Description of the radar set, tactical-technical characteristics
Figure 1: AR-325 Commander
|frequency:||2 700 … 3 100 MHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||270 … 1 400 Hz|
|pulsewidth (τ):||max. 200 µs|
|peak power:||135 kW|
|average power:||7.5 kW|
|instrumented range:||250 NM (≙ 470 km)|
|hits per scan:|
AR-325 Commander is operating in E/F-Band long range 3-D air surveillance radar. The AR-325 Commander is the founder member of a family of radars, satisfying a range of operational long-range air defence requirements. It is smaller than the AR-320 in order to increase mobility. This includes the need for only one shelter in most cases, compared with an average of three for the AR-320.
AR-325 Commander uses an ultra-low sidelobe planar array antenna that has a very narrow vertical beamwidth of 1.5 degrees and an azimuth beamwidth of 1.4 degrees. It is a frequency scanned phased array. The AR-325 console has been developed from the Watchman display.
The AR-326 Commander is a derivative of the AR-325 with enhanced electronic counter-countermeasures facilities. These improvements are claimed to make the AR-326 radar a NATO Class 1 system.
The AR-327 Commander uses a traveling wave tube to achieve frequency diversity gain. Due to the principle of the frequency scanning array, however, both sub-frequencies have a slightly different side and elevation angle. It is a predesessor of AR-327 Commander SL.
The AR-328 Commander is a tactically mobile NATO Class 1 radar.