Target detection station of Tunguska complex

Tunguska" combat vehicle target detection station is a coherent pulse radar with a circular view of the decimeter wavelength range. High stability of the transmitter frequency, made in the form of a setting generator and amplifier circuit, the use of filter circuit selection of moving targets provides a high coefficient of suppression of reflections from local objects (30 ... 40 dB), which allows the detection of targets against the background of intense reflections from the underlying surface and in passive interference. The selection of carrier frequency values and pulse repetition frequency was achieved unambiguous definition of range and radial velocity, which made it possible to implement target tracking by distance and azimuth, automatic target designation of the target tracking station and the current range output to the digital computer system when the enemy set the intensive interference in the range of the tracking station. To ensure the operation in motion, the antenna was electromechanically stabilized using signals from sensors of the swing measurement system and the self-propulsion course.

With the impulse power of 7-10 kW transmitter, receiver sensitivity of about 2x10E-14 W, width of the antenna's orientation diagram by 5° azimuth and 15° angle, the station with the probability of 0.9 provided detection of the fighter flying at altitudes 25-3500 m at a range of 16-19 km. The station's resolution was 500 m in range, 5-6° in azimuth and within 15° on the corner of the place. Mean-square target coordinate errors were within 20 m range, 1° azimuth and 5° angle.