KRA-3002/KRA-4001

Open-Array Radar Antenna

Brochures And Manuals

KRA-3002/ KRA-4001
Brochure

KRA-3002 / KRA-4001
User Manual

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

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

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