Figure 5From: Enhanced "vector-cross-product" direction-finding using a constrained sparse triangular-arrayThe RMSE of the direction-cosines estimates versus inter-sensor spacing Δ/ λ. (a) for two incident sources; same setting as in Figure 3a at SNR = 30dB. λ = min{λ1, λ2}, Δ = Δ x = Δ y ; (b) for three incident sources; same setting as in Figure 3b at SNR = 30dB. λ = min{λ1, λ2, λ3}, Δ = Δ x = Δ y .Back to article page