lidar applicationsoverview

26
LiDAR Applications Overview Summer 2012

Upload: walker

Post on 22-Feb-2016

40 views

Category:

Documents


0 download

DESCRIPTION

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

TRANSCRIPT

Page 1: LiDAR  ApplicationsOverview

LiDAR ApplicationsOverview

Summer 2012

Page 2: LiDAR  ApplicationsOverview

Definition

LiDAR: Light Detection And Ranging

Page 3: LiDAR  ApplicationsOverview

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

Page 4: LiDAR  ApplicationsOverview

Basic Principles

IMU

Page 5: LiDAR  ApplicationsOverview

Basic Principles

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

Page 6: LiDAR  ApplicationsOverview

LiDAR Categories

Aerial Terrestrial

Mobile StaticTopographic Bathymetric

Fixed Wing Rotary Wing

Page 7: LiDAR  ApplicationsOverview

Aerial SensorsExamples: Optech Leica Riegl

Page 8: LiDAR  ApplicationsOverview

Fixed Wing

Page 9: LiDAR  ApplicationsOverview

Fixed Wing

Cabin Footprint:

Page 10: LiDAR  ApplicationsOverview

Fixed WingTypical Applications:

Wide Area MappingFloodPlainsCounties/StatesForestry ApplicationsLandfills/Quarries/Volume AnalysisMost 1’ & 2’ Contour Interval Projects

Page 11: LiDAR  ApplicationsOverview

Fixed Wing

Typical Parameters:

500m – 2000m AMT70kHz – 200kHzPoint Spacing .5m – 2m (Single Swath)Swath 200m – 1km and higher

Focus on covering more ground, more quickly

Page 12: LiDAR  ApplicationsOverview

Rotary Wing

GeoDigital International

Page 13: LiDAR  ApplicationsOverview

Rotary WingTypical Applications:

Corridor MappingDOTTransmission

Page 14: LiDAR  ApplicationsOverview

Rotary Wing

Typical 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 ID

Page 15: LiDAR  ApplicationsOverview

Rotary Wing

Page 16: LiDAR  ApplicationsOverview

Static LiDAR

Leica HDS – Scan Station

Riegl VZ-400

Examples:

Page 17: LiDAR  ApplicationsOverview

Static LiDARTypical Applications:

RefineriesSubstationsIntersectionsPipesLock WallsCaves/Mines

Page 18: LiDAR  ApplicationsOverview

Static LiDAR

Typical 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

Page 19: LiDAR  ApplicationsOverview

Static LiDAR

Page 20: LiDAR  ApplicationsOverview

Mobile LiDAR

Optech Lynx Street Mapper

Examples:

Page 21: LiDAR  ApplicationsOverview

Mobile LiDAR

Typical 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

Page 22: LiDAR  ApplicationsOverview

Mobile LiDARTypical Applications:

Corridor MappingDOTStreet Level VisualizationTransmissionRail Corridors/Tunnels

Page 23: LiDAR  ApplicationsOverview

Mobile LiDAR

Page 24: LiDAR  ApplicationsOverview

Mobile LiDAR

Page 25: LiDAR  ApplicationsOverview

Mobile LiDAR

Page 26: LiDAR  ApplicationsOverview

Questions?