The estimated probability of the four algorithms versus SNR. The estimated probability is defined by the formula, where count is the number of successful estimation. If the DOAs are successfully estimated in one simulation, count = count + 1. The settings are: θ
1 = 10°, θ
2 = 30°, N = 10 sensors, T = 1,200 time snapshots. The number of Monte-Carlo simulations is Mon = 500.