Ground control point and transect locations associated with images collected during unmanned aerial systems (UAS) flights over The Lake Ontario shoreline in the vicinity of Sodus Bay, New York in July 2017

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2018
Title:
Ground control point and transect locations associated with images collected during unmanned aerial systems (UAS) flights over The Lake Ontario shoreline in the vicinity of Sodus Bay, New York in July 2017
Edition: 1.0
Geospatial_Data_Presentation_Form: digital text files
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9XQYCD0
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: https://doi.org/10.5066/P9XQYCD0
Online_Linkage:
https://www.sciencebase.gov/catalog/item/5b1ee15fe4b092d965254a5c
Larger_Work_Citation:
Citation_Information:
Originator: Christopher R. Sherwood
Originator: Sandra M. Brosnahan
Originator: Seth D. Ackerman
Originator: Jonathan Borden
Originator: Ellyn T. Montgomery
Originator: Elizabeth A. Pendleton
Originator: Emily J. Sturdivant
Publication_Date: 2018
Title:
Aerial imagery and photogrammetric products from unmanned aerial systems (UAS) flights over the Lake Ontario shoreline at Sodus Bay, New York, July 12 to 14, 2017.
Edition: 1.0
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9XQYCD0
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Sherwood, C.R., Brosnahan, S.M., Ackerman, S.D., Borden, Jonathan, Montgomery, E.T., Pendleton, E.A., Sturdivant, E.J., 2018, Aerial imagery and photogrammetric products from unmanned aerial systems (UAS) flights over the Lake Ontario shoreline at Sodus Bay, New York, July 12 to 14, 2017: U.S. Geological Survey data release, https://doi.org/10.5066/P9XQYCD0.
Online_Linkage: https://doi.org/10.5066/P9XQYCD0
Online_Linkage:
https://www.sciencebase.gov/catalog/item/5b0800a7e4b0ac450c99d116
Description:
Abstract:
Low-altitude (80-100 meters above ground level) digital images were obtained from a camera mounted on a 3DR Solo quadcopter, a small unmanned aerial system (UAS), along the Lake Ontario shoreline in New York during July 2017. These data were collected to document and monitor effects of high lake levels, including shoreline erosion, inundation, and property damage in the vicinity of Sodus Bay, New York. This data release includes images tagged with locations determined from the UAS GPS; tables with updated estimates of camera positions and attitudes based on the photogrammetric reconstruction; tables listing locations of the base stations, ground control points, and transect points; geolocated, RGB-colored point clouds; orthomosaic images; and digital elevation models for each of the survey regions. Collection of these data was supported by the Federal Emergency Management Agency, the State of New York Departments of State and Environmental Conservation, and the USGS Coastal and Marine Geology Program and was conducted under USGS field activity number 2017-042-FA.
Purpose:
The objective of obtaining the ground control points (or targets) was to constrain the photogrammetric products constructed from the aerial images taken at Sodus Bay, by providing survey-quality ground validation, which far exceeds the accuracy that can be provided from the photo geolocations alone. Transect points are used to validate the final accuracy of the products.
Supplemental_Information:
For more information about this field activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-042-FA. Photogrammetric processing using ground control points produces estimates of camera location and attitude (roll, pitch, and yaw) with much higher accuracies than can be provided by a GPS attached to the UAS. These tables contain position information derived using surveying techniques, and are used in post-processing to improve the quality of the positioning in the final photogrammetric products.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20170712
Ending_Date: 20170714
Currentness_Reference: ground condition, temporary markers
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -76.98639266
East_Bounding_Coordinate: -76.93922626
North_Bounding_Coordinate: 43.27609807
South_Bounding_Coordinate: 43.26603719
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5b1ee15fe4b092d965254a5c
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: State of New York Department of State
Theme_Keyword: State of New York Department of Environmental Conservation
Theme_Keyword: Federal Emergency Management Agency
Theme_Keyword: low-altitude aerial imagery
Theme_Keyword: lakeshore
Theme_Keyword: transect points
Theme_Keyword: ground control points
Theme_Keyword: navigation
Theme_Keyword: Global Positioning System
Theme_Keyword: Spectra Precision SP80
Theme_Keyword: Carlson SurvCE
Theme_Keyword: GPS
Theme_Keyword: field activity number 2017-042-FA
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: navigational data
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: inlandWaters
Theme_Keyword: location
Theme_Keyword: elevation
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: USA
Place_Keyword: Great Lakes
Place_Keyword: New York
Place_Keyword: Lake Ontario
Place_Keyword: Sodus, NY
Place_Keyword: Sodus Point
Place_Keyword: Sodus Bay
Place_Keyword: Crescent Bar
Place_Keyword: Lake Bluff
Place_Keyword: Charles Point
Place_Keyword: Sodus Point
Place_Keyword: Greig Street
Access_Constraints: none
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Sandra Brosnahan
Contact_Position: Physical Scientist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2265
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sbrosnahan@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
https://www.sciencebase.gov/catalog/file/get/5b1ee15fe4b092d965254a5c/?name=2017042FA_SodusBay_GCPs_browse.jpg
Browse_Graphic_File_Description:
Browse image of the locations of the ground control points (red) and transect locations (yellow).
