METHOD OF CORRECTION OF THE AMPLITUDE-PHASE DISTRIBUTION OF OPENED ANTENNA ARRAY Russian patent published in 2023 - IPC H01Q21/00 H01Q3/26 G01S7/40 

FIELD: antenna technology.

SUBSTANCE: invention relates to antenna technology and can be used to correct the amplitude-phase distribution (APD) in the opened antenna arrays (AA) of radar stations (RS) operating after deployment on a carrier. A method for correction of the APD is proposed, in which an internal calibration procedure is carried out for each of the N transmitting and receiving modules (TRM) as part of each of the M sections of the AA. At the first stage, the TRM is calibrated with the standard deployment of the AA in the ground position before they are installed on the standard carrier by supplying calibration signals (CS) from the internal generator to the inputs of the calibrated receiving channels of each TRM, and a sequence of coherent radio impulses is used as the CS, the power of each of which lies within the power of the signals coming to the inputs of the receiving channels of the TRM channels in the regular operation mode of the RS. At the second stage, calibration of all TRM is carried out when deploying the AA on the carrier by receiving signals from the ground control point. At the same time, the phase distribution of the signals at the outputs of the receiving channels of all the TRM, obtained at the first stage of calibration, is used as a reference. Based on the comparison of the calibration results obtained at the first and second stages, calibration coefficients are formed to control the complex transmission coefficients of the calibrated receiving channels of all TRM. The calibration results at the second stage are used for alignment of opened sections of the AA, providing compensation for phase distribution errors caused by the deviation of the location of opened sections of the AA from the standard one.

EFFECT: improving the accuracy of the formation of the AA pattern with the specified parameters in the radiation and reception modes based on ensuring the accuracy of the alignment of the position of the disclosed sections of the AA when they are deployed.

1 cl, 4 dwg