RFI Prediction for QTT Restricted Area

The construction of Radio Quiet Zones (RQZ) is an important guarantee of the radio telescope. According to the local conditions, Qi Tai radio Telescope (QTT) established a protection area with a radius of 30 km, including core area, restricted area and coordination area. The paper focus on the potential RFI sources in the restricted area, such as the villages, mobile communication stations and 35 kV power supply engineering. A simulation method based on topographical radio wave propagation was established to predict the influence of the main interference sources on the QTT. Then we have proposed some mitigated plans for the villages affected observations, mobile communication stations and critical points of 35 kV power supply engineering. Therefore, RFI in restricted area effectively can be mitigated effectively.