Digital monopulse radar automatic amplitude and phase calibration method, system, device and medium
A monopulse radar and calibration method technology, applied in the field of radar, can solve problems such as difficulty in antenna alignment, and achieve the effects of improving calibration and debugging efficiency, saving time and cost, and improving accuracy
Active Publication Date: 2022-05-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
[0012] Aiming at the problem of difficult antenna alignment when calibrating W-band digital monopulse radar, an object of the embodiment of the present invention is to provide a fast and accurate method for automatic amplitude and phase calibration of digital monopulse radar
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[0061] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. For the step numbers in the following embodiments, it is only set for the convenience of illustration and description, and the order between the steps is not limited in any way. The execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art sexual adjustment.
[0062] In the description of the present invention, multiple means two or more. If the first and the second are described only for the purpose of distinguishing technical features, it cannot be understood as indicating o...
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The invention discloses a method, system, device and medium for automatic amplitude and phase calibration of a digital monopulse radar. The method includes: receiving a first calibration signal through a digital monopulse radar located at a first position, and performing fast Fusion on the first calibration signal. The first frequency domain signal is obtained by Liye transform, and then the first amplitude phase value vector is determined; the digital monopulse radar is controlled to rotate to the second position, the third position, the fourth position and the fifth position, and the second position of the digital monopulse radar is determined. The amplitude phase value vector, the third amplitude phase value vector, the fourth amplitude phase value vector and the fifth amplitude phase value vector; determine the receiving calibration coefficient and the first gradient vector of the digital monopulse radar; determine that the first gradient vector satisfies the preset The convergence condition is to receive the second calibration signal transmitted by the digital monopulse radar, and then determine the transmission calibration coefficient of the digital monopulse radar. The invention improves the efficiency and accuracy of the calibration and debugging of the digital monopulse radar, and can be widely used in the technical field of radar.
Description
technical field [0001] The invention relates to the technical field of radar, in particular to an automatic amplitude and phase calibration method, system and storage medium of a digital monopulse radar. Background technique [0002] Before the W-band digital monopulse radar system is put into use, each channel of the antenna and the corresponding radio frequency link must be calibrated for sending and receiving amplitude and phase, so that the sum and difference patterns of the antenna meet the design requirements and ensure the accuracy of angle measurement. Applying the digital amplitude-phase calibration technology, the amplitude-phase calibration of the multi-channel radio frequency link and the amplitude-phase calibration of the antenna channel can be completed at the same time, improving the accuracy and efficiency of the calibration. Because the W-band radar antenna has the characteristics of high gain and narrow beam, it is difficult to align the radar system antenn...
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IPC IPC(8): G01S7/40
CPCG01S7/4004G01S7/4026
Inventor 姚晨张毅孙厚军
Owner BEIJING INSTITUTE OF TECHNOLOGYGY