Description of the radar set, tactical-technical characteristics
|frequency:||2.7 - 3.4 GHz|
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):|
|pulsewidth (τ):||20 µs|
|peak power:||13,5 kW|
|instrumented range:||110 NM (≙ 220 km)|
|range resolution:||200 m||100 m|
|accuracy:||±100 m; ±0.5°||±50 m; ±0.3°|
|hits per scan:|
|MTBCF:||> 800 h|
|MTTR:||< 0.5 h|
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 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.