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 3

SNR (dB) values when arrays can produce 50% correct results using 257 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	−1.33/−2.95/−3.13/−1.58/−3.03/−1.18	−4.03/−5.72/−5.71/−4.01/−5.76/−3.88	−6.80/−8.13/−8.38/−6.86/−8.34/−6.83	−8.75/−9.56/−9.50/−8.06/−9.58/−8.48
WF-2	−1.26/−2.90/−3.19/−1.39/−2.67/−1.16	−3.94/−5.55/−5.76/−4.12/−5.61/−3.93	−6.85/−8.14/−8.27/−6.92/−8.55/−6.59	−8.43/−9.50/−9.60/−8.62/−9.69/−8.67
WF-3	−1.28/−2.99/−3.23/−1.62/−2.88/−1.20	−4.15/−5.74/−5.86/−4.36/−5.55/−3.85	−6.86/−8.39/−8.22/−6.94/−8.53/−6.70	−8.54/−9.56/−9.57/−8.58/−9.81/−8.60
WF-4	−1.12/−2.53/−2.85/−1.31/−2.62/−0.95	−3.38/−5.25/−5.59/−3.94/−5.07/−3.63	−6.41/−7.98/−7.87/−6.38/−8.28/−6.43	−8.32/−9.36/−9.51/−8.26/−9.35/−8.20