48142
2017 NOAA/OCM Unmanned Aerial System Lidar: Grand Bay NERR
2017 gbnerr uas lidar m8386
Data Set
Published / External
37231
Lidar
Project
Completed
2017-10-15
Quantum Spatial (QSI) and PrecisionHawk (PH) collected lidar for test sites within the Grand Bay National Estuarine Research Reserve (NERR) using an unmanned aerial system (UAS). Four sites were flown, covering a total of 177 acres. A fixed-wing PH Lancaster (revision 5) platform was used, carrying a Velodyne Puck VLP-16 based lidar system. The system provides 2 returns (strongest and last) with a pulse rate of 300 kHz using a 903 nm wavelength laser. Flights were conducted from May 9-11, 2017 and were flown at 50 meters above ground level.
Specifications for the collection included 30 pulses per square meter and 0.10 meter RMSE vertical accuracy in non-vegetated areas. The average first return density was over 105 points per square meter with an average ground classified density of over 3 points per square meter.
Deliverables included the lidar point cloud in LAS/LAZ format. Data were delivered in UTM zone 16 NAD83(2011) horizontally and NAVD88 (Geoid12b) meters vertically.
Lidar point clouds were projected back to geographic coordinates for storage in the Digital Coast Data Access Viewer and the vertical datum was converted to the ellipsoid.
Original contact information:
Contact Org: NOAA Office for Coastal Management
Phone: 843-740-1202
Email: coastal.info@noaa.gov
Test the ability to provide lidar data from a UAS and determine if it is better able to penetrate marsh grasses.
10165
A final report for this project may be viewed at:
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8386/supplemental/NOAA_UAS_Grand_Bay_LiDAR_Technical_Data_Report_Combined.pdf
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > TOPOGRAPHICAL RELIEF MAPS
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
Theme
ISO 19115 Topic Category
elevation
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MISSISSIPPI
Theme
Bare earth
Theme
Bare ground
Theme
Drone
Theme
High-resolution
Theme
Light Detection and Ranging
Theme
UAS
Theme
Unmanned Aerial System
Office for Coastal Management
Charleston
SC
Data Set
None Planned
Map (digital)
Any conclusions drawn from the analysis of this information are not the responsibility of the Quantum Spatial, PrecisionHawk, the Office for Coastal Management, or its partners.
NOAA, Quantum Spatial, PrecisionHawk, GBNERR
Data Steward
2017-10-15
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Distributor
2017-10-15
Organization
Office for Coastal Management
OCM
2234 South Hobson Avenue
Charleston
SC
29405-2413
https://www.coast.noaa.gov/
Metadata Contact
2017-10-15
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Point of Contact
2017-10-15
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Ground Condition
-88.42051
-88.41041
30.41069
30.35701
Range
2017-05-09
2017-05-11
Yes
Unclassified
This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer
;
None
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.
2018-02-27
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8386
2017-10-15
Organization
Office for Coastal Management
Customized Download
Customized Download allowing user to pick projection, datum, file format, etc.
Zip
Zip
2018-02-27
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8386/index.html
2017-10-15
Organization
Office for Coastal Management
Bulk Download
Simple download of data files.
LAZ
LAS/LAZ - LASer
Zip
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8386/supplemental/2017_GBNERR_UAS_area.kmz
2017_GBNERR_UAS_area.kmz
Browse Graphic
kmz
Browse graphic showing the area of coverage.
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8386/supplemental/
Technical report
Online Resource
pdf
Contractor technical report from data collection.
2017-09-25
Date that the source FGDC record was last modified.
2017-11-14
Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.
2018-02-08
Partial upload of Positional Accuracy fields only.
2018-03-13
Partial upload to move data access links to Distribution Info.
unknown
Vertical Accuracy reporting is designed to meet guidelines presented in the National Standard for Spatial Data Accuracy (NSSDA) (FGDC, 1998) and the ASPRS Guidelines for Vertical Accuracy Reporting for LiDAR Data V1.0 (ASPRS, 2014). The statistical model compares known ground survey points (GSPs) to the closest laser point. Vertical accuracy statistical analysis uses ground survey points in open areas where the LiDAR system has a "very high probability" that the sensor will measure the ground surface and is evaluated at the 95th percentile.
For the Grand Bay NERR area, NOAA and Grand Bay NERR collected 106 points in non-vegetated areas for comparison. Analysis indicated a vertical RMSE of 0.072 meters. Non-parametric examination of the errors showed a 95% confidence level of 0.145 meters.
; Quantitative Value: 0.072 meters, Test that produced the value: Tested to meet FVA at a 95 percent confidence level in meters.
LiDAR data has been collected and processed for all areas within the project study area.
Upon receipt from vendor (Quantum Spatial), all LiDAR data was independently reviewed by staff from the NOAA Office for Coastal Management (OCM) to ensure project specifications were met. All data were inventoried for completeness and data were checked for quality, which included examining LiDAR data for errors associated with internal data consistency, model quality, and accuracy.
Processed Lidar Data
Organization
Quantum Spatial, Inc
Originator
1
The LiDAR survey occurred between May 9, 2017 and May 11, 2017 using a Velodyne Puck VLP-16 laser system mounted in PrecisionHawk's Lancaster Rev 5 Dual-Frequency GPS UAS and flown by PrecisionHawk pilots. Upon completion of data acquisition, Precision Hawk processed SBETs and raw point data into geolocated swaths. Processing tasks included GPS control computations, smoothed best estimate trajectory (SBET) calculations, kinematic corrections, and calculation of laser point position. Ground control data was collected by Precision Hawk to be used in the post-processing and calibration of the LIDAR flights. Following calibration, QSI initiated a suite of automated and manual techniques to classify the LiDAR points and create the requested deliverables. Processing methodologies were tailored for the landscape.
Classifications were as follows:
Unclassified (class 1) - Laser returns that are not included in the ground class or other vegetation classes, retained in order to avoid false vegetation classing within roads or other bare ground surfaces.
Ground (class 2) - Laser returns that are determined to be ground using automated and manual cleaning algorithms.
Low Noise (class 7) - Laser returns that are determined to be artificial points below the ground surface.
Water (class 9) - Laser returns that are determined to be water using manual cleaning techniques.
Near Ground Noise (class 14) - Laser returns that are determined to be artificial points between 0 and 20 meters above the ground surface.
High Noise (class 18) - Laser returns that are determined to be artificial points, equal to or greater than 20 meters above the ground surface.
2017-01-01T00:00:00
2
The NOAA Office for Coastal Management (OCM) received the files in laz format. The files contained Lidar elevation and intensity measurements. The data were in UTM zone 16 (NAD83 2011 Epoch 2010.0) and NAVD88 (Geoid12b) vertical meters. OCM performed the following processing to the data to make it available within the Digital Coast:
1. The data were converted from UTM to geographic coordinates.
2. The data were converted from NAVD88 (orthometric) heights to NAD83(2011) ellipsoid heights using Geoid12b grids.
The data was received without a metadata record. This record was produced based on the data quality report.
2017-09-01T00:00:00
Organization
Office for Coastal Management
OCM
2234 South Hobson Avenue
Charleston
SC
29405-2413
https://www.coast.noaa.gov/
Processed Lidar Data
gov.noaa.nmfs.inport:48142
Anne Ball
2017-11-14T14:19:39
SysAdmin InPortAdmin
2023-10-17T16:12:14
2022-03-16
Office for Coastal Management
OCM
1002
Public
No
2022-03-16
1 Year
2023-03-16