Dataset Identification:
- LiDAR (Light Detection and Ranging) discrete-return point cloud data are available in the American Society for Photogrammetry and Remote Sensing (ASPRS) LAS format. The LAS format is a standardized binary format for storing 3-dimensional point cloud data and point attributes along with header information and variable length records specific to the data. Millions of data points are stored as a 3-dimensional data cloud as a series of x (longitude), y (latitude) and z (elevation) points. A few older projects in this collection are in ASCII format. Acquired LiDAR data over an Area of Interest (AOI) entire of Orange County California. The acquisition plan entailed a nominal point spacing of 1.76 points per meter square and a side lap of 40% between flight lines. The AOI covers 696 square miles.
- Title 2011 USGS Lidar: Orange County (CA)
- publication Date 2015-01-16
- organisation Name NOAA's Ocean Service, Office for Coastal Management (OCM)
- Contact information
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- Address
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- , Charleston, SC
- organisation Name U.S. Geological Survey (USGS)
- organisation Name Lake County Department of Information and Technology/GIS Mapping Division
- organisation Name Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
- organisation Name
- Contact information
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- Linkage for online resource
- organisation Name
- Contact information
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- Linkage for online resource
- organisation Name
- Contact information
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- Linkage for online resource
- organisation Name
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- Linkage for online resource
Theme keywords (theme):
Remote Sensing
Topography
Elevation
Light Detection and Ranging
3-dimensional
point cloud
LiDAR
radar
LAS
Lidar
Laser
- Title None
Location keywords:
U.S.
Orange County
California
- Title None
purpose:
Browse image (thumbnail):
- maintenance or update frequency: asNeeded
- Constraints
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- Use limitation statement:
- Any conclusions drawn from the analysis of this information are not the responsibility of Merrick & Co, USGS, NOAA, the Office for Coastal Management or its partners.
- Legal Constraints
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- use constraint: otherRestrictions
- Other constraints
- Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. These data depict the heights at the time of the survey and are only accurate for that time.
- Legal Constraints
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- Access Constraints otherRestrictions
- Other constraints
- Access Constraints: None
Resource extent
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- westBoundLongitude -118.122754
- eastBoundLongitude -117.509822
- northBoundLatitude 33.955557
- southBoundLatitude 33.428832
Geographic Bounding Box - Temporal Extent
Geographic Extent
2011-12-17
2012-02-09
- A report for this project is available at: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/4793/supplemental/ca2011_usgs_orange_m4793_surveyreport.pdf A footprint of this data set may be viewed in Google Earth at: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/4793/supplemental/ca2011_usgs_orange_m4793.kmz 3D Breaklines are available for this dataset however NOAA has not evaluated these and therefore are only available by request.
Content information: feature catalog description
- Included With Dataset
Data quality information
Scope of quality information
- name Of Measure Horizontal Positional Accuracy Report
- evaluation Method Description The ortho imagery horizontal positional accuracy and the assurance of that accuracy depend, in part, on the accuracy of the data inputs to the rectification process. These inputs consist of the digital terrain model (DTM), fully digital analytic aerotriangulation (FDAAT) control and methods, the photo source camera calibration, scanner calibration, and aerial photographs. The orthoimagery output from these inputs meet National Map Accuracy Standards (NMAS). Aerial cameras have current certification from the USGS, National Mapping Division, Optical Science Laboratory. Test calibration scans are performed on all source photography scanners.
- name Of Measure Horizontal Positional Accuracy
- measure Description Not Tested, see report for clarification.
- Quantitative Result
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- result value 1.0
- value Units
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- name Of Measure Vertical Positional Accuracy Report
- evaluation Method Description Required to meet 0.125 m RMSE(z)
- name Of Measure Vertical Positional Accuracy
- measure Description Tested RMSE(z) in meters for checkpoints. FVA Computed to 0.19 m. and a CVA of 0.17 m.
- Quantitative Result
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- result value 0.10
- value Units
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- evaluation Method Description The dataset was reviewed to ensure complete coverage of the project area.
- measure Description Completed lidar data acquisition and data calibration for the project area.
Resource distribution information
Distributor
- organisation Name NOAA Office for Coastal Management
- Contact information
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- Telephone
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- Voice 843-740-1202
- Address
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- 2234 South Hobson Avenue, Charleston, SC, 29405-2413
- electronic Mail Address coastal.info@noaa.gov
- maintenance or update frequency: annually
- notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2015-05-04 version of the FGDC RSE to ISO 19115-2 transform.
- notes: Translated from FGDC 2015-06-11T11:44:50.497-04:00
- organisation Name NOAA Office for Coastal Management
- Contact information
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- Telephone
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- Voice 843-740-1202
- Address
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- 2234 South Hobson Avenue, Charleston, SC, 29405-2413
- electronic Mail Address coastal.info@noaa.gov