JY-11 “Hunter-1”
Description of the radar set, tactical-technical characteristics
Figure 1:
| Specifications | ||
|---|---|---|
| JY-11 | JY-11B | |
| frequency: | 2.7 - 3.4 GHz | |
| pulse repetition time (PRT): | ||
| pulse repetition frequency (PRF): | ||
| pulsewidth (τ): | 20 µs | |
| receive time: | ||
| dead time: | ||
| peak power: | 13,5 kW | |
| average power: | ||
| instrumented range: | 110 NM (≙ 220 km) | |
| range resolution: | 200 m | 100 m |
| accuracy: | ±100 m; ±0.5° | ±50 m; ±0.3° |
| beamwidth: | 2.5° | 1.8° |
| hits per scan: | ||
| antenna rotation: | ||
| MTBCF: | > 800 h | |
| MTTR: | < 0.5 h | |
JY-11 “Hunter-1”
The JY-11 is an equipped with state-of-the-art semiconductor technology 3-D air surveillance radar and is mainly used as to provide medium to low altitude target-indication for AAA battery or SAM unit. It is often used as a gap-filler for a regional air defence network. The radar uses a phased array that scans electronically in elevation while rotating in azimuth. The electronic beam deflection is performed by a frequency scanning array. The JY-11 radar uses 14 different beams to cover an elevation range of 30º. Two of the beams are used for wide area detection, and four layers of each 3 beams serve to cover medium ranges.
The radar provides high sidelobe attenuation, high immunity to interference and a constant false alarm rate.
The mobile system is composed of an antenna/transmitter unit, radar electronic and operator shelter, and a supply shelter containing a diesel generator set which can be transported with a total of 3 trucks. It is transportable by land, sea or air (C-130, CH-53). Deployment and withdrawal are largely automated within 20 minutes.
JY-11B
JY-11B is a self-propelled version with enhanced accuracy and maximum range. This radar can raise its antenna which is mounted on a a hydraulically controlled tower to improve the radar coverage against targets flying at very low altitude.
