Skip to content
Case Study

VRT uses POSPac to improve underwater inspection surveys

2 Minutes Read

Share this post:

Summary

Harsh environments pose issues for underwater mapping. Discover how Trimble Applanix® products provide key position and orientation solutions to facilitate underwater inspections.

Underwater mapping despite low visibility in Finnish lakes

  • Applanix POS MV blends GNSS data with angular rate and acceleration data from an IMU and heading from GAMS to produce a robust and accurate solution 

  • Applanix POSPac Mobile Mapping Suite is industry-leading software for Direct Georeferencing of mobile mapping sensors using GNSS and inertial technology

Overview 

Faced with the regular challenge of harsh GNSS environments, VRT needed a solution that could provide robust positioning and orientation to aid in their underwater inspections.

Solution

VRT partnered with Applanix to design the perfect solution. VRT has two survey vessels that use Applanix POS MV to produce position and orientation solutions.

In addition, VRT uses POSPac post-processing software to ensure the best quality data is achieved. Specifically, the IN-Fusion SmartBase and IN-Fusion SingleBase processing methods are used to improve the position and orientation solution, allowing noise point filtering and manual cleaning to become easier and more efficient.

If the survey area is accessible by the survey's vessels, VRT has 100 percent confidence that POSPac provides the high-quality data needed for inspection.

Even in extreme GNSS environments, like in urban canyons or beneath the bridge where GNSS data is completely lost for some time, POSPac has always made it possible to save the data.

“The improved data quality helps inspectors to make better observations and to be more confident about the information,” says Ville Mäkeläinen, Chief Business Development Officer at VRT.

Related Case Studies

SEP Hydrographic Limited uses Trimble Applanix technology for asset inspection
customer story

SEP Hydrographic Limited uses Trimble Applanix technology for asset inspection

SEP Hydrographic Limited employs Trimble® Applanix® POS MV OceanMaster and POSPac MMS for robust pos...
Read full article
Ultrabeam uses Trimble Applanix to "map the gap!"
customer story

Ultrabeam uses Trimble Applanix to "map the gap!"

In the UK, Ultrabeam Hydrographic's autonomous amphibious vehicles use Trimble® Applanix® POS MV and...
Read full article
Mobilizing a POS MV OceanMaster for hydrographic survey inside A-2-Sea's Noortruck
customer story

Mobilizing a POS MV OceanMaster for hydrographic survey inside A-2-Sea's Noortruck

Explore how the Applanix® POS MV OceanMaster will allow A-2-Sea to fulfill offshore survey requireme...
Read full article