The High-frequency Active Auroral Research Program, or HAARP, is a scientific endeavor aimed at studying the properties and behavior of the ionosphere. Operation of the research facility was transferred from the United States Air Force to the University of Alaska Fairbanks on Aug. 11, 2015, allowing HAARP to continue with exploration of ionospheric phenomenology via a land-use cooperative research and development agreement.
HAARP is the world's most capable high-power, high-frequency transmitter for study of the ionosphere. The HAARP program is committed to developing a world-class ionospheric research facility consisting of:
The Ionospheric Research Instrument, a high power transmitter facility operating in the High Frequency range. The IRI can be used to temporarily excite a limited area of the ionosphere for scientific study.
A sophisticated suite of scientific or diagnostic instruments that can be used to observe the physical processes that occur in the excited region.