Crosswalk: STAC (PDSSP profile) → EPN-TAP 2.0

Mapping set version 0.1.0 · executed by pdssp_ontology.convert

Downloads: fields.sssom.tsv · product-type.sssom.tsv (SSSOM)

STAC field	Match	EPN-TAP column	Transform	OMS concept	Comment
`id`	exactMatch	`granule_uid`	`identity`	observationIdentifier
`id`	closeMatch	`obs_id`	`identity`	observationIdentifier	One granule per observation today; revisit when several levels of one observation are catalogued.
`collection`	exactMatch	`granule_gid`	`identity`	sosa:isMemberOf
`ssys:targets`	exactMatch	`target_name`	`join_hash`	sosa:hasUltimateFeatureOfInterest	EPN-TAP multi-values are hash-separated.
`ssys:target_class`	exactMatch	`target_class`	`epn_term:target-class`	featureOfInterestType	ssys values are EPN target-class term ids; checked against the PADC vocabulary.
`start_datetime`	exactMatch	`time_min`	`iso_to_jd`	sosa:phenomenonTime
`end_datetime`	exactMatch	`time_max`	`iso_to_jd`	sosa:phenomenonTime
`bbox`	closeMatch	`c1min`	`bbox_lon_min`	sosa:hasFeatureOfInterest	Body frame: planetocentric east longitude in 0-360.
`bbox`	closeMatch	`c1max`	`bbox_lon_max`	sosa:hasFeatureOfInterest
`bbox`	closeMatch	`c2min`	`bbox_lat_min`	sosa:hasFeatureOfInterest
`bbox`	closeMatch	`c2max`	`bbox_lat_max`	sosa:hasFeatureOfInterest
`geometry`	closeMatch	`s_region`	`geojson_to_dali_polygon`	sosa:hasFeatureOfInterest	DALI polygon, east longitudes; check with STILTS taplint.
`proj:wkt2`	closeMatch	`spatial_frame_type`	`const:body`	spatialReference	A projected planetary footprint is body-fixed; no projection means no footprint.
`proj:code`	closeMatch	`spatial_frame_type`	`const:body`	spatialReference	An IAU planetary CRS is body-fixed.
`platform`	exactMatch	`instrument_host_name`	`identity`	sosa-oms:madeOnPlatform
`instruments`	exactMatch	`instrument_name`	`join_hash`	sosa:madeBySensor
`product:type`	closeMatch	`dataproduct_type`	`value_map:product-type`	sosa-oms:observationType	Value mapping in product-type.sssom.tsv.
`processing:level`	closeMatch	`processing_level`	`thesaurus_property:epntapLevel`	sosa:usedProcedure	PDSSP Raw is CODMAC Edited (2): close, not exact.
`ssys:incidence_angle`	exactMatch	`incidence_min`	`identity`	sosa-oms:parameter
`ssys:incidence_angle`	exactMatch	`incidence_max`	`identity`	sosa-oms:parameter
`ssys:emission_angle`	exactMatch	`emergence_min`	`identity`	sosa-oms:parameter
`ssys:emission_angle`	exactMatch	`emergence_max`	`identity`	sosa-oms:parameter
`ssys:phase_angle`	exactMatch	`phase_min`	`identity`	sosa-oms:parameter
`ssys:phase_angle`	exactMatch	`phase_max`	`identity`	sosa-oms:parameter
`ssys:solar_longitude`	exactMatch	`solar_longitude_min`	`identity`	sosa-oms:parameter
`ssys:solar_longitude`	exactMatch	`solar_longitude_max`	`identity`	sosa-oms:parameter
`created`	closeMatch	`creation_date`	`identity`	sosa-oms:metadata	STAC created is the metadata record date.
`updated`	closeMatch	`modification_date`	`identity`	sosa-oms:metadata
`created`	closeMatch	`release_date`	`identity`	sosa-oms:metadata	No release date in STAC: public as soon as catalogued.
`assets[role=data].href`	exactMatch	`access_url`	`identity`	sosa:hasResult
`assets[role=data].type`	exactMatch	`access_format`	`identity`	sosa:hasResult
`assets[role=thumbnail].href`	exactMatch	`thumbnail_url`	`identity`	sosa:hasResult
`sci:doi`	closeMatch	`bib_reference`	`identity`	citation

Loss report

STAC fields with no EPN-TAP column (dropped on export):

mission: No EPNcore column for the mission: instrument_host_name carries the platform.
pdssp:method: No EPNcore column for the acquisition technique: lost on export.
assets[role=data].bands: Band names have no EPNcore column; spectral_range_* is to be computed from eo:center_wavelength and eo:full_width_half_max (not done yet).
pdssp:wavelength_type: No EPNcore column for the spectral domain; spectral_range_* carries the numbers.
version: No EPNcore column for the product version: lost on export.

Mandatory EPN-TAP columns with no STAC source (exported as null):

c1_resol_max, c1_resol_min, c2_resol_max, c2_resol_min, c3_resol_max, c3_resol_min, c3max, c3min, measurement_type, spectral_range_max, spectral_range_min, spectral_resolution_max, spectral_resolution_min, spectral_sampling_step_max, spectral_sampling_step_min, time_exp_max, time_exp_min, time_sampling_step_max, time_sampling_step_min