TY - JOUR AU - Desrochers, D. AU - Marsden, R.F. PY - 1999/09/01 Y2 - 2024/03/29 TI - High resolution beamforming applied to a DIFAR sonobuoy JF - Canadian Acoustics JA - Canadian Acoustics VL - 27 IS - 3 SE - Proceedings of the Acoustics Week in Canada DO - UR - https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1206 SP - 38-39 AB - High-resolution beamforming techniques have been successfully applied to DIFAR data to provided accurate directional information. Although the current processing techniques are adequate for most situations, the presence of multiple contacts, or strong directional noise, may hinder target detection, and localization. Simulations and experimental results from field data showed that E<sub>ML</sub> provided the best overall results in terms of accuracy, peak-to-trough visibility and processing time, for a range of parameters. E<sub>IML</sub> improved the peak-to-trough difference at the expense of processing time, but in most cases, the weaker contact was already visible with E<sub>ML</sub>, making the gain minimal. It was also found that E<sub>EV</sub> may produce spurious peaks, or create double peaks, in isolated cases. E<sub>EV</sub> is otherwise accurate, with E<sub>IEV</sub> providing marginal improvement. ER -