RFI environmental measurement and analysis of radio telescope arrays at Guizhou Normal University

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 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 radio frequency interference (RFI) in Huaxi Campus of Guizhou Normal University to analyze the electromagnetic environment signals effectively. The monitoring showed that RFIs 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 RFIs are significant at low (≤30°) and high (≥70°) elevation.