LiDAR ApplicationsOverview

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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. - PowerPoint PPT Presentation

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LiDAR ApplicationsOverview Summer 2012DefinitionLiDAR: Light Detection And RangingBasic PrinciplesCombination of 3 technologiesLaser RangingGPSIMUActive Sensor Can be acquired at nightPlatformsFixed or Rotary Wing AircraftTerrestrial; Vehicle & Tripod

Basic Principles

IMUBasic PrinciplesPulse Repetition Frequency (PRF)Multi-pulse (in air)Multiple ReturnsScan FrequencyScan AnglePlatform Speed and AltitudeIntensity

LiDAR CategoriesAerialTerrestrialMobileStaticTopographicBathymetricFixed WingRotary WingAerial SensorsExamples:OptechLeicaRiegl

Fixed Wing

Fixed WingCabin Footprint:

Fixed WingTypical Applications:Wide Area MappingFloodPlainsCounties/StatesForestry ApplicationsLandfills/Quarries/Volume AnalysisMost 1 & 2 Contour Interval Projects

Fixed WingTypical Parameters:500m 2000m AMT70kHz 200kHzPoint Spacing .5m 2m (Single Swath)Swath 200m 1km and higher

Focus on covering more ground, more quicklyRotary Wing

GeoDigital InternationalRotary WingTypical Applications:Corridor MappingDOTTransmission

Rotary WingTypical Parameters:Acquisition a couple hundred feet above the groundUpwards of 200kHz10-30 points per meterSwath 200-1000

Focus on max point density for small feature IDRotary Wing

Static LiDAR

Leica HDS Scan StationRiegl VZ-400

Examples:Static LiDARTypical Applications:RefineriesSubstationsIntersectionsPipesLock WallsCaves/Mines

Static LiDARTypical Parameters:Usually tripod based within a couple hundred feet of targetSeveral points per square foot to several points per inchUsually accompanied with imaging sensor for RGB assignmentControlled with prisms occupying surveyed control points

Focus on max point density for small feature ID and modeling

Static LiDAR

Mobile LiDAROptech LynxStreet Mapper

Examples:

Mobile LiDARTypical Parameters:Several points per square footUsually accompanied with imaging sensor for RGB assignmentControlled with targets occupying surveyed control points

Focus on max point density for small feature IDData often adjusted to control established by level loop for high accuracy grading

Mobile LiDARTypical Applications:Corridor MappingDOTStreet Level VisualizationTransmissionRail Corridors/Tunnels

Mobile LiDAR

Mobile LiDAR

Mobile LiDAR

Questions?