The Imenco Nautronix NASNet® subsea positioning system is an advanced multi-user, versatile long baseline (LBL) positioning system that can simultaneously position unlimited objects with fast updates and no acoustic interference.
The versatile feature of the system means it is ideal for meeting deepwater, construction and general hydrographic survey operations.
Highly accurate over long ranges meaning less seabed assets to install and no need for frequency management. NASNet® provides field-proven operational efficiencies, designed for long term deployment in deepwater environments.
More details
Likened to an underwater GPS system, NASNet® is the ideal subsea positioning and navigational solution. As a broadcast only system, its reliable positioning provides reduced vessel times for high-quality data updates throughout the water column to the sea floor, regardless of working depths.
Unlimited users
- The only true multi-user subsea positioning system on the market, absolutely no restrictions in the numbers of users
- Broadcast LBL means no frequency management required, similar to GPS but underwater
Fast update rate
- Broadcast LBL provides fast update rates, legacy systems typically require two way range measurement which can add latency to position updates
Long range coverage, reduced number of seabed stations required
- Increased elevation of broadcast results in increased signal coverage seabed-to-seabed, allowing number of installed seabed stations to be reduced. This is a significant time and cost saving for installation and servicing of the position array
- ADS² operates at lower frequency of 10Khz for reliable long range signal coverage
Project flexibility
- Up to 4year battery life with the large stations. Culmination of these advantages allows for project scope changes/delays to be easily accommodated
- Due to how the station placements tend to result means that full seabed coverage is common with the larger stations, this isn’t normally a requirement but it allows customers to install pipe and umbilical normally done on USBL they can do this with LBL at greater accuracy
- Placement of larger stations usually provides full seabed signal coverage, this isn’t normally a requirement but it allows customers to install pipe and umbilical using LBL positioning at greater accuracy compared with USBL
- Unlimited number of users can make use of position monitoring for subsea assets, example TDM for a pipeline from a single beacon received and monitored at numerous ROV’s or vessels in area
- Reduce the chances of GPS losses due to either signal degradation from either scintillation or from malicious cyber-attacks, NASNet® positioning is as fast and accurate as that of GPS
- INS ready out of the box, both close and loose coupled
Contact
Imenco Nautronix
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