Investigation on the Inversion of the Atmospheric Duct Using the Artificial Bee Colony Algorithm Based on Opposition-Based Learning

Figure 7

The comparison of the difference between the inverted and actual coverage diagram with different noise level: (a) 0 dB; (b) 1 dB; (c) 2 dB; and (d) 3 dB.

(a)

(b)

(c)

(d)