Kilpisjärvi Atmospheric Imaging Receiver Array — First results

The Kilpisjärvi Atmospheric Imaging Receiver Array (KAIRA) is a dual antenna array radio receiver based on LOFAR technology. The main purpose of the system is to function as a bi-static phased-array receiver for the EISCAT Tromsø VHF incoherent scatter radar, as well as to function as a wide band imaging riometer. Due to the wide frequency coverage, the system can also be used as a bi-static radar receiver for various nearby meteor- and MST-radars. Other examples of possible uses for the system include broad-band observations of solar radio emissions and ionospheric scintillation. In addition to a technical overview, we present the first results from this recently completed system. These include the first multi-beam bi-static incoherent scatter radar observation, as well as a broad-band riometer absorption measurement.