
  • Share the same protocol between all ONWA magnetron pulse Radar antennas
  • Built-in excellent sea and rain clutter algorithm
  • Fully Digital Signal Processing
  • High Performance Microwave front end
  • Can be connected to PC directly or through home router
  • Can use with DigiNav Application Software
DigiNav

 

Connection

KRA-3002/5002 Connection

 

Specifications

 Antenna Radiator 

Radiator
Slotted waveguide Array
Radiator Length
KRA-4001: 120 cm
KRA-3002: 180 cm
Antenna Rotation Speed
24RPM
Beam Width
Horizontal:
KRA-3002: 1.2°
KRA-4001: 1.9°
Vertical
KRA-3002: 22°
KRA-4001: 22°
Sidelobe
Within ± 20° off mainlobe; less than -24 dB
Outside ± 20° off mainlobe; less than -30 dB
Polarization
Horizontal
Wind Resistane
KRA-4001: Relative Wind Speed 100 knots (51.5 m/s)

 

 Transceiver Module (contained in Antenna) 

Transmitting Tube
KRA-3002: MSF1425
KRA-4001: MAF1422 or MSF1422
Frequency
9410 ± 30MHz (X-band)
Pulse Length PPR
0.08 µ S/2100 Hz(0.125, 0.25, 0.5, 0.75, 1.5 nm)
0.3µ S/1200 Hz(1.5, 2, 3 nm)
0.8 µ S/600 Hz(3, 4, 6, 8, 12, 16, 24, 36,48, 64,72 nm)
Warm Up time
1:30 minutes
Peak Output Power
KRA-3002: 12.5 kW nominal
KRA-4001: 6 kW nominal
Modulator
FET Switching Method
IF
60MHz
Tuning
Automatic or Manual
Receiver front end
MIC (Microwave IC)
Bandwidth
Tx pulselength 0.3 µ S and 0.08 µ S: 25 MHz
Tx pulselength 0.8 µ S: 3 MHz
Duplexer
Circulator with Diode Limiter

 

 Environment 

Temperature
Antenna unit: -25 to +70°C
Humidity
Relative humidity 93% or less at 40°C

 

 Power Supply 

±12VDC external regulated power supply

 

Dimensions