RADAR SYSTEM OF VERY-HIGH FREQUENCY BAND AND LOW-FREQUENCY PART OF AN ULTRA HIGH FREQUENCY BAND WITH IDENTIFICATION SYSTEM Russian patent published in 2018 - IPC G01S13/04 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering and can be used in radar systems consisting of an active primary locator mainly very-high frequency band and low-frequency part of an ultra high frequency band and a ground-based radio interrogator (secondary radar) with an identification system. Achieved technical result is increased stealth, survivability of radar systems containing an active primary radar operating in the very-high frequency band and low-frequency part of an ultra high frequency band, and a ground-based radio interrogator, by reducing the possibility of detection and destruction with air-to-ground anti-radar missiles. This technical result is achieved by the fact that a radar system comprising at least one active primary radar operating in the very-high frequency band and low-frequency part of an ultra high frequency band, and a ground-based radio interrogator that consists of two independent parts: transmitting part, having only the main channel transmitter emitting only the request signals, attached to its antenna installed at a safe distance from the primary radar and receiving part, having the main channel equipment with an antenna and the sidelobe suppression channel equipment with an antenna, wherein the antennas of the receiving part have direction patterns that ensure that the level of the response signals in the primary channel exceeds the level of the response signal in the sidelobe suppression channel in the main lobe region of the direction pattern and that the level of response signals in the sidelobe suppression channel exceeds the level of the response signals in the main channel in the side lobe region of the main channel antenna. Antennas and equipment of the receiving part can be installed in the immediate vicinity of the primary radar or combined with the antenna and the equipment of the primary radar. Additional result is achieved by the fact that additional equipment, receiving the request signals of the transmitting part of the terrestrial radio interrogator and allowing to determine the delay time of the request signals, is installed in the receiving part of the terrestrial radio interrogator (secondary radar).

EFFECT: additional technical result is determination of the distance to the target by the radio interrogator.

1 cl, 1 dwg