Description of the radar set, tactical-technical characteristics
Figure 1: RL-4AS
|frequency:||2.7 … 2.9 GHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||600 Hz|
|pulsewidth (τ):||2 µs|
|peak power:||2 × 800 kW|
|instrumented range:||110 NM (≙ 200 km)|
|hits per scan:|
|antenna rotation:||6 or 12 rpm|
RL-4AS was operating in S-Band Terminal Area Radar (TAR) intended for military air traffic control near airport. The RL-4 radar is a product of the former Tesla company. Eldis upgraded it to RL-4AS in 1994-1998.
The parabolic reflector with dimensions of 5 × 3,5 m provided a cosecant squared pattern. The antenna used two horn radiators for high- and low-beam patterns to improve fixed-target rejection. It can be selected linear or circular polarization. A magnetron was used in the transmitter. A mobile version was installed on a TATRA-148 truck.