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Glossary

Term Definition
ADF Auxiliary Data File: auxiliary file used by a processor, e.g. an orbit file or a calibration file.
ADGS Auxiliary Data Gathering Service: the Copernicus service that provides the auxiliary data, through an AUXIP interface.
API key A secret token created with the API Key Manager, that carries the identity and the rights of a user, used to call the services. See User rights and API keys.
ARD Analysis Ready Data, e.g. the Sentinel-1 ARD processor.
Asset In STAC, a file of an item, with its location.
AUXIP AUXiliary data Interface delivery Point: OData interface to get the auxiliary data.
CADIP CADU Interface delivery Point: OData interface of the acquisition ground stations, to get the raw data acquired by the satellites, organised in sessions.
CADU Channel Access Data Unit: raw telemetry data downlinked by the satellites.
CDSE Copernicus Data Space Ecosystem: the platform that distributes the Copernicus data.
Collection In STAC, a group of items.
CPM Core Python Modules of EOPF, used by the processors.
CQL2 Common Query Language: the language of the STAC API filters.
CSC Copernicus Space Component: the space and ground segments of Copernicus.
Dask Python library for parallel computing, used to run the processors and the staging.
DEM Digital Elevation Model.
Deployment (Prefect) A flow made runnable on the platform workers, from the dashboard, an automation or another flow.
DPR Data PRocessor: the re-engineered Sentinel processors, developed by the EOPF project.
EDRS European Data Relay System.
EOPF Earth Observation Processing Framework: the ESA project that re-engineers the Sentinel processors in Python.
Flow (Prefect) A Python function decorated with @flow, that implements a workflow.
Item In STAC, a product described by its metadata, footprint and assets.
Keycloak The identity and access management solution of RS-Python.
Local mode Mode where RS-Python runs on a single computer with Docker Compose, for development purposes.
Cluster mode Nominal mode where RS-Python runs on a Kubernetes cluster.
LTA Long Term Archive.
NRT, NTC, STC Near Real Time, Non Time Critical and Short Time Critical timeliness of the products.
OData Open Data Protocol, used by the Copernicus stations.
OGC Open Geospatial Consortium, that publishes the OGC API standards.
OSAM Object Storage Access Manager: the service that manages the object storage accounts and rights of the users.
Owner The user that owns a catalog collection.
Payload file The file that describes a processor run: units, inputs, outputs, storage... See Task tables and payload file.
PRIP Production service Interface delivery Point: OData interface of the production services, to get the Level-0, Level-1 and Level-2 products.
RS-Python, RSPY Reference System Python: this project.
Session A CADIP acquisition session: the raw data received by a ground station during one pass of a satellite.
Staging Copy of products from an external data source into the RS-Python object storage and catalog.
STAC SpatioTemporal Asset Catalog: the specification used to describe all the data.
Task table The file delivered with a processor, that describes its processing units, pipelines, inputs, outputs and auxiliary data selection rules.
Work pool (Prefect) A group of Prefect workers that execute the flow runs.