Description of the radar set, tactical-technical characteristics
Figure 1: S 654
|frequency:||1 295 … 1 365 MHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||590 or 350 Hz|
|pulsewidth (τ):||2.5 or 4 µs|
|peak power:||0.8 or 2.3 MW|
|instrumented range:||100 or 180 NM|
(≙ 185 or 333 km)
|hits per scan:|
|antenna rotation:||7.5 or 15 rpm|
S 654 was operating in L-Band air surveillance radar usable for air traffic management. It could be used both as an en-route radar and, with reduced transmit power, as a terminal area radar.
The antenna used two antenna patterns staggered in elevation angle (high and low beam) for more effective fixed target suppression. The high-powered transmitter of type SR-1030 uses a water-cooled magnetron. Radar signal processing already provided a synthetic representation of the air situation on the displays.
The radar was built in the early 1960s.