Quick Facts
| Positioning Technology |
Long Baseline (LBL) with umbilical communication |
| Applications |
Precision ROV, AUV or submersible based seafloor surveys |
| Components |
Baseline Stations, ROV Stations, DiveBase(tm) software |
| Deployment |
Typical 10 - 60 minutes for baseline station deployment |
| Recovery |
Remotely through acoustic release mechanism |
| Accuracy |
Generally better than 1 m. Down to 0.15 m with well-controlled setup |
| Depth Rating |
1000 m and 6000 m standards |
| Battery Life |
20 / 160 hours with RBS-1 / RBS-2 baseline stations. Zero power sleep mode. |
| Maximum Range |
500 / 1000 / 4000 m nominal with standard / high power / low frequency versions |
| Advanced Features |
Multi-ROV operations, chart overlay, GPS integration, observation recording |
| More Information |
AquaMap(tm) Operator's Manual, Technical Reference Manuals |
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| AquaMap ROV is the choice for precision underwater survey work, by ROV, AUV or submersible. The system’s field record ranges from a wreck survey over 5000 meter deep,to ship hull surveys, AUV navigation and the installation of wave recorders in shallow waters. The reliable long baseline technology produces high quality positions in just about any environment. Accuracy is generally below 1 meter, and can reach 0.15 meter in a well controlled setup. A number of advanced features are available. These include multi-vehicle operations, message exchange and remote control functions, and raster chart or AutoCAD drawing overlays on the display screen. All positioning data is recorded, and can be exported to GIS, data bases or spreadsheets. Data export is also available in real-time through either RS-232 or DDE, supporting integration of AquaMap ROV with third party navigation software.
AquaMap ROV delivers baseline relative positions. However, using an optional surface station and DGPS receiver, the absolute positio of the baseline network can be surveyed and operations can proceed in a latitude / longitude framework.
A typical AquaMap ROV system consists of a network of three or four baseline stations. A transponder is mounted on the vehicle. In ROV applications, the transponder communicates with the surface through the umbilical using either a twisted wire pair (RS-485) or RS-232. In AUV or submersible applications, the communication link leads to the inside of the vehicle. In ROV and submersible operations, the system is controlled and data is displayed by the DiveBase software running on a PC. In AUV applications, the vehicle transponder communicates with the host computer through a RS-232 link.
For easy retrieval, an acoustic release mechanism is available for the baseline transponders. After issuing a secured command from DiveBase, the transponder releases an anchor weight and floats to the surface. A choice of bare transponder electronics modules and housed transponders up to a 6000 m depth rating are available for the vehicle. Transponder modules are normally preferred to maintain the streamlined profile of an AUV. Housed transponders simplify the installation on ROV and submersibles.
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