An accurate numerical method for estimating the delay between two omni-directional receiving elements

In evaluating the performance (see Fig 10) we have chosen D/λ = 0.2. An error Eθ = (θ−θ) is computed over wide SNR and sampling rates. The value σθ is depicted in Fig 10. A superior performance of the DF system is achieved due to the choice of the best segment pair and also due to the excellent well behaved DE algorithm. An accuracy (σθ) of 1° or better for SNR less than 4 dB, It is worth noting that this DF system exhibits an error less than 2.5° at 0 dB SNR conditions and around 3° at −2dB. Impact of sampling rate is not significant below OdB and N ≥ 4.