Table 1 Key metadata categories and example descriptors for a comprehensive FAIR-aligned UAV metadata framework, designed to support varying levels of detail and accommodate passive optical and other sensor types. Mappings (Crosswalk / References) to selected existing standards and ontologies (ISO 19115-1/-2, CDIF, PROV-O) are provided to ensure interoperability and facilitate future alignment with community and institutional metadata frameworks.
From: Towards a FAIR metadata framework for drone and uncrewed aerial vehicle data
FAIR-aligned UAV Metadata Framework | |||||
|---|---|---|---|---|---|
Descriptive and Administrative | |||||
Category | Keywords | Crosswalk / References | |||
Context Information | Title, Version, Authors, Contact Information, Organization, Description | ISO 19115-1: CI_Citation, CI_Responsibility, MD_DataIdentification.abstract; CDIF: citation; PROV-O: prov:Agent | |||
Access & Licensing | Access Level (Open, Embargoed, Restricted, Metadata-Only), License | ISO 19115-1: MD_SecurityConstraints, MD_Constraints.useLimitations; CDIF: accessRights; PROV-O: prov:Activity (usage constraints) | |||
Classification | Keywords, Language | ISO 19115-1: MD_Keywords, PT_Locale; CDIF: keywords | |||
Publishing & Funding | Publisher, Funding, Related Project | ISO 19115-1: CI_Citation; CDIF: funding; PROV-O: prov:Entity (funding source) | |||
Linked Resources | Resource Title, Resource DOI, References, Data Link, Derived From, Same As | ISO 19115-2: LI_Lineage, Documentation: CI_Citation; CDIF: relatedResource; PROV-O: prov:wasDerivedFrom / prov:alternateOf | |||
Spatio-Temporal Summary | Year, Location | ISO 19115-1: EX_Extent (includes both geographic and temporal extent); CDIF: spatialCoverage, temporalCoverage | |||
Format & Structure | Formats of Data (TIFF, GeoTIFF, LAS, etc.) | ISO 19115-1: MD_Format; CDIF: format | |||
Scope of Dataset | |||||
Category | Keywords | Crosswalk / References | |||
Spatial Characteristics | Spatial Coverage (bounding box), Spatial Resolution (e.g., pixel size) | ISO 19115-1: EX_GeographicBoundingBox / EX_Extent,MD_Resolution.levelOfDetail; CDIF: spatialCoverage | |||
Temporal Characteristics | Time Coverage, Temporal Resolution (flight frequency) | ISO 19115-1: EX_TemporalExtent; CDIF: temporalCoverage | |||
Platform, Instrument & Sensor | UAV Type, UAV Brand/Version, Sensor Details, Spectra Recorded | ISO 19115-2: MI_Platform, MI_Instrument, MI_Sensor, MI_Plan; CDIF: instrument; PROV-O: prov:Entity | |||
Data Processing Levels | |||||
Level | Description | Keywords | Format Examples | Crosswalk / References | |
Level 0 | Raw Data | Raw imagery, unprocessed point clouds, sensor logs | JPEG, PNG, TIFF, RAW, LAS, LAZ, CSV, TXT | ISO 19115-2: LI_ProcessStep; PROV-O: prov:Activity | |
Level 1 | Basic Calibrated Data | Radiometrically calibrated imagery, calibrated point clouds, reflectance data | TIFF (calibrated), GeoTIFF, LAS (calibrated), LAZ | ISO 19115-2: Lineage.LI_ProcessStep; PROV-O: prov:Activity | |
Level 2 | Georeferenced & Mosaicked Data | Orthomosaic, georeferenced image layers, terrain products, DSM, DTM from a single mission | GeoTIFF, TIFF, ASC, IMG | ISO 19115-2: Lineage.LI_ProcessStep; PROV-O: prov:Activity | |
Level 3 | Processed & Analyzed Data | Vegetation indices (e.g., NDVI), classified maps, multi-mission terrain models, land cover maps, site-wide DEM/DSM | GeoTIFF, TIFF, SHP | ISO 19115-2: Lineage.LI_ProcessStep; PROV-O: prov:Activity | |
Level 4 | Synthesized Data & Models | Predictive models, 3D surface reconstructions, crop yield estimates, simulations, | OBJ, FBX, GeoTIFF | ISO 19115-2: Lineage.LE_ProcessStep; PROV-O: prov:Activity | |
