All-sky interferometric riometry

作者：McKay Derek^*; Fallows Richard; Norden Menno; Aikio Anita; Vierinen Juha; Honary Farideh; Marple Steve; Ulich Thomas

来源：Radio Science, 2015, 50(10): 1050-1061.

DOI：10.1002/2015RS005709

The first implementation of a Fourier-based interferometric riometry technique for measuring electron density induced ionospheric opacity at VHF radio frequencies is presented. Unlike multibeam riometers, which form discrete beams on the sky, the interferometric technique permits all-sky sampling of incoming cosmic radio noise emissions resulting in a spatially continuous radiogram of the entire sky. The map of the received power at each time may then be compared to the equivalent map from a "quiet day," allowing the morphology of ionospheric absorption of cosmic radio noise to be ascertained. In this work, the high-latitude Kilpisjarvi Atmospheric Imaging Receiver Array was used to carry out the first interferometric riometry measurements in late 2013, producing all-sky absorption maps of space-weather-related ionization in the D region.

• 出版日期2015-10
• 单位MIT