Nonuniformly Spaced Array with the Direct Data Domain Method for 2D Angle-of-Arrival Measurement in Electronic Support Measures Application from 6 to 18 GHz

Table 2

SNR (dB) values when arrays can produce 50% correct results using 129 snapshots under different estimation accuracies.

	RMSE ≤ 1° (Array-1, 2, 3, 4, 5, 6)	RMSE ≤ 2° (Array-1, 2, 3, 4, 5, 6)	RMSE ≤ 5° (Array-1, 2, 3, 4, 5, 6)	RMSE ≤ 10° (Array-1, 2, 3, 4, 5, 6)
WF-1	0.58/−0.94/−1.00/−0.42/−0.79/0.87	−2.30/−3.85/−4.04/−2.34/−3.50/−2.02	−5.12/−6.56/−6.74/−5.27/−6.50/−5.04	−6.90/−7.92/−7.79/−7.03/−8.03/−6.94
WF-2	0.71/−0.89/−0.95/0.28/−0.84/0.95	−2.16/−3.83/−3.91/−2.21/−3.65/−1.81	−5.04/−6.43/−6.62 /−5.01/−6.58/−4.98	−6.89/−8.02/−7.87/−6.87/−8.10/−6.71
WF-3	0.63/−0.90/−1.00/0.57/−0.70/0.92	−2.19/−3.74/−3.82/−2.24/−3.63/−1.96	−5.05/−6.75/−6.67/−5.18/−6.40/−4.88	−6.97/−7.81/−7.85/−6.86/−7.99/−6.80
WF-4	0.81/−0.75/−0.81/0.48/−0.65/0.87	−2.11/−3.78/−3.85/−2.34/−3.61/−1.88	−5.06/−6.69/−6.66/−5.07/−6.70/−4.92	−6.91/−7.87/−7.68/−6.96/−7.98/−6.71