Geo Acoustics – GeoPulse Compact OTS
The GeoPulse Compact OTS is an advanced highperformance sub-bottom profiler designed for rapid deployment and ease of use. Lightweight and robust with low power consumption, the system contains a newly designed transducer and hydrophone which is combined with state-of-the-art, adjacent transmit and receive electronics to outperform any other system in the same size and weight class. The GeoPulse Compact OTS is designed for use in shallow water and can work at depths less than 1 metre by receiving on the hydrophone while the transducer is active. The system is shipped with the latest version of Chesapeake SonarWiz© software, for control, visualisation and data processing.
| KEY FEATURES | |
| Lightweight and rugged design | |
| Wide frequency range | |
| Output power up to 1 kW | |
| Low power: 10 - 30 VDC (30 W) | |
| Operates down to 100 m+ | |
| Penetration up to 80 m | |
| Resolution as small as 6 cm |
| APPLICATIONS | |
| Pipeline detection | |
| Geological surveys | |
| Dredging surveys | |
| Environmental surveys | |
| Buried object detection |
| TECHNICAL SPECIFICATIONS | |
| INTERFACE BOX (MODEL GP01) | |
| MECHANICAL | |
| Material | Anodised aluminium case |
| Dimensions | 268 mm (D) x 350 mm (W) x 103 mm (H) (excluding connectors) |
| Weight | 7 kg |
| ENVIRONMENT | |
| Humidity | 10 %-95 % RH, non-condensing |
| Temperature | 0 °C-40 °C (operation), -20 °C-75 °C (storage) |
| Protection | IP66 rated (including mating connectors), IP66 rated connector covers supplied |
| CONNECTORS | |
| Connections | Power in, deck cable (up to 50m), 3 x Serial |
| Inputs | PPS input, external trigger input |
| INDICATORS | |
| Status | Power in, HV, Time sync, Sonar link |
| POWER INPUT | |
| Voltage | 10 VDC-34 VDC (24 VDC nominal recommended) |
| Protection | Reverse polarity and overvoltage protected |
| Power Consumption | 30 W typical plus transmitter power |
| Transmitter Usage | 1 W-35 W |
| AC INPUT | |
| Input | 90 VAC-305 VAC, 47-63 Hz |
| Output | 24 VDC nominal, 120 W capable |
| Protection | Short circuit & over-current protected. IP65 rated |
| SERIAL | |
| Ports | 3 x RS232 with overvoltage protection |
| Configuration | Range of baud rates selectable |
| PPS | |
| Signal | TTL level, protected, edge selectable |
| ACQUISITION SOFTWARE | |
| Type | SonarWiz fully featured SBP with control interface (locked for use with GeoPulse Compact) |
| Features | Control of all system parameters | Full range of processing tools | Data export in industry standard formats | 1 year of maintenance included |
| OVER THE SIDE BUBBLE (MODEL GP06) | |
| MECHANICAL | |
| Construction | Anodised aluminium/acetal construction, fibreglass shell covers. |
| Dimensions | 900 mm (L) x 300 mm (W) x 280 mm (H) (exc. connectors) |
| Weight | 24 kg |
| TRANSMIT (TX) | |
| Output Power | 1 kW peak (adjustable as % of full scale) |
| Rep Rate | Up to 20 PPS (waveform dependent) |
| TX – WAVEFORMS | |
| Pinger | Frequency and cycles select: 1-32 cycles (in 1 cycle steps). 4-15 kHz (in 0.1 kHz steps) |
| Ricker | Spread spectrum (select by highest frequency component). 4-15 kHz (in 0.1 kHz steps) |
| Chirp | Sweeps with 5/10/15 kHz bandwidth, 8/16/32 ms length, frequencies 1.5-18 kHz |
| RECEIVE (RX) | |
| Acquisition | Dual channel, 800 kHz front end sampling, 50/100 kHz sample output, 24 bit |
| ACOUSTIC | |
| Source Level | Up to 196 dB ± 3 dB re 1 μPa @ 1 m |
| BEAM WIDTH | |
| Along Track (Hydrophone Rx) | 35° at 5 kHz, 18° at 10 kHz, 12° at 15 kHz (two way) |
| Along Track (Transducer Rx) | 45° at 5 kHz, 25° at 10 kHz, 35° at 15 kHz |
| RESOLUTION / PENETRATION | |
| Resolution | 6 cm (using 15 kHz “Chirp” sweep) |
| Penetration | Up to 80 m (fine clay), up to 20 m (sand) |