Adaptive antenna array beamforming with wide pattern nulling

The problem of the weight distribution of an antenna array (AA) providing for forming wide gaps (nulling) in the directional patterns is actual in connection with spatial-time signal processing and adaptive AA technique. Using wide gaps permits to lower AA characteristics sensitivity to uneven variations of frequencies and angular coordinates of suppressed interference signals. In the paper is considered the method for wide gap forming in the directional patterns which may be used in conditions of posterior uncertainty (in adaptive AA). In the case the interference suppression is realized on the base of using time samplings of array input signals. It is shown that synthesis of the weight distribution providing wide gaps in the directional pattern in directions on interference sources may be carried out when external interference power increases substantially internal noise power.