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LiDAR ApplicationsOverview. Summer 2012. Definition. LiDAR: Li ght D etection A nd R anging. Basic Principles. Combination of 3 technologies Laser Ranging GPS IMU Active Sensor Can be acquired at night Platforms Fixed or Rotary Wing Aircraft Terrestrial; Vehicle & Tripod.

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LiDAR ApplicationsOverview

Summer 2012


Definition
Definition

LiDAR: Light Detection And Ranging


Basic principles
Basic Principles

  • Combination of 3 technologies

    • Laser Ranging

    • GPS

    • IMU

  • Active Sensor

    • Can be acquired at night

  • Platforms

    • Fixed or Rotary Wing Aircraft

    • Terrestrial; Vehicle & Tripod



Basic principles2
Basic Principles

Pulse Repetition Frequency (PRF)

Multi-pulse (in air)

Multiple Returns

Scan Frequency

Scan Angle

Platform Speed and Altitude

Intensity


Lidar categories
LiDAR Categories

Terrestrial

Topographic

Bathymetric

Mobile

Static

Fixed Wing

Rotary Wing

Aerial


Aerial sensors
Aerial Sensors

Examples:

Optech

Leica

Riegl



Fixed wing1
Fixed Wing

Cabin Footprint:


Fixed wing2
Fixed Wing

Wide Area Mapping

FloodPlains

Counties/States

Forestry Applications

Landfills/Quarries/Volume Analysis

Most 1’ & 2’ Contour Interval Projects

Typical Applications:


Fixed wing3
Fixed Wing

500m – 2000m AMT

70kHz – 200kHz

Point Spacing .5m – 2m (Single Swath)

Swath 200m – 1km and higher

Focus on covering more ground, more quickly

Typical Parameters:


Rotary wing
Rotary Wing

GeoDigital International


Rotary wing1
Rotary Wing

Corridor Mapping

DOT

Transmission

Typical Applications:


Rotary wing2
Rotary Wing

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

Typical Parameters:



Static lidar
Static LiDAR

Examples:

  • Leica HDS – Scan Station

  • Riegl VZ-400


Static lidar1
Static LiDAR

Refineries

Substations

Intersections

Pipes

Lock Walls

Caves/Mines

Typical Applications:


Static lidar2
Static LiDAR

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

Typical Parameters:



Mobile lidar
Mobile LiDAR

Examples:

Optech Lynx

Street Mapper


Mobile lidar1
Mobile LiDAR

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

Typical Parameters:


Mobile lidar2
Mobile LiDAR

Corridor Mapping

DOT

Street Level Visualization

Transmission

Rail Corridors/Tunnels

Typical Applications:






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