1. LiDAR ApplicationsOverview
Summer 2012

2. Definition
LiDAR: Light Detection And Ranging

3. Basic Principles Combination of 3 technologies Active Sensor Platforms
Laser Ranging
GPS
IMU
Active Sensor
Can be acquired at night
Platforms
Fixed or Rotary Wing Aircraft
Terrestrial; Vehicle & Tripod

4. Basic Principles
IMU

5. Basic Principles Pulse Repetition Frequency (PRF) Multi-pulse (in air)
Multiple Returns
Scan Frequency
Scan Angle
Platform Speed and Altitude
Intensity

6. LiDAR Categories Aerial Terrestrial Topographic Bathymetric Mobile
Static
Fixed Wing
Rotary Wing

7. Aerial Sensors
Examples:
Optech
Leica
Riegl

8. Fixed Wing

9. Fixed Wing
Cabin Footprint:

10. Fixed Wing Typical Applications: Wide Area Mapping FloodPlains
Counties/States
Forestry Applications
Landfills/Quarries/Volume Analysis
Most 1’ & 2’ Contour Interval Projects

11. Fixed Wing Typical Parameters: 500m – 2000m AMT 70kHz – 200kHz
Point Spacing .5m – 2m (Single Swath)
Swath 200m – 1km and higher
Focus on covering more ground, more quickly

12. Rotary Wing
GeoDigital International

13. Rotary Wing
Typical Applications:
Corridor Mapping
DOT
Transmission

14. Rotary Wing Typical Parameters:
Acquisition a couple hundred feet above the ground
Upwards of 200kHz
10-30 points per meter
Swath 200’-1000’
Focus on max point density for small feature ID

15. Rotary Wing

16. Static LiDAR
Examples:
Leica HDS – Scan Station
Riegl VZ-400

17. Static LiDAR Typical Applications: Refineries Substations
Intersections
Pipes
Lock Walls
Caves/Mines

18. Static LiDAR Typical Parameters:
Usually tripod based within a couple hundred feet of target
Several points per square foot to several points per inch
Usually accompanied with imaging sensor for RGB assignment
Controlled with prisms occupying surveyed control points
Focus on max point density for small feature ID and modeling

19. Static LiDAR

20. Mobile LiDAR
Examples:
Optech Lynx
Street Mapper

21. Mobile LiDAR Typical Parameters: Several points per square foot
Usually accompanied with imaging sensor for RGB assignment
Controlled with targets occupying surveyed control points
Focus on max point density for small feature ID
Data often adjusted to control established by level loop for high accuracy grading

22. Mobile LiDAR Typical Applications: Corridor Mapping DOT
Street Level Visualization
Transmission
Rail Corridors/Tunnels

23. Mobile LiDAR

24. Mobile LiDAR

25. Mobile LiDAR

26. Questions?