LiDAR Introduction

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LiDAR Introduction. LiDAR = Light Detection and Ranging. Airborne laser scanning rapid high-density survey of Earths surface Accurate and reliable surveys, faster and with higher density than conventional surveys. How does LiDAR work?. Simultaneously - PowerPoint PPT Presentation

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  • LiDAR Introduction

  • LiDAR = Light Detection and RangingAirborne laser scanning rapid high-density survey of Earths surfaceAccurate and reliable surveys, faster and with higher density than conventional surveys

  • How does LiDAR work?SimultaneouslyMeasure trajectory of aircraft in three dimensionsMeasure orientation of laser scanner about three rotations axesTransmit and receive laser pulses, measure the time-of-flight (i.e. range to reflecting surface)ConsequentlyKnow the coordinates of 150,000 points surveyed per secondMap the surface of the Earth in high density

  • CK Aerial Surveys InfrastructureAS350 Squirrel

    Leica LiDAR & Camera

  • CK Aerial Surveys SpecificationsPoint density 15 to 60 points per m2Vertical accuracy 7 to 10 cmHorizontal accuracy 5 to 7 cm in both the along- and across-track componentsImagery scale 1:10,000Pixel ground separation distance 5 to 7 cmResult formats CAD designs, GIS shape files, GeoTIFF images

  • CK Aerial Surveys ProductsLaser point cloud

  • CK Aerial Surveys ProductsContours

  • CK Aerial Surveys ProductsHigh-resolution aerial photography

  • CK Aerial Surveys ProductsPower line mapping

  • CK Aerial Surveys ProductsFlood plain mapping

  • CK Aerial Surveys ProductsVolumetric calculations for mining applicationsRepeat surface survey compare surfaces accurately calculate volume of removed ore

  • Survey Comparison

    TechniqueTraditionalCK Aerial SurveysFixed WingHorizontal accuracy2 cm5 7 cm10+ cmVertical accuracy3 cm7 10 cm10+ cmPoint density1 every 10 20 m215 60 per m21 5 per m2ConditionsWeather permittingWeather permittingClearImagery scaleN/A1:10,0001:10,000Pixel sizeN/A5 7 cm GSD5 7 cm GSDSite accessRequiredNot requiredNot requiredRapid deploymentYesYesNo

  • www.ckas.co.zainfo@ckas.co.za+27 11 949 8904

  • Executive SummaryAerial laser scanning is rapidly becoming the preferred surveying technique. Its high-resolution and rapid results, which are accurate enough for the most construction and mining applications, make aerial laser scanning (or LiDAR) the surveying technology of choice for a changing environment. Combined with geo-referenced high-resolution imagery, the spatial dataset becomes even more intuitive to decision makers and engineers alike.

    *www.olmweb.dot.state.mn.us & gulfsci.usgs.gov *www.trimble.com & www.leica-geosystems.com*www.leica-geosystems.com*

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