Table 1: Average-time comparison for computing the planar-array pattern with different methods.

Number of elementsElement-by-element superposition(s)2D FFT(s)
512 × 512
points
1024 × 1024
points
2048 × 2048
points
512 × 512
points
1024 × 1024
points
2048 × 2048
points

9 × 913.338848.4308194.43240.01690.07810.3501
27 × 27182.7668694.79602862.55290.01410.08310.3611