Terrestrial LiDAR

For the highest data density needs, lasers are the solution.

SAM utilizes terrestrial laser scanning tools to perform High Definition Surveying, also known as HDS. We use multiple Trimble and Leica HDS scanning systems, each with different strengths that can be utilized depending on project capabilities. These are the most advanced terrestrial laser scanning scanning systems on the market, allowing us to unobtrusively deliver data of high quality and accurate detail in a significantly shorter project cycle. Our Leica system is a time-of-flight based laser scanning system, offering a longer range when positioning or access to the project may be more limited. We also have Leica systems that use ultra-high-speed scanning, offering faster, denser data collection at closer ranges. Each of these scanners can deliver highly-accurate data for different defined project parameters. We provide experienced data acquisition, project control, filtered data and complete schematic drawings and 3-D models for a variety of high-definition surveying applications, including civil, mechanical, electrical, architectural, and archaeological. We offer fully-registered and controlled laser scan data along with high-resolution digital imagery calibrated to the scan cloud. HDS and 3D Scanning are an integral part of our services for Building Information Modeling.

SAM's 3-D laser scanning services provide the following benefits:

  • Reliable data.  All work is performed under the direction of a Registered Professional Land Surveyor with established quality assurance/quality control processes
  • Increased efficiency.  Scanning integrated into survey workflow; ability to capture scan point information for later data mining
  • Seamless data integration.  All final products delivered in the required formats
  • Safety.  For survey field crews and motorists

The technology can provide sub-centimeter level accuracy by capturing data using HDS. Once captured, the laser scanned data points that comprise planar surfaces can be modeled and intersected to create vertices with a much higher level of accuracy and precision than if located by any other available means.

Terrestrial LiDAR can also be used to producing Digital Terrain Models (DTM) with a georeferenced point cloud dataset. Using this dataset, features can be developed and imported into a Microstation DTM file from which a triangulated irregular network (TIN) is produced with sub-centimeter level accuracy.

SAM is an experienced provider of terrestrial LiDAR services. The firm was awarded the Gold Medal in Surveying / Mapping Technology at the 2006 Texas CEC Engineering Excellence Awards (EEA), for the HDS Laser Scanning, Land Surveying, Aerial Mapping and SUE services performed in San Antonio, Texas.

"We adopted terrestrial scanning services from early-on in its commercial viability and have become expert practitioners in its use. Our considerable experience with its complexities provides a real advantage for our clients."