Ionospheric Research Instrument References Ionospheric Research Instrument instrument Ask Anything Homework Help Also known as: IRI Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: HAARPThe main instrument is the Ionospheric Research Instrument (IRI), an array of 180 radio antennas spread over an area of 0.13 square kilometer (33 acres). Read MoreThe main instrument is the Ionospheric Research Instrument (IRI), an array of 180 radio antennas spread over an area of 0.13 square kilometer (33 acres). Read More
