1RL144
Description of the radar set, tactical-technical characteristics

Figure 1: 1RL144
Specifications | ||
---|---|---|
Hot Shot | A | B |
frequency: | S-Band | X-Band |
pulse repetition time (PRT): | ||
pulse repetition frequency (PRF): | ||
pulsewidth (τ): | ||
receiving time: | ||
dead time: | ||
peak power: | 10 kW | 150 kW |
average power: | ||
instrumented range: | 20 km | 18 km |
range resolution: | ||
accuracy: | 20 m; 1° | 2 m; 2 min |
beamwidth: | ||
hits per scan: | ||
antenna rotation: | ||
MTBCF: | ||
MTTR: |
1RL144
The 1RL144 (NATO designation: “Hot Shot A”) is a 3D surveillance and target acquisition radar of the hybrid (combined anti-aircraft missile and gun) air defense system 2S6M “Tunguska” operating in S-band.
The radar’s single-curved parabolic antenna is mounted to the rear of the turret. A 1RL138 secondary radar operating in the UHF band is integrated. The rotation of the antenna is electromechanically position-stabilized and can also be used while the vehicle is in motion. It generates multiple antenna patterns approximately 5° wide in elevation angle up to an elevation angle of 15°. The radar feeds its data into a central computer, designated 1A26, for weapon control.
The air defense system is equipped with an additional multifunction radar operating in the X-band for target tracking, which is mounted between the gun barrels (NATO designation: “Hot Shot B”). This radar operates as a target-tracking radar using the monopulse method to control the anti-aircraft guns. It uses a circular parabolic antenna and transmits pulse-position modulated codes to guide the missiles. When the missile is only about 1 000 m from the target, it operates as a target-illuminating radar NDZ (Russian designation: радиолокационный неконтактный датчик цели, НДЦ) for the radio igniter in the missile. The radar then operates as a bistatic radar for semi-active target tracking.