Optimum Synthesis of Pencil Beams with Constrained Dynamic Range Ratio

Table 1

Number of subproblems, N_sub, and design time, t_design, estimated for exhaustive search and obtained in proposed minimization of SLL and SLP for arrays with various numbers of elements, N, DRR constraints, D, and beamwidth of 12°. Number of points Q = 10 N and Q = 10 N + 1 are used in minimization of SLL and SLP.

N	D	Exhaustive search		SLL minimization		SLP minimization
		Nsub	tdesign	Nsub	tdesign	Nsub	tdesign
20	3	1.049e6	17.4 min	20	0.42 s	20	0.31 s
	2	1.049e6	17.4 min	20	0.42 s	20	0.39 s
	1	1.049e6	17.4 min	112	2.10 s	20	0.28 s
30	3	1.074e9	298 hours	60	2.17 s	30	0.70 s
	2	1.074e9	298 hours	142	5.10 s	30	0.71 s
	1	1.074e9	298 hours	1595	49.4 s	30	0.74 s
40	3	1.100e12	34.9 years	80	4.53 s	40	1.57 s
	2	1.100e12	34.9 years	80	4.58 s	40	1.60 s
	1	1.100e12	34.9 years	2104	95.4 s	40	1.24 s