Sidelobe Levels for Arrays which have Tapered Excitations with Random Errors,
CONTROL DATA CORP MELVILLE N Y TRG DIV
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The probabilities that the sidelobes will exceed some specified level are compared for arrays with uniform and tapered excitations when random errors are present in the amplitudes and phases of the array element excitations. While in the absence of errors the tapered excitation will usually yield lower sidelobes than the uniform excitation, with random errors present the situation can be reversed, i.e., due to the errors it may be more probable that the tapered array sidelobes will exceed some level than that the uniform array sidelobes will do so. Numerical results are presented for a triangular excitation distribution. A new expression for the probability that a sidelobe will exceed a specified level is also obtained.