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ST68UM “36D6”

Description of the radar set, tactical-technical characteristics

Figure 1: The “36D6” air defence radar forms part of the POLEST-68UM station

frequency: 2 850 … 3 200 MHz
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ):
receiving time:
dead time:
peak power: 350 kW
average power: 3 kW
instrumented range: 200 km
range resolution: 250 m
hits per scan:
antenna rotation: 6 and 12 rpm.

ST68UM “36D6”

ST68UM (Russian designator 36D6, Cyrillic: СТ-68УМ «Нива», 36Д6) is an air surveillance and assignment radar for missile control systems of the former Soviet Union.

The “36D6” is a mobile 3-D system designed to detect air targets at low, medium and high altitude. The system incorporates an identification friend-or-foe function and can also be employed as part of the C-300 surface-to-air missile complex. The complete “36 D 6” system consists of the antenna, turning gear, electronics and operations cabin on one trailer (like “Tin Shield”), and a second trailer for the power supply (Power consumption: 57 kW). The antenna can also be mounted on a tower, up to a height of 23 m, which is carried on a third trailer.

The raw data processor enables constant false alarm rate (CFAR), range ambiguity rejection, and rejection of ground clutter by the use of a digital moving target indicator. Some 127 targets can be processed simultaneously, and 32 are then processed in the automatic tracking mode. The air situation data is routed in digital format to three operators' workstations, connected in parallel. The target data is provided on displays in alphanumeric format which enables the operator to detect the target even in severe environmental and jamming conditions, to identify it, and to localise the target.

The “36 D 6” has remote control of operation modes and a built-in test system, with communications facilities for transmision of information to the command structure. The radar system features high-resistance to active and passive jamming, and to anti-radiation missiles. It can be deployed or dismantled in one hour (two hours if the antenna is mounted on a tower).

Picture gallery of ST68UM

Figure 2: ST68UM from Hungaria, a guest in Germany during the exercise “Elite 2007”