Friday, July 22, 2011

Mobile LiDAR: Positioning Systems

In my most recent article for LiDAR News, I provide an overview of Positioning Systems for Mobile LiDAR.  It is a little more in depth than a blog posting I prepared back in 2009 titled Measuring Systems Part 1 - Positioning.

Mobile LiDAR is a system comprised of various components that are connected to provide a solution.

My belief is that the Position and Orientation System (POS) used to develop the Smoothed Best Estimate of Trajectory (SBET) is the distinguishing factor between available Mobile LiDAR systems. The ability to accurately position the vehicle has downstream advantages for the initial LiDAR processing and subsequent control adjustment.


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What is Mobile LiDAR?

Mobile LiDAR (Light Detection and Ranging) systems are comprised of vehicle-mounted lasers, cameras and GPS/INS navigation systems to capture highly-detailed and accurate three-dimensional (3D) topographic information for surveying and engineering applications. Michael Baker International became an early adopter of Mobile LiDAR technology by acquiring our first system in 2009, with further expansions in 2014 and 2015 that increased our fleet to four (4) Optech Lynx SG1 Mobile LiDAR systems. Over that period our systems have completed more than 300 projects throughout 29 different U.S. States (and multiple countries), and encompassing hundreds of thousands of miles. Our project portfolio includes applications in roadway design, 3D modeling, railroad corridors, signaled intersections, utility infrastructure, asset management, pavement condition assessment and airport infrastructure.