Figure 5: Two sonar swaths over-lapping with DOLPHIN pro-cessing ? ll the typical nadir gapFigure 6: A DOLPHIN Sonar trial result, SAS at three times Nyquist speed.Image: QinetiQ North America Image: QinetiQ North AmericaMay 201924 MTRMTR #4 (18-33).indd 24 4/25/2019 9:33:17 AM