Direction Finding with Gain/Phase Errors and Mutual Coupling Errors in the Presence of Auxiliary Sensors

Table 2

Mean and variance of the real and imaginary part of all mutual coupling coefficients at different SNRs. True values are 𝑅₁=0.4499, 𝑅₂=0.2598, 𝐼₁=0.5362, and 𝐼₂=−0.1500.

SNR	−5 dB		5 dB		15 dB		20 dB
𝑣	1	2	1	2	1	2	1	2
𝑅𝑣	0.1387	0.2266	0.4189	0.2599	0.4459	0.2603	0.4497	0.2598
𝜎𝑅𝑣	7.4330𝑒−3	2.7175𝑒−3	2.2405𝑒−3	4.7373𝑒−4	5.8136𝑒−4	5.4347𝑒−5	1.6664𝑒−5	3.8597𝑒−6
𝐼𝑣̂	0.3669	−0.1058	0.5185	−0.1432	0.5344	−0.1492	0.5359	−0.1500
𝜎̂𝐼𝑣	8.6657𝑒−3	1.2841𝑒−3	1.1336𝑒−3	1.3086𝑒−4	7.3215𝑒−5	1.6873𝑒−5	1.0036𝑒−5	1.8215𝑒−6