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Getting Their Feet Wet
A joint Applanix / Fugro solution for improved subsea positioning.
Technologies that allow ROVs (Remotely Operated Vehicles) and AUVs (Autonomous Underwater Vehicles) to efficiently carry out precision surveys, and subsea maintenance tasks, are becoming significantly more important. More...
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For detailed information on POS MV's tightly-coupled inertial
advantages, please contact marine@applanix.com
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A Kalman filter is a very powerful set of mathematical equations that support estimations of past, present and future states, which can be applied to autonomous and assisted navigation.
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POS MV, POS MV Elite (for all marine vessels) and the POS MV WaveMaster (for smaller survey launches) are all tightly-coupled systems using Applanix' unique approach
to Inertially-Aided Real-Time Kinematic (IARTK) technology.
The user-friendly, turnkey systems provide accurate attitude,
heading, heave, position, and velocity data, representing
the latest in state-of-the-art inertial/GPS technology. The
systems maintain positioning accuracy under the most demanding
conditions, regardless of vessel dynamics. With its high data
update rate, POS MV, POS MV Elite and POS MV WaveMaster deliver a full six degrees-of-freedom
position and orientation solution.
POS MV and POS MV WaveMaster are designed for use with multibeam sonar systems, enabling
adherence to IHO (International Hydrographic Survey) standards
on sonar swath widths of greater than ± 75 degrees
under all dynamic conditions. The POS MV Elite offers true heading accuracy without the need for dual GPS
installation. POS MV Elite offers users the highest degree of accuracy in motion measurement for their marine applications.
For more information about POS MV, contact marine@applanix.com
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Hydrographic Surveying
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Benefits
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- Exceptional performance under all dynamic conditions
- Provides almost instantaneous reacquisition of RTK following
GPS signal loss
- Very low noise L1 and L2 carrier phase measurements
- Maintains heading accuracy in a high multipath environment
and in areas of poor GPS availability
- Automatic initialization upon power-up, following a one-time
calibration
- Superior low-elevation tracking performance regardless
of latitude
- Continuous sensor monitoring to ensure optimum performance
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Technology
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Applanix' POS™ technology was originally developed and
rigorously tested as part of an extensive military project.
This proven technology was enhanced, customised and packaged
to yield an off-the-shelf commercial product, uniquely suited
to the requirements of precision marine motion sensing, hydrographic
surveying and charting.
Current users include many of the world's largest marine
contractors and navies, which rely on POS MV's accuracy and
robustness for their precise marine survey requirements.
TrueHeave Software
Using new heave processing algorithms TrueHeave now enables
heave data to meet and exceed the highest marine industry
standards.
POS MV systems equipped with TrueHeave technology have sufficient
computational speed to generate a secondary estimate of heave
shortly after the initial sonar acquisition event. Delayed
time heave output not only removes many of the compromises
that must be made in real-time, but also provides near real-time
QC of heave performance.
Cost effective solution
TrueHeave significantly reduces filter settling time when
compared to traditional heave filters, which can almost completely
eliminate the need for line run-ins. This means a saving of
several minutes per survey line, which can translate into
a saving of hours or even days worth of labor and vessel costs.
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Components
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- PCS: A rugged, compact POS Computer System
- IMU: Survey-grade Inertial Measurement Unit
- GPS Antennas: Trimble Zephyr™ geodetic technology
- TrueHeave Software: Significantly improved heave estimate
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