Problem
Research questions and friction points this paper is trying to address.
Earth observation
instrument registry
metadata
data discovery
standardization
Towards an open registry of Earth observation instruments
🤖 AI Summary
The rapid proliferation of Earth observation instruments has been hindered by the absence of a unified, reliable, and persistent source of metadata, impeding data discovery and interpretation. To address this challenge, this work proposes and implements the first open-source registry for Earth observation instruments—Awesome Earth Observation Instruments. The registry employs a lightweight core schema extensible through modular components to capture multidimensional instrument characteristics, including spectral, geometric, and data access properties. It integrates automated validation with human curation to ensure metadata quality. Hosted on GitHub, the registry leverages version control for continuous evolution and is designed for future API interoperability. This infrastructure substantially enhances the discoverability, interpretability, and analyzability of instrument metadata, thereby supporting more effective utilization of Earth observation data.
📝 Abstract
Earth observation (EO) is essential to understanding the Earth system, enabling the transformation of planetary properties into measurable variables that can be analysed, compared, and modelled. In recent decades, EO capabilities have grown rapidly, accompanied by an even faster expansion in the number and variety of available EO instruments. Today, EO includes instruments deployed on satellites, airborne platforms, and terrestrial or in-situ systems. However, despite this proliferation of instruments, users often lack a single, reliable source describing their existence and key characteristics. Although existing data catalogues have substantially improved dataset discovery, they primarily describe data products rather than providing persistent, curated metadata about the instruments that produced them. Here we present Awesome Earth Observation Instruments, an open, standardized, and community-oriented registry providing machine-readable metadata for EO instruments. The catalogue is hosted on GitHub and allows contributors to submit instrument metadata following a common schema. The schema combines a lightweight core with modular extensions covering spectral, geometric, and data access-related metadata, enabling both standardization and flexibility across diverse EO systems. All submissions undergo automated schema validation and human review. Because the schema is open, versioned, and extensible, the catalogue can continuously evolve as new instruments and metadata requirements emerge. This facilitates the discovery, interpretation, and analysis of EO data in light of instrument characteristics. To support programmatic access and interoperability, we further envisage an API for integration within common EO analysis environments. The catalogue is openly available at https://github.com/awesome-spectral-indices/awesome-earth-observation-instruments.
Innovation
Methods, ideas, or system contributions that make the work stand out.
instrument registry
machine-readable metadata
modular schema
community-driven curation
Earth observation interoperability
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