Prediction Method For Electromagnetic Interference Of Communication Base Station To Radio Telescope

Radio telescopes have extremely high sensitivity and wide operating frequency range. When performing observation tasks, they will not only receive the signals generated by the observed targets, but also receive electromagnetic interference signals inside and outside the radio telescope site. These interference signals, especially the interference from communication base stations, will affect the accuracy of the observation. In order to predict the electromagnetic interference of the communication base station to the radio telescope, an electromagnetic interference prediction method based on relative terrain is proposed. This method converts the terrain elevation data into relative terrain data, taking the relative height of terrain as the criterion, and calculates the path loss of the communication base station to the radio telescope by using Deygout model. Then, combined with the parameters of the base station antenna, the interference power of the communication base station to the radio telescope is obtained. This paper focuses on the analytical process of the proposed method, which provides a good foundation for developing the electromagnetic interference prediction software of radio telescope.