METHOD OF CORRECTION OF AMPLITUDE-PHASE CHARACTERISTICS OF PRIMARY CHANNELS OF FLAT DIGITAL ARRAY Russian patent published in 1998 - IPC

FIELD: radio engineering, radars and sonars, systems of satellite communication. SUBSTANCE: proposed method of correction of amplitude-phase characteristics of primary channels of flat digital array is based on feed of calibration signal to input of array, on execution of analog-digital conversion of signals, on extraction of their quadrature components, on generation of responses of primary channels to calibrated source of correction factors by complex voltages, on their storage and subsequent usage to weigh voltages of output signals during routine operation. Quadrature components of correction factors are found by series of N time readings in the form of , where αC(S)rq

is cosine (sine ) component of correction factor of rq-th primary channel of digital array located in r-th line of q-th column, , are quadrature components of response of rq-th primary channel of digital array in i-th time reading; x_r, x_q are generalized coordinates of calibration source relative to normal of digital array; λ length of radiation wave of calibration source; d_r, d_q are distances between elements of array in line and in column; R, Q are numbers of elements in line and column of digital array; β,ε are angular coordinates of calibration source; . EFFECT: improved efficiency of method. 9 dwg