GeoAcoustics – GeoMB 401
GeoMB is a compact multibeam echosounder with integrated auxiliary sensors, delivering dependable, high-resolution bathymetric data.
Operating at 400 kHz, it provides wide swath coverage and excellent vertical resolution, supporting surveys with demanding accuracy requirements.
GeoMB includes integrated Applanix navigation and an SVP, with serial support for third-party GNSS/MRU and SVP. Navigation data can also be output to external software.
Optimised for small survey vessels, vessels of opportunity and USVs, the system combines low power consumption with robust mechanical design. Integrated beamforming, real-time motion and sound velocity compensation, and seamless interfacing with standard navigation systems ensure reliable performance in dynamic offshore environments.
| Technical Specifications | |
| Working Frequency | 400 kHz |
| Number of Beams | 512 |
| Cross Track Beam Width | 1° |
| Along Track Beam Width | 2° |
| Swath Coverage | > 140° |
| Sounding Depth | 0.2–200 m+ |
| Depth Range | 0.75 cm |
| Max Ping Rate | 60 Hz |
| Sounding Mode | Equiangular / Equidistant |
| Signal Type | CW / Chirp |
| Pulse Width | 30 µs – 8 ms |
| Physical Specifications | |
| Transducer Size | 210 x 210 x 150 mm |
| Transducer Weight | 7.5 kg |
| Deck Unit Size | 230 x 152.4 x 92.32 |
| Deck Unit Weight | 3 kg |
| Working Temperature | -2 °C-40 °C |
| Storage Temperature | -20 °C-55 °C |
| Power Supply | DC 10-32 V / AC 110-240 V |
| Power Consumption | 60 W |
| Integrated Auxiliary Sensors | |
| Positioning | 0.2 – 2 m (DGPS) / 10 cm (PPP) / 8 mm + 1ppm (RTK) |
| Attitude | 0.03° (RTK) / 0.025° (Post Processing) |
| Heading | 0.06° (4 m Baseline) / 0.08° (2 m Baseline) |
| Heave | 5 cm or 5% Range / 2 cm or 2% (TrueHeave) |
| Software |
| Compatible with Hypack, Qinsy, and BeamWorX |