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Tennessee Business Planning Technical Overview on Enhanced Elevation (Zsolt Nagy)

Tennessee Business Planning Technical Overview on Enhanced Elevation (Zsolt Nagy). ENHANCED ELEVATION OVERVIEW Regional Forum Presentation Chattanooga 8/23/11 Alcoa 8/24/11 Blountsville 8/25/11 Murfreesboro 8/31/11 Jackson 9/1/11.

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Tennessee Business Planning Technical Overview on Enhanced Elevation (Zsolt Nagy)

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  1. Tennessee Business PlanningTechnical Overview on Enhanced Elevation (Zsolt Nagy) ENHANCED ELEVATION OVERVIEW Regional Forum Presentation Chattanooga 8/23/11 Alcoa 8/24/11 Blountsville 8/25/11 Murfreesboro 8/31/11 Jackson 9/1/11
  2. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation
  3. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Light Detection and Ranging Before LiDAR: RaDAR Efficient Less Costly Accurate Direct Measurements Preferred Technology for EE Multiple Applications
  4. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation LiDAR Platforms Mobile Terrestrial Airborne
  5. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation LiDAR Components Global Positioning System Inertial Measurement Unit Laser Scanner
  6. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation LiDAR Basics A pulse of light energy is emitted and the precise time is recorded. The reflection of that pulse is detected and the precise time is recorded. Knowing the speed of light, the range can be determined. Knowing the position & attitude of the sensor, the XYZ coordinate of the target can be calculated.
  7. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation LiDAR Basics
  8. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation LiDAR Output Points, Many points Returns, Many Returns Returns per Pulse First, Interim, Last
  9. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation LiDAR Output Many points Many Returns First, Interim, Last Point Cloud Classified Point Cloud ASPRS Classes TN:1,2,7,8,9,&12
  10. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation LiDAR Output Intensity Image Breaklines Contours Elevation Model (Bare Earth) Other Output
  11. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Intensity Image Monochrome Illumination level of the returns are recorded Raster product GeoTiff
  12. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Breaklines Feature marking a change in the smoothness or continuity of a surface An abrupt change in elevation Stream, ridge, road, building
  13. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Breaklines
  14. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Contours
  15. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Bare Earth Elevation Model (100’)
  16. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Bare Earth Elevation Model(50’)
  17. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Bare Earth Elevation Model (25’)
  18. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Bare Earth Elevation Model (5’)
  19. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Bare Earth Elevation Model (100,50,25,5)
  20. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation
  21. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Other Output: Surface Models
  22. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Other Output: Slope and Aspect
  23. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Other Output: Hillshade
  24. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Functional Uses and Activities Mapping confined urban channels vs natural streams In the creation of seamless topo/bathy products Integration into the National Elevation Dataset Derivation of stream channel characteristics Mapping and monitoring coastal hazards Identify small hydrologic features (ditches, tile drain) Mapping fish habitat Characterizing wildlife habitat Identification of canopy gaps Flood inundation modeling Derivative hydrologic profiling Disaster response Fire science High-resolution floodplain mapping Characterization of canopy structure Defining drainage basins Jokulhaup monitoring Fault-rupture mapping Monitoring sea level rise Natural Hazards Identifying landslide-prone areas Creating topographic maps Glacier changes Carbon sequestration assessments Homeland security scenarios Delineation of canopy surface and forest metrics Determination of watershed characteristics Delineation of building structures Characterization of urban settings Monitoring long-term shoreline change Mapping land cover and land use Measuring earthquake deformation Delineation of volcanic structure Monitoring volcano hazards Urban mapping Powerline mapping Hydrologic Modeling Bare earth products Monitoring debris flows Wave height surveys Sedimentation into rivers Monitoring geomorphic processes Identification of ponding areas Mapping wetland drainage Creation of synthetic drainage networks Identifying culverts Transportation mapping 3-D visualization of buildings Volume visualization Identifying bird habitats
  25. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Primary Steps in a LiDAR Project Planning Calibration Acquisition Pre-processing Post Processing Product Generation Data, Distribution, and Archival Management
  26. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Conditions Leaf Off Cloud free Fog Free Flood Free Snow Free Night or Day
  27. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Resolution and Accuracy Nominal Point Spacing Horizontal Accuracy Vertical Accuracy Anticipated Contour Equivalent Elevation Model Cell Size Intensity Image Cell Size
  28. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation
  29. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation Requirements Specifications
  30. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation
  31. Tennessee Business PlanningLiDAR Process for Acquiring Enhanced Elevation
  32. Tennessee Business PlanningQuestions for Facilitated Discussion on Enhanced Elevation (Grady) Is anyone still wondering what we are talking about and why we are here? Can anyone describe a situation in their jurisdiction where they wish they could have had enhanced elevation data (i.e. better then what they had available)? Can anyone describe a situation where they did have enhanced elevation data, and how it positively made a difference?
  33. Tennessee Business PlanningQuestions for Facilitated Discussion on Enhanced Elevation (Cont’d) What does the State of Tennessee need for enhanced elevation data? Why do we need it? Are there any substitutes that are good enough? How many people still rely primarily on USGS contours or digital elevation models from USGS? Are the capabilities to take advantage of enhanced elevation data out there in the counties and local governments? What role should the private sector play?
  34. Tennessee Business PlanningNetworking Break NETWORKING BREAK then FACILITATED DISCUSSION
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