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Lidar Mapping
Fugro’s airborne lidar mapping services provide a complete solution for fast and accurate elevation data to meet
the demands of a variety of customers. Lidar systems are mounted on fixed-wing aircraft for large-area topographic
mapping projects while our exclusive FLI-MAP helicopter-mounted system delivers dense, engineering-grade datasets
for corridor and confined area projects. Our lidar systems incorporate multiple-pulse, multiple-return lidar technology,
as well as fast pulse-rate frequencies for the most efficient and accurate lidar data collection possible.
The FLI-MAP
system also integrates imagery capabilities, including a line-scan camera that assigns RGB values to lidar points for
fast visualization and interpretation opportunities. Additionally, Fugro’s offshore services division provides unique
bathymetric lidar capabilities in support of near-shore and riverine hydrographic surveying and mapping operations.
Fugro’s in-house lidar data processing uses both commercial off-the-shelf and proprietary software for transforming
raw laser points into usable geospatial data.
Products and Services
- Digital elevation models. Lidar DEMs provide a fast and cost-effective method for producing surface models accurate for use in orthophoto rectification. Fugro offers both full-feature (all reflective-surfaces) and bare-earth DEMs with a nominal post spacing of 0.25 m to 4.5 m, as well as other derived products, such as hillshade, slope, and aspect.
- Contours. Supplemented with breaklines from aerial imagery, or using lidargrammetry for projects with no associated imagery, Fugro can provide contours at 30 cm to 3 m intervals.
- Land-use/land-cover. Lidar data may be used to generate preliminary land-cover classification depicting open, scrub/shrub, urban, and forested classifications at a nominal post spacing of 1 m to 4.5 m. This information is proven to be very useful for determining roughness/Manning "N-values" for the hydrologic and hydraulic modeling of limited study areas, in support of floodplain mapping.
- Intensity images. Similar in appearance to low-resolution black-and-white photographs, georeferenced lidar intensity images can be used to extract planimetric features, serve as ancillary input in the lidar data processing and to check the horizontal accuracy of the lidar data, as well as the "cleanliness" of the bare-earth surface data.
- FLI-MAP derived datasets. From the FLI-MAP data, Fugro extracts customized information on topography, assets, and infrastructure along highways, railways, power lines, and levees, among others. Other FLI-MAP data include:
- Line scan imagery. Offering a realistic visualization of the project area, FLI-MAP’s colorized lidar point data can be studied from various viewing angles. It can be used to create fly-throughs as well as true orthoimagery without the need for separate imagery. Colorized lidar data points can also be used to facilitate visualization and interpretation in supported CAD and visualization packages.
- Detailed feature mapping. The high point density (>30 points/m2) of FLI-MAP data makes it possible to compile ground features including power transmission lines, towers, rail tracks, buildings, roads sidewalks, trees, utility poles, manhole covers, fire hydrants, and impervious surfaces. This data is collected in 2D or 3D directly from FLI-MAP data (without need for photo imagery) at scales ranging from 1:500 to 1:5,000 with data delivered in many different CAD, GIS, and engineering formats.
- Photo and video imagery. With the FLI-MAP system both forward and downward imagery is collected. The video imagery can be used for simulations and trainings of for example railway operators. The photos can be used as proof of the situation before any construction work is executed and for mapping applications. Clients also use the imagery for assessing local situations when they have to decide to grant permits for new constructions.
- Orthorectified photo mosaic. Orthomosaics from digital still imagery can be produced at 5 cm to 15 cm (ground) per pixel for detailed feature mapping. FLI-MAP also offers faster and more economical image mosaics from the line-scan imagery at a lesser image resolution (equal to the lidar point data resolution).
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Activities
- Oil & Gas Industry
- Well site planning: preliminary well site plans to expedite well placement, planning, permitting, design, and engineering
- Pipeline routing and management: route planning including volumetric analysis and environmental disturbance, 3D visualization of existing and proposed routes for permitting and engineering, building and land moving permissions, mapping of special protection zones for risk mitigation and emergency preparedness, encroachment control, integration of third-party lines, and infrastructure
- Mining Industry
- Calculations of differences in the terrain over time
- Resource volumetric calculations and consumption measurement for large and small open pits or waste disposal areas
- Site planning: rail and road access planning/development, camp and facility placement, electrical power transmission, and generation planning
- Construction Industry
- Land development: residential/commercial development, new roads, reconstruction of existing roads, golf courses, race track design, rail-road rehabilitation, vine yards, gardens, sport fields, leisure areas, and beaches to name a few
- Government
- Urban planning
- Infrastructure development
- Floodplain mapping: production or updating of flood insurance rate maps
- Taxation purposes (e.g. control of construction in backyards for which no permits has been granted)
- Hazard mapping: simulation and modeling, landslide/erosion mapping, environmental impact studies
- Emergency response and preparedness
- Electric Utilities
- Powerline route planning: corridor mapping and planning of tower locations on new routes, environmental analysis
- Powerline mapping and maintenance: thermal rating and capacity studies, overhead clearance (“sag”) and right-of-way infringement studies (“danger trees”, encroachments), rebuild and reconducting, calculation of uneven leg extensions, catenary analysis
- Green power generation: hydro-electric facility planning (including flood-level limit determination), wind farm planning (including wind current modeling and legal land surveys)
- Water Resources Management
- Levees and flood defense management: rapid checking of heights and safety of the dykes, inventory and asset mapping, and effective maintenance of obstructing vegetation
- Floodplain mapping: hydrographic network mapping, watershed delineation, and input for inundation models
- Transportation
- Asset management (including top-of-rail, switches, frogs, crossings, overhead wires and signals)
- Track clearances
- Vegetation analysis
- Route planning
- Determination of rail, slope, and grade
- Drainage assessments
- 3D visualization of existing and proposed routes
- Asset management
- Construction planning
- Assess road surface drainage
- Location referencing
- Route planning
- Preliminary design and quantity estimates
- Safety assessments
- 3D visualization of existing and proposed routes
Related Links
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geotechnical services
lidar mapping
Fugro companies that provide this service
