PFISR
Phased Array Radar in Poker Flat, Alaska

The Poker Flat Incoherent Scatter Radar (PFISR) is located at the Poker Flat Research Range near Fairbanks, Alaska. It is a two-dimensional phased array radar consisting of 4096 transmitting and receiving elements. PFISR was built by SRI International on behalf of the National Science Foundation to conduct studies of the upper atmosphere and ionosphere in the auroral zone.