Table 2.

Variance of target angle in typical time intervals.

CPI Index (Typical Time Intervals)	1–6000	7000–9000	10000–13,000
Variance of $A_{\mathrm{target}}$ calculated without u-target detection	0.30 × 10−3	1 × 10−3	0.35 × 10−3
Variance of $A_{\mathrm{target}}$ calculated with Blair GLRT	0.12 × 10−3	0.23 × 10−3	0.09 × 10−3
Variance of $A_{\mathrm{target}}$ calculated with GBD	0.17 × 10−3	0.07 × 10−3	0.22 × 10−3