Browse_Graphic_File_Type: JPEG
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Three Spectra Precision SP80 GNSS receivers were used to collect the ground control points and transect coordinates. Two of the units functioned as "rovers" and the third was a stationary base broadcasting a signal from a static point, later used to correct all rover coordinates. Overall measured horizontal accuracy based on re-occupation of the same location was 1.5 cm and vertical accuracy was 0.5 cm.
Logical_Consistency_Report:
The CSV file lists the locations (coordinates in NAD83(2011) UTM zone 18N (EPSG::6347) for the horizontal, and NAVD88 meters, GEOID 12b, for the vertical) for all 57 ground control points, including commercial targets and plywood targets, as well as 251 transect points. The ground control points and transect points were collected at the same time and with the same equipment. The target names (ORIGINAL_ID) are uniquely named (e.g P1, T20, T31), where the “P” indicates plywood target and “T” is a commercial target; each transect (consisting of several GPS fixes along a survey line) has a unique name however the points for that transect are typically named similarly .
Completeness_Report:
Locations for all 57 of the ground control points and 251 transect points collected in the Sodus Bay study area are listed in the CSV text file.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal positions were determined with two GNSS rovers receiving real-time differential corrections from a GNSS base station established over a temporary benchmark in Sodus Bay, NY. The base station was a Spectra model SP80 GNSS receiver with UHF radio and external antenna mounted on a separate tripod. The antenna height was 2.25 m. The coordinates of the reference point were determined from an ultra-rapid precise orbit On-line Positioning User Service (OPUS) solution based on GPS data from an average over three days. Coordinates in NAD83(2011) UTM zone 18N (EPSG::6347), elevation NAVD88 (geoid 12b) for the reference point are: Northing (m) 4798402.548 (+/-0.0085), Easting (m) 280485.392 (+/-0.006), Orthometric elevation (m) 76.329 (+/-0.017). The uncertainties in parentheses represent peak-to-peak values. Both of the rovers were Spectra Precision model SP80 GNSS receivers linked via Bluetooth to a data collector (Carlson CHC LT30 Handheld Terminal running Carlson SurvCE v. 4.06 software under Windows Mobile v. 6.1 Professional operating system). Both rover antennas were mounted on 2-m survey rods with bubble levels and 5-cm (2-inch) sand feet. The estimated uncertainty of target locations was determined by examining differences for repeat measurements of the same target, lumping measurements for all real-time kinematic (RTK) rovers. The mean of the standard deviations for repeat measurements was 1.5 cm (horizontal) and 0.5 cm (vertical). The trasect accuracy is likely less, but was not independently assessed. Transects are used to evaluate the accuracy of the photogrammetry products. Combined with the uncertainty in OPUS fixes for the RTK-GPS base stations, the overall accuracy of the ground control point locations is 1.76 cm (horizontal) and 0.54 cm (vertical). Conversions from satellite coordinates to NAD83(2011) UTM zone 18N (EPSG::6347) and NAVD88 were made by Carlson SurvCE software in the data collector.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Vertical positions were determined with the GNSS rovers receiving real-time differential corrections from a GNSS base station established over a temporary benchmark. (see Horizontal_Positional_Accuracy_Report for a complete description of the survey methods). The estimated the uncertainty of target locations was determined by examining differences for repeat measurements of the same target, lumping measurements for all RTK rovers. The mean of the standard deviations for repeat measurements was 1.5 cm (horizontal) and 0.5 cm (vertical). The trasect accuracy is likely less, but was not independently assessed. Transects are used to evaluate the accuracy of the photogrammetry products. Combined with the uncertainty in OPUS fixes for the RTK-GPS base stations, the overall accuracy of the ground control point locations is 1.76 cm (horizontal) and 0.54 cm (vertical).
Lineage:
Process_Step:
Process_Description:
Fifty-seven ground control points, and 251 transect points, are listed in the CSV file 2017042FA_SodusBay_GCPs.csv. All locations were collected by the USGS field crew over three days of GPS data collection at Sodus Bay, transect points were only collected on the first two days. The targets were moved to accommodate changing data acquisition locations over the two day period. Placed targets included commercial targets (4 ft x 4 ft x 4-mil thick PVC plastic sheets with black and white diamond patterns and grommets in corners; Berntsen International, Inc. product number AT48IC-STK), plywood targets (2 ft x 2 ft x 1/2-inch thick plywood boards painted with black and white squares). The commercial targets were designated Tnn and the plywood targets were designated Pnn, where nn is the one or two digit target number. The transects were acquired typically while traversing between target locations. Transects are utilized after photogrammetric processing to assess positional accuracy of the products. Two differential GPS (Global Positioning System) rover instruments were used by field crews to map targets for ground control points, Spectra Precision model SP80 GNSS (Global Navigation Satellite System) receiver linked via Bluetooth to a data collector (Carlson CHC LT30 Handheld Terminal running Carlson SurvCE v. 4.06 software under Windows Mobile v. 6.1 Professional operating system). Both rover antennas were mounted on 2-m survey rods with bubble levels and 5-cm (2-inch) sand feet. Positions were determined with two GNSS rovers receiving real-time differential corrections from a GNSS base station established over a temporary benchmark. The base station was a Spectra model SP80 GNSS receiver with UHF radio and external antenna mounted on a separate tripod. The antenna height was 2.25 m. Ground control point measurements were converted to NAD83(2011) UTM zone 18N meters, NAVD88 (Geoid 12b) as the data were collected.
