ESA Data Ontology
type: ConceptScheme
type: Ontology

CASSIOPE
type: Concept
notation: CA

Magnetic Field/Electric Field Instruments
type: Concept

RRI
type: Concept
definition: The RRI (Radio Receiver Instrument) measures radio waves in the ULF and HF frequency range (up to 18 MHz).
in scheme: ESA Data Ontology

RRI
type: Concept