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 5

SNR (dB) values when arrays can produce 50% correct results using 1025 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	−4.98/−6.72/−6.99/−5.18/−6.73/−4.78	−7.46/−9.18/−9.59/−7.45/−8.97/−7.27	−10.06/−11.73/−11.79/−10.25/−11.54/−9.98	−11.87/−12.86/−12.56/−11.75/−12.96/−11.66
WF-2	−4.83/−6.72/−6.85/−5.05/−6.49/−4.71	−7.20/−9.01/−9.11/−7.39/−8.91/−7.07	−9.88/−11.40/−11.50/−9.99/−11.48/−9.98	−11.35/−12.57/−12.60/−11.46/−12.75/−11.36
WF-3	−4.88/−6.66/−6.91/−5.21/−6.48/−4.92	−7.50/−9.11/−9.43/−7.43/−9.17/−7.22	−10.02/−11.51/−11.81/−10.10/−11.58/−10.08	−11.84/−12.72/−12.73/−11.73/−13.03/−11.69
WF-4	−0.63/−0.63/−0.97/0.71/−0.54/1.25	−3.57/−3.57/−3.58/−2.01/−3.27/−1.77	−5.92/−5.92/−6.06/−4.66/−6.34/−4.48	−7.50/−7.50/−7.48/−6.50/−7.51/−6.31