Process_Date: 201707
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Sandy Brosnahan
Contact_Organization: U.S. Geological Survey
Contact_Position: physical scientist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2265
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sbrosnahan@usgs.gov
Process_Step:
Process_Description:
The 57 targets and 251 transect measurements were exported from the data collectors as text file in the RW5 format and then processed (referenced to the base opus rapid static solution) and exported to comma-separated values (CSV) files using the Carlson Report Generator for a SurvCE RW5 Report (https://www.carlsonemea.com/cwa/report). The individual datasets were combined and manually edited to filter by transect point or ground control point and extraneous columns were removed. The target data are used as an input to the Agisoft Photoscan software to control the data horizontally and vertically. The 251 transect points collected within the study area are used to ground truth the processed data products (Point Cloud, DEM and Orthomosaic) created in Agisoft Photoscan.
Process_Date: 20170822
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Sandy Brosnahan
Contact_Organization: U.S. Geological Survey
Contact_Position: physical scientist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2265
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sbrosnahan@usgs.gov
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200810
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 308
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Universal Transverse Mercator
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -75.00000
Latitude_of_Projection_Origin: 0.000
False_Easting: 500000.0000
False_Northing: 0.0000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0001
Ordinate_Resolution: 0.0001
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983 (2011)
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222101
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988 (NAVD88)
Altitude_Resolution: 0.0001
Altitude_Distance_Units: meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Ground control points (targets) and transect point locations
Entity_Type_Definition:
target points and transect points collected using surveying techniques. These tables are used in post-processing to improve the quality of the positioning in the final photogrammetric products (ground control points) and in assessing the vertical accuracy of the final products (transects)
Entity_Type_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: NORTHING
Attribute_Definition: Northing coordinate in UTM Zone 18 meters, NAD83 (2011)
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4792244.349
Range_Domain_Maximum: 4793301.629
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: EASTING
Attribute_Definition: Easting coordinate in UTM Zone 18 meters, NAD83 (2011)
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 338811.0277
Range_Domain_Maximum: 342644.3948
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: ELEVATION
Attribute_Definition: Orthometric elevation relative to NAVD88 (geoid12a)
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 75.7273
Range_Domain_Maximum: 106.7299
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: ORIGINAL_ID
Attribute_Definition:
Target or transect identifier (name) provided by the surveyor to differentiate between targets and transects, to flag misidentified targets, and to make comments similar to field notes
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
character set used to identify target name and distinguish from transect
Attribute:
Attribute_Label: DATE_Collected
Attribute_Definition: Date of point collection in m/dd/yy format
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: character set to represent calendar date of collection
Attribute:
Attribute_Label: Description
Attribute_Definition:
simple descriptor used to distinguish between ground control points (TARGET) and transect points (TRANS)
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: character set
Overview_Description:
Entity_and_Attribute_Overview:
The text file 2017042FA_SodusBay_GCPs.csv lists the locations (coordinates in NAD83(2011) UTM zone 18N (EPSG::6347) for the horizontal, and NAVD88, GEOID 12b, for the vertical, meters) of all ground control points and transect points. The text contains one header record, and 308 data records with nine columns of comma-separated values.
Entity_and_Attribute_Detail_Citation: USGS Field Activity 2017-042-FA
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - ScienceBase
Contact_Address:
Address_Type: mailing and physical address
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov
Resource_Description:
This data release contains the CSV file 2017042FA_SodusBay_GCPs.csv, a browse graphic (2017042FA_SodusBay_GCPs_browse.jpg), and associated metadata 2017042FA_SodusBay_GCPs.xml
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: CSV
Format_Information_Content:
Comma-separated value (CSV) file 2017042FA_SodusBay_GCPs.csv and FGDC CSDGM metadata in XML format.
Transfer_Size: 0.017
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://www.sciencebase.gov/catalog/item/5b1ee15fe4b092d965254a5c
Network_Resource_Name:
https://www.sciencebase.gov/catalog/file/get/5b1ee15fe4b092d965254a5c
Network_Resource_Name: https://doi.org/10.5066/P9XQYCD0
Access_Instructions:
To download the data, it is recommended that you go to the page containing the data and take advantage of the large file handler. The first link is to the page containing the data. The second is a direct link to download all data available from the page as a zip file. And the final link is to the publication landing page.
Fees: none
Technical_Prerequisites:
The CSV file is plain text with comma separated values. It can be read with most text editors or spreadsheet programs.
Metadata_Reference_Information:
Metadata_Date: 20200810
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Sandra Brosnahan
Contact_Organization: U.S. Geological Survey
Contact_Position: Physical Scientist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2265
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: sbrosnahan@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P9XQYCD0/2017042FA_SodusBay_GCPs.html>
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