气象2026，Vol.52Issue(6)：742-749,8.DOI:10.7519/j.issn.1000-0526.2026.022501
基于地物回波的天气雷达性能实时监测方法
Research on Weather Radar Performance Monitoring Method Based on Ground Clutter
摘要
Abstract
This paper proposes an online performance monitoring method for weather radars based on ground clutter characteristics to evaluate radar system status and enhance the stability and reliability of ob-servation data.The method identifies stable ground clutter regions by exploiting the spatiotemporal per-sistence of clutter and the high occurrence probability of strong echoes.An empirical cumulative distribu-tion function is then constructed,with the 98th percentile extracted as the monitoring indicator,and a rel-ative calibration bias metric introduced to quantitatively characterize system deviations.A case study with the Jingzhou Radar demonstrates that this method can effectively capture stable clutter features under vari-ous weather conditions,different ranges,and anomalous propagation scenarios.Further application of the method to multiple radars in Hubei Province verify its reliability in detecting system performance biases and data anomalies,confirming its feasibility for online monitoring of weather radar performance.Therefore,this method is a strong support for improving the long-term stability of radar observations.关键词
天气雷达/地物回波/相对定标/性能监测Key words
weather radar/ground clutter/relative calibration/performance monitoring分类
天文与地球科学引用本文复制引用
程昌玉,许海波,徐桂荣,何菊..基于地物回波的天气雷达性能实时监测方法[J].气象,2026,52(6):742-749,8.基金项目
湖北省自然科学基金气象创新发展联合基金项目(2023AFD107和2023AFD092)共同资助 （2023AFD107和2023AFD092）
