New Photonics-based Interference Mitigation Filters for Radioastronomy

本项目旨在研究射电天文学中基于光子的干扰抑制滤波器的新拓扑结构。它的意义在于，它将首次解决从相控阵天线传输射电天文信号的光纤传输系统中去除射频干扰信号的问题。这些干扰抑制器是从共存的地面发射机和卫星中去除不需要的强人造信号的关键因素，并使非常微弱的射电天文信号的探测变得极其困难。结果将是与信号传输系统集成的新型高分辨率可调谐光纤干扰抑制滤波器，从而提高射电天文相控阵的灵敏度。

This project aims to study new topologies for photonics-based interference mitigation filters for radioastronomy. Its significance is that it will solve, for the first time, the problem of excising RF interfering signals from within the optical signal fibre transport systems conveying radioastronomy signals from phased array antennas. These interference suppressors are key elements in removing strong unwanted man-made signals from terrestrial transmitters and satellites that coexist, and make the detection of the very weak radioastronomy signals extremely difficult. The outcome will be new high-resolution and tunable fibre-based interference suppression filters integrable with the signal transport system, which enhance the sensitivity of radioastronomy phased arrays.