As the most sensitive single-dish radio telescope, the Five-hundred Aperture Spherical radio Telescope (FAST) is very susceptive to radio frequency interference (RFI) from active radio services. Moreover, due to the rapid development of space applications and research, satellite interference has become one of the main RFI sources for FAST, particularly at the L band. Therefore, we have developed several measures to mitigate satellite RFI. On the one hand, an antenna with 4.5-meter diameter has been constructed and installed at the FAST site to detect the satellite interference in the frequency band between 1 to 5 GHz. Meanwhile, we have developed a satellite RFI database based on the FAST sky coverage, the observing frequency bands, and known satellite systems. By combining the satellite RFI monitoring antenna and the database, we have established a satellite RFI mitigation system. With this system, we can not only track satellites to collect their characteristics and update the database but also help the observer to program the observing plan by predicting satellite interference. During the practical observation of FAST at the L band, the feasibility of this system to mitigate satellite RFI has been proved. In particular, the system effectively avoids strong satellite interference from entering the main beam of the telescope and causing receiver saturation.

作为最敏感的单碟射电望远镜，五百球形球形射电望远镜（FAST）非常容易受到有源无线电服务的射频干扰（RFI）的影响。此外，由于空间应用和研究的迅速发展，卫星干扰已成为FAST的主要RFI源之一，尤其是在L频段。因此，我们已经制定了减轻卫星RFI的几种措施。一方面，已经在FAST站点上建造并安装了直径为4.5米的天线，以检测1至5 GHz频带内的卫星干扰。同时，我们基于FAST天空覆盖范围，观测频段和已知卫星系统开发了一个卫星RFI数据库。通过结合卫星RFI监视天线和数据库，我们已经建立了卫星RFI缓解系统。借助该系统，我们不仅可以跟踪卫星以收集其特征并更新数据库，还可以通过预测卫星干扰来帮助观察者编程观测计划。在L波段的FAST的实际观察期间，已证明了该系统减轻卫星RFI的可行性。特别是，该系统有效地避免了强烈的卫星干扰进入望远镜的主光束并导致接收器饱和。已经证明了该系统减轻卫星RFI的可行性。特别地，该系统有效地避免了强烈的卫星干扰进入望远镜的主光束并导致接收器饱和。已经证明了该系统减轻卫星RFI的可行性。特别地，该系统有效地避免了强烈的卫星干扰进入望远镜的主光束并导致接收器饱和。