RHRS-2014
SP - 1
E3614S01G
121022
SPECIFICATIONS OF RIVER RADAR
RHRS-2014
1 ANTENNA
UNIT
1.1 Radiator type
Slotted waveguide array
1.2 Polarization
Horizontal
1.3 Antenna rotation speed 26 rpm (RSB-120A) or 48 rpm (RSB-121A) nominal
1.4 Radiator length
255 cm (XN24AR), 216 cm (XN21AR)
1.5 Horizontal beam width
-3dB: 0.95° (XN24AR), 1.12° (XN21AR)
-20dB: 2.5° (XN24AR), 2.84° (XN21AR)
1.6 Vertical beam width
-3dB: 25°
1.7 Sidelobe attenuation
Within ±10° of main-lobe: less than -26 dB
Outside ±10° of main-lobe: less than -32 dB
1.8 Antenna gain
31.0 dB (XN24AR), 30.0 dB (XN21AR)
1.9 Wind load
100 km/h relative
2 RF
TRANSCEIVER
2.1 Frequency
9410 MHz ±30 MHz (X band)
2.2 Modulation
P0N
2.3 Peak output power
4 kW nominal
2.4 Range, Pulselength, Pulse Repetition Rate (PRR)
River mode
Range
(km) Pulselength (
P
s)
PRR (Hz)
S
0.125 to 4
0.04
4000
M1
4 to 8
0.12
2000
M2
8 to 32
0.28
2000
L
16 to 64
0.6
1000
Sea mode (1)
Range
(NM/SM)
Pulselength (
P
s)
PRR (Hz)
S
0.125 to 2
0.04
4000
M1
1.5 to 4
0.12
2000
M2
3 to 16
0.28
2000
L
6 to 64
0.6
1000 (750 for 64 NM/SM)
Sea mode (2)
Range
(km/kyd) Pulselength (
P
s)
PRR (Hz)
S
0.125 to 4
0.04
4000
M1
3 to 8
0.12
2000
M2
6 to 32
0.28
2000
L
12 to 64
0.6
1000
2.5 Modulator
FET
switching
2.6 Intermediate Frequency 60 MHz, Logarithmic amplifier
