Program research the ionosphere, the active high-frequency, known as harp (HAARP) is a research project that in the year 1993 to review and research about the layers of the ionosphere using radio waves ELF/ULF/VLF is established.

the facility jointly by the U.S. Air Force and. Navy, University of Alaska in Fairbanks, and close to 15 American university other department and used. The company is the maker of this facility, the company BAE Advanced Technologies.

This system is now a collection of antennas for includes 180 antenna tower aluminum height 50/23 km, formed as on Earth, the vast expanses of Area 23٬000 square meters, in Alaska, is installed. This antenna, the waves superiors, short ELF/ULF/VLF with a 3. the 6 MW ERP production and to the ionosphere, sending.