Figure 1.
Schematic of encircling prey
Figure 2.
Spiral bubble-net attack of prey
Figure 3.
Schematic of searching prey (global exploration)
Figure 4.
The distribution of logistic mapping with different values of μ
Figure 5.
The distribution of logistic mapping when μ = 3.99
Figure 6.
The relationship between the inertia weight and the no. of iterations
Figure 7.
Schematic of two-masks function
Figure 8.
Comparison of low sidelobe radiation pattern obtained by Chebyshev synthesis and WOA
Figure 9.
Comparison of distribution of excitation amplitudes obtained by Chebyshev synthesis and WOA
TABLE I.
Comparison of optimization results between Chebyshev distribution and WOA
| amplitude | amplitude | ||||
|---|---|---|---|---|---|
| Element number | Chebyshev | WOA | Element number | Chebyshev | WOA |
| 1 | 0.2271 | 0.2307 | 16 | 1 | 1 |
| 2 | 0.238 | 0.2119 | 17 | 0.9965 | 0.9823 |
| 3 | 0.2241 | 0.2605 | 18 | 0.9561 | 0.9644 |
| 4 | 0.353 | 0.2993 | 19 | 0.9158 | 0.8965 |
| 5 | 0.4001 | 0.3938 | 20 | 0.8849 | 0.8608 |
| 6 | 0.4593 | 0.4684 | 21 | 0.7747 | 0.7952 |
| 7 | 0.536 | 0.5472 | 22 | 0.7251 | 0.7009 |
| 8 | 0.6153 | 0.637 | 23 | 0.6153 | 0.637 |
| 9 | 0.7251 | 0.7009 | 24 | 0.536 | 0.5472 |
| 10 | 0.7747 | 0.7952 | 25 | 0.4593 | 0.4684 |
| 11 | 0.8849 | 0.8608 | 26 | 0.4001 | 0.3938 |
| 12 | 0.9158 | 0.8965 | 27 | 0.353 | 0.2993 |
| 13 | 0.9561 | 0.9644 | 28 | 0.2241 | 0.2605 |
| 14 | 0.9965 | 0.9823 | 29 | 0.238 | 0.2119 |
| 15 | 1 | 1 | 30 | 0.2271 | 0.2307 |