天文学进展2025，Vol.43Issue(1)：81-99,19.DOI:10.3969/j.issn.1000-8349.2025.01.05
低频射电干涉阵成像中的电离层效应仿真和校准方法研究进展
Research Progresses on Ionospheric Effect Simulation and Calibration Methods in Low-frequency Radio Interferometric Imaging
摘要
Abstract
High-precision calibration of ionospheric effect is not only the key for EoR signal detection,but also the key problem for all low-frequency radio interferometer(usually less than 300 MHz).It is necessary to study the characteristics of the ionosphere,the influence on radio interferometer array and calibration methods.In this paper,we first analyze the ionosphere-induced phase errors on the baseline and the source positional offsets on the image domain.The existing ionospheric monitoring data,prediction models,and current ionospheric simulation and calibration techniques are systematically investigated.The in-depth investigation of the ionospheric effect will provide basic support for the data simulation and calibration in the field of low-frequency radio interferometric imaging.关键词
射电干涉阵/电离层效应/仿真/校准Key words
radio interferometer array/ionospheric effect/simulation/calibration分类
天文学引用本文复制引用
刘毅鸿,梅盈,邓辉,王锋..低频射电干涉阵成像中的电离层效应仿真和校准方法研究进展[J].天文学进展,2025,43(1):81-99,19.基金项目
科技部SKA专项(2020SKA011030) （2020SKA011030）
国家自然科学基金(12373097) （12373097）
市校联合资助基础研究项(2023A03J0016) （2023A03J0016）
广东省基础与应用基础研究基金项目(2024A1515011503) （2024A1515011503）
