RADAR WITH CONTINUOUS EMISSION OF BROADBAND LINEAR-FREQUENCY-MODULATED SIGNAL WITH WIDE-ANGLE ELECTRONIC SCANNING OF THE DIRECTIVITY PATTERN OF THE ANTENNA Russian patent published in 2022 - IPC G01S13/02 G01S7/02 H01Q21/00 

FIELD: radio location.

SUBSTANCE: invention relates to radio location equipment and can be used in designing and creating digital radio location stations (radars) with a broadband continuous linear-frequency-modulated signal and wide-angle electronic scanning of the directivity pattern of the antenna. The claimed radar includes a CPU and a slot-waveguide antenna array. The CPU includes: a controller, a digital synthesiser of a broadband continuous probing LFM signal, a sensor of the angular positions of the main lobe of the directivity pattern of the antenna, a first and a second M-channel digital complex adders, an apparatus for processing the sum "beat" signal, apparatuses for primary and secondary processing of radio location information, an apparatus for displaying the results of the radar scan of the space, the output whereof is the information output of the radar. The slot-waveguide antenna array includes M transciever modules (TM) with linear slot-waveguide emitters. Each TM includes two channels - transmitting and receiving, as well as a circulator with a slot-waveguide emitter, a digital weighting factor forming unit, and a digital quadrature demodulator, common to both channels. The transmitting channel of each digital TM includes a first I-channel digital bandpass filter unit, a digital complex multiplier, a digital complex adder, and the input of the first I-channel digital bandpass filter unit is connected to the output of the digital synthesiser of the LFM signal. The receiving channel of each digital TM includes a low-noise amplifier, an analogue-to-digital converter, second I-channel units of digital bandpass filters, digital complex multiplier, digital complex adder, wherein the control inputs of the second I-channel digital multiplier are connected to the corresponding outputs of the digital weighting factor forming unit.

EFFECT: development of a radar with a broadband continuous probing LFM signal and wide-angle electronic scanning of the directivity pattern of the antenna, providing the formation of a two-dimensional directivity pattern, an increase in the diagram formation accuracy, electronic control of the directivity pattern in a wide angular sector with the correction of the distortions of the phase structure of the signal spectrum and the amplitude-phase distribution of the field at the aperture of the antenna, occurring as a result.

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