Dataset description: July 2021: Ground control point locations for UAS surveys of the beaches at Fort Stevens State Park, OR, and Cape Disappointment State Park, WA

This portion of the data release presents the locations of the temporary ground control points (GCPs) used for the structure-from-motion (SfM) processing of the imagery collected during the July 2021 unoccupied aerial system (UAS) surveys of the ocean beach at Fort Stevens State Park, OR, and Benson Beach at Cape Disappointment State Park, WA. Eighteen temporary ground control points (GCPs) were distributed throughout the survey area to establish survey control. The GCPs consisted of a combination of small square tarps with black-and-white cross patterns and "X" marks placed on the ground using temporary chalk. The GCP positions were measured using dual-frequency post-processed kinematic (PPK) GPS with corrections referenced to a static base station operating nearby. The GCP positions are presented in a comma-delimited text file.

Version	1
Keywords	topography, aerial photography, topographic maps, image mosaics, geomorphology, geospatial datasets, remote sensing
Data types	Photo
Format	comma-delimited text;
Amount	0.005 MB

Contacts

Contact	Joshua Logan PCMSC_data@usgs.gov

Report a problem

Location of materials and files

Public files	https://www.sciencebase.gov/catalog/item/62e47162d34e749ac04cb78a https://doi.org/10.5066/P9BVTVAW
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/ScienceBase/DR_P9BVTVAW/FortStevens_BensonBeach_2021-07_GCP_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2021-632-FA	Structure from Motion - UAS UAS mounted camera