Delaware Atlantic coast, 2020 - Aircraft Positions
Low altitude (300 meters above ground level (AGL)) digital aerial imagery were acquired on May 4 and 5, 2020, from a manned, fixed-wing aircraft using a Sony A7R 36 Megapixel digital camera, along with precise aircraft location Global Navigation Satellite System (GNSS) data. Data were collected in shore-parallel lines, flying at approximately 50 meters per second and capturing true color imagery at 1 Hertz, resulting in image footprints with approximately 75-80% endlap, 60-70% sidelap, and a ground sample distance (GSD) of 5.3 centimeters. The precise time of each image capture (flash event) was recorded, and the corresponding aircraft position was computed in post-processing from the aircraft navigation GNSS data; precise image positions can then be determined by accounting for the lever arm offsets between the aircraft GNSS antenna and the camera lens. Position data, provided as latitude/longitude/ellipsoid height, is referenced to the North American Datum of 1983 (NAD83(2011)).
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Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[
"010:12"
]
|
| contactPoint |
{
"fn": "Jenna A. Brown",
"@type": "vcard:Contact",
"hasEmail": "mailto:jenniferbrown@usgs.gov"
}
|
| description | Low altitude (300 meters above ground level (AGL)) digital aerial imagery were acquired on May 4 and 5, 2020, from a manned, fixed-wing aircraft using a Sony A7R 36 Megapixel digital camera, along with precise aircraft location Global Navigation Satellite System (GNSS) data. Data were collected in shore-parallel lines, flying at approximately 50 meters per second and capturing true color imagery at 1 Hertz, resulting in image footprints with approximately 75-80% endlap, 60-70% sidelap, and a ground sample distance (GSD) of 5.3 centimeters. The precise time of each image capture (flash event) was recorded, and the corresponding aircraft position was computed in post-processing from the aircraft navigation GNSS data; precise image positions can then be determined by accounting for the lever arm offsets between the aircraft GNSS antenna and the camera lens. Position data, provided as latitude/longitude/ellipsoid height, is referenced to the North American Datum of 1983 (NAD83(2011)). |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Digital Data",
"format": "XML",
"accessURL": "https://doi.org/10.5066/P9K23VGX",
"mediaType": "application/http",
"description": "Landing page for access to the data"
},
{
"@type": "dcat:Distribution",
"title": "Original Metadata",
"format": "XML",
"mediaType": "text/xml",
"description": "The metadata original format",
"downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.647e2d96d34eac007b55e390.xml"
}
]
|
| identifier | http://datainventory.doi.gov/id/dataset/USGS_647e2d96d34eac007b55e390 |
| keyword |
[
"CMHRP",
"Cape Henlopen",
"Cape Henlopen State Park",
"Coastal and Marine Hazards and Resources Program",
"Delaware",
"Delaware Seashore State Park",
"Structure-from-Motion",
"U.S. Geological Survey",
"USGS",
"USGS:647e2d96d34eac007b55e390",
"aerial photography",
"coastal processes",
"digital elevation models",
"earth sciences",
"geography",
"geomorphology",
"geoscientificInformation",
"geospatial datasets",
"image collections",
"imageryBaseMapsEarthCover",
"oceans",
"remote sensing",
"topographic maps",
"topography"
]
|
| modified | 2023-08-21T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
"@type": "org:Organization"
}
|
| spatial | -75.10397133, 38.42990248, -75.04882072, 38.80812983 |
| theme |
[
"geospatial"
]
|
| title | Delaware Atlantic coast, 2020 - Aircraft Positions |
