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 4

SNR (dB) values when arrays can produce 50% correct results using 513 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	−3.29/−5.00/−4.99/−3.36/−4.77/−3.07	−5.68/−7.59/−7.66/−5.82/−7.47/−5.69	−8.47/−9.91/−9.87/−8.40/−9.94/−8.38	−10.20/−11.33/−11.06/−10.11/−11.37/−10.29
WF-2	−3.30/−4.88/−5.15/−3.41/−4.84/−2.97	−5.60/−7.39/−7.68/−5.66/−7.33/−5.56	−8.37/−9.99/−10.10/−8.45/−9.04/−8.18	−10.24/−11.17/−11.06/−10.28/−11.20/−10.17
WF-3	−3.24/−5.01/−5.04/−3.32/−4.95/−2.83	−5.76/−7.60/−7.82/−5.93/−7.38/−5.64	−8.41/−9.88/−9.99/−8.55/−9.90/−8.53	−10.13/−11.12/−11.24/−10.06/−11.28/−9.94
WF-4	−2.06/−3.71/−3.72/−2.23/−3.63/−1.87	−4.54/−6.36/−6.52/−4.81/−6.19/−4.24	−7.16/−8.91/−8.92/−7.37/−8.70/−7.11	−8.92/−10.06/−10.03/−8.93/−10.18/−8.87