Table 1.

The detection results using different methods.

Methods	Metal Ball $\mathit{d}=2 \mathbf{cm},\mathit{R}=10 \mathbf{m}$		Golf Ball $\mathit{d}=4.3 \mathbf{cm},\mathit{R}=10 \mathbf{m}$		Metal Ball $\mathit{d}=2 \mathbf{cm},\mathit{R}=42 \mathbf{m}$		Golf Ball $\mathit{d}=4.3 \mathbf{cm},\mathit{R}=42 \mathbf{m}$
	${\mathit{P}}_{\mathit{d}}\left(\mathit{\%}\right)$	${\mathit{P}}_{\mathit{f}}\left(\mathit{\%}\right)$	${\mathit{P}}_{\mathit{d}}\left(\mathit{\%}\right)$	${\mathit{P}}_{\mathit{f}}\left(\mathit{\%}\right)$	${\mathit{P}}_{\mathit{d}}\left(\mathit{\%}\right)$	${\mathit{P}}_{\mathit{f}}\left(\mathit{\%}\right)$	${\mathit{P}}_{\mathit{d}}\left(\mathit{\%}\right)$	${\mathit{P}}_{\mathit{f}}\left(\mathit{\%}\right)$
CA-CFAR	46.67	3.2	100	1.35	13.33	4.67	100	1.11
CM-CFAR	53.14	7.41	100	4.58	21.57	7.68	100	3.14
PSO-SVDD	87.33	1.25	100	0.65	64.67	0.95	100	0.83
PSO-NSVDD	92.61	0.39	100	0.1	78.18	0.51	100	0.12