re - antenapata in da - bi of n - mu compressed treatment manner

摘要

PURPOSE: To remove the deformation of pattern while a beam compression processing is applied to a rader, in the beam compression processing method for antenna pattern where the principle of multiplication-type array is used. ;CONSTITUTION: A sub-antenna element 2 is placed adjacent to a main antenna element 1 in the beam width direction to be reduced in a manner that their beam axes will be aligned, in order to construct an antenna system, and the antenna beam of the antenna system is scanned in the beam width direction to obtain the reception signals by respective antenna elements 1 and 2, then the signals are multiplicated and signal-processed by matching the phase in a multiplication circuit and a signal processing circuit 4. At this time, when the ratio of the value of synthesized reception pattern output signal for rader display obtained through the multiplication processing to the maximum set value for a rader display exceeds the preset value, the reception signal for rader display of the element 1 corresponding to the angle range of beam width of the synthesized reception pattern output signal for rader display is outputted instead of the synthesized reception pattern output signal for rader display, and in other cases, outputting is interrupted.;COPYRIGHT: (C)1994,JPO&Japio