Array

pattern nulling by element position perturbations using a genetic algorithm A. Te-nant, M.M. Dawoud and A.P. Anderson htdesing term: Antenna arrays. Antenna phased arrays. Genetic algorithms. t geneti- algorithm has been used for null steering in phased and:,daptive arrays. It has been shown that it is possible to steer the tray nul l s precisely to the required interference directions and to chieve ny prescribed null depths. A comparison with the results brained from the analytic anlution shows the advatages of using he genetic algorithm for null steering in linear array patterns. fntroduc ion: Nu:. steering in adaptive arrays can be achieved by element,position perturbations [1-3]. This technique is based on the assn; sption. of. relatively smell element position perturbations so that r a analytic solution can be formulated. Results were given for displ tcemects of the elements both along, and normal to, the axis of Cu array. In this Letter, we report the use of a genetic algorithm (4) in the realisation of adaptive nulling by element posi-tion perturbations. The use of F. genetic algorithm removes the restrictions imposed on the array element displacements in order to obtain the linear analytic solution. The results presented show that it is possible to steer the array nulls precisely to the required interference dire Lions and to achieve prescribed null depths. direction of G