天气雷达反射率因子的实时衰减订正  

Real-Time Attenuation Correction for Weather Radar Reflectivity Factor

作　　者：赵恒轩[1] 陈