METHOD AND SYSTEM OF DETERMINING TARGET COORDINATES IN REQUEST-RESPONSE SYSTEM Russian patent published in 2017 - IPC G01S13/75 

FIELD: radio engineering, communication.

SUBSTANCE: method of determining the target coordinates in the request-response system using a predetermined aiming direction of the antenna allows the combination of, at least, three parameters that reflect the target position, the position of the antenna carrier and the aiming direction of the antenna. The parameters used are the distance from the carrier to the target, the height of the target and the height of the carrier, the deviation of the direction to the target relative to the direction of the antenna aiming. The antenna is used, the directivity pattern of which is a funnel. As parameters, the angular position of the carrier in space is additionally used and the predetermined angular direction of the antenna on the target relative to the carrier and also the plane, in which the target is located (the base of the funnel) perpendicular to the direction of the antenna aperture and is obtained by the request-response system from the target and determined with using a digital calculating device (DCD) using a mathematical description of the antenna pattern, a deviation in the local coordinate system (LCS) of the direction antenna of the response signals from the plane perpendicular to the antenna aperture and passing through the center of the antenna aperture. This result is also achieved in that the system implementing the method located on the carrier includes an antenna directed to the target, a request-response system adapted to match, at least, three parameters representing the target position, a carrier position, and the direction of aiming the antenna to determine the target location, a DCD configured to calculate the target coordinates at any position of the carrier and the antenna on the carrier, as well as a height sensor and angular antenna position sensors directed to the target, wherein the first input-output of the request-response system is connected to the antenna directed at the target, the second input-output of the request-response system is connected to the input-output of the digital computing device, the first DCD input is connected to the height sensor output, the system also includes the angular position sensors of the antenna directed at the target, the output of which is connected to the second DCD input. The antenna is made with an aperture in the form of a one-dimensional ruler of radiators, in which the funnel corresponds to the angles of the direction deviation to the target from the plane perpendicular to the antenna aperture line.

EFFECT: increasing the accuracy of determining the target coordinates at any position of the interrogator's antenna relative to the interrogator's carrier and at any position of the interrogator's carrier in space, in case of using an antenna in the form of a one-dimensional ruler of radiators, for which the radiation pattern is a funnel.

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