WGISS Connected Data Assets
Guidance to Enable Discoverability of CEOS-ARD Datasets

Publication Date: 2026-XX-XX
Editors: WGISS DAIG



Introduction#

Purpose of the document#

This document describes Best Practices for the encoding of metadata for CEOS-ARD Collections to facilitate their discovery through the CEOS Connected Data Assets.

The proposed Best Practices are based on proven approaches used by other communities for expressing conformance with data specifications as part of Quality metadata:

  • INSPIRE: to express partial or conformance with respect to the INSPIRE Data Specifications [1], e.g. “Land cover”, “Orthoimagery” etc.

  • DGIWG: to express partial or conformance with respect to its Data Product Specifications [2] (DPS), e.g. “Defence Gridded Elevation Data Product” (DGED), “Defence Orthoimagery Product” (DOP) or “Elevation Surface Mode” (ESM).

The document does not impose a particular metadata standard, but aims to provide guidance on how to apply the best practices to a number of widely used metadata standards.

The Best Practices are currently limited to Collection metadata and do not cover the encoding of metadata for CEOS-ARD Granules or Items.

Terms, definitions and abbreviated terms#

Terms and definitions#

The following acronyms are used in addition to the acronyms defined in the CEOS EO Glossary.

CEOS-ARD self-assessment#

Product assessed as meeting CEOS-ARD requirements by the organisation responsible for production and distribution of the product.

CEOS-ARD peer review#

Peer review by the CEOS Working Group on Calibration and Validation of the organisation’s product self-assessment.

Acronyms#

The following acronyms are used in addition to the acronyms defined in the CEOS EO Glossary.

Acronym

Definition

ARD

Analysis Ready Data

CDA

Connected Data Assets

DGIWG

Defence Geospatial Information Working Group

DPS

(DGIWG) Data Product Specifications

INSPIRE

Infrastructure for Spatial Information in Europe

PFS

Product Family Specification