MULTIPLE DIRECTION INTERFERENCE SUPPRESSION BY UNIFORM LINEAR PHASED ARRAY SIDELOBE EFFICIENT CANCELLER

Background. For radar systems, the beam pattern of a uniform linear array (ULA) is synthesized to ensure signal selectivity by direction. A specific ULA sidelobe cancelled rescaling weights. In particular, this done increasing number sensors and shortening scanning step. However, noticeable limitation loss transmitted power. Therefore, problem optimally balance versus effective cancellation.
 Objective. order multiple direction interference suppression, goal find an optimal for synthesis. The criterion determine such minimum these at which mainlobes towards useful directions are evened as much possible.
 Methods. To achieve said goal, cancellation simulated. simulation configured carried out using MATLAB® R2020b Phased Array System ToolboxTM functions based on algorithm Results. By sensors, lobes not only thinned but also change in their sidelobes become relatively stronger. limited three influencing factors: thinned-array curse power loss, aperture size, intensification.
 Conclusions. An synthesis can be found when step equal least distance between adjacent directions. At start, set If enough, corrected.
 Keywords: phased array; pattern; direction; cancellation; size.