Mobile LiDAR

Imagine the benefits of high-resolution data. Now, imagine it collected at highway speeds.

Mobile Lidar for Urban Streetscapes

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April 2012 article from GIM International magazine

Mobile LiDAR is an innovative mapping solution that incorporates the most advanced LiDAR sensors, cameras and position/navigation to collect survey-quality point data quickly and accurately. SAM has used LiDAR technology since 1998, and was an early adopter of the Lynx™ Mobile Mapping system. We currently have two complete Lynx systems and can deploy mobile mapping efficiently over a wide geographic range.

Mobile LiDAR offers numerous advantages over aerial mapping and conventional ground surveys. This non-invasive method of surveying can be operated day or night, with efficient acquisition of millions of 3-D design points per minute. Mobile laser scanning provides data density of up to 150 points per square foot (dependent on system settings for the project), allowing for faster coordinate acquisition compared with all other survey methods.

Benefits of mobile LiDAR scanning include:

Cost savings: Advanced mobile mapping technology gathers all required data point measurements in one pass, eliminating the need for additional mobilization costs.

Time savings: Mobile LiDAR gives SAM the ability to collect up to 1,000,000 points per second, compared to one point every few minutes with traditional survey technologies.

Enhanced data: The system provides designers with a more "complete" picture of the project with survey accurate point measurements and the ability to locate features that may be inaccessible with other methods.

Increased safety: The system also provides increased safety for project personnel and the general public because data can be collected remotely, day or night, removing the need for traffic diversion required by traditional surveying activities.

Accuracies of SAM's mobile mapping system:

  • Relative accuracy of points within the scanned data 0.0230 feet
  • Absolute accuracy of the scanned data anchored to GPS survey control established for the project: Horizontal & Vertical Positioning up to 0.04 to 0.06 feet

Applications for Mobile Laser Scanning:

  • Positive Train Control (PTC) Mapping
  • Corridor project work, including roadway and rail transportation, pipelines and electric transmission lines
  • Construction management for design-build
  • FAA airport design and layout plans
  • Harbor and shoreline mapping
  • Streetscape design
  • 3-D Asset inventory mapping
  • Digital Terrain Models (DTM)

Specifications of SAM's LYNX Mobile Mapper Systems (2):

Number of LiDAR sensors: 2
Camera support:Two 5-Mega pixel
Maximum range: 200m, 20%
Range precision: ± 8mm, 1σ
Laser measure: 200 kHz programmable
Measurements per laser pulse: Up to 4 simultaneous
Scan frequency: 80 to 200 Hz programmable
Scanner field of view: 360° without obstructions
Power requirements: 12 VDC, 30 A max. draw
Operating temperature: -20° to +40°C (extended range available)
Storage temperature: -40° to +80° C
Laser classification: IEC/CDRH Class 1 eye-safe

"This mobile LiDAR solution complements our integrated approach to data collection and will enable SAM to continue to build upon our reputation as a knowledgeable and customer-focused consultant. We are pleased to now offer the mobile LiDAR solution to our clients across the U.S., providing them with the best surveying and mapping technologies and services in the market."

Sam Hanna, CEO and President, SAM