Dataset description: Ground control point locations for UAS survey

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 Unmanned Aerial System (UAS) survey on of the Liberty Island Conservation Bank Wildlands restoration site in the Sacramento-San Joaquin Delta on 2018-10-23. The GCPs were used to establish ground control for the survey and consisted of 24 small (80 x 80 centimeter) square tarps with black-and-white cross patterns placed on the ground surface throughout the mapping area during the survey. The GCP positions were measured using RTK GPS, with corrections from a GPS base station located approximately 3 kilometers south of the study area. 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
Format	comma-delimited text
Amount	0.732 MB

Contacts

Contact	Joshua Logan PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://www.sciencebase.gov/catalog/file/get/5f24b3e582cef313ed979696?name=Wildlands_2018-10-23_GCP.csv https://www.sciencebase.gov/catalog/item/5f24b3e582cef313ed979696 https://doi.org/10.5066/P9GF8R1M
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/ScienceBase/DR_P9GF8R1M/Wildlands_2018-10-23_GCP_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2018-676-FA	Structure from Motion - UAS UAS mounted camera