Diffraction Loss Prediction of Multiple Edges Using Bullington Method with Neural Network in Mountainous Areas

Table 1

Comparison of prediction performance.

Area	Method	Average error (dB)	Standard deviation of errors (dB)
Westside of Maebong mountain	Bullington	8.50	6.32
	Deygout	4.92	5.27
	Causebrook	3.53	5.19
	Giovanelli	4.86	5.25
	Proposed	2.75	4.66
Ongma mountain	Bullington	4.12	7.49
	Deygout	6.51	7.41
	Causebrook	7.17	7.51
	Giovanelli	6.45	7.42
	Proposed	0.92	5.30