Abstract:
Recently, because of increasing human activities, the space electromagnetic environment has become more and more complex, and the radio interference sources have proliferated, which is increasingly affecting the radio astronomical observations. In order to obtain the spatial distribution of radio frequency interference (RFI) and its sources in the observable sky area of the radio telescope array at Guizhou Normal University, and to help us clean the RFI in the observation and data processing. This paper describes the use of radio telescope array grid-point measurements of RFI in Huaxi Campus of Guizhou Normal University to analyze the electromagnetic environment signals effectively. The monitoring showed that RFI at 1 150 MHz, 1 176.45 MHz, 1 202.025 MHz, 1 207.14 MHz, 1 227.6 MHz, 1 250 MHz, 1 268.52 MHz, and 1 469 MHz had even distribution. Multiple RFI are significant at low (≤30°) and high (≥70°) elevation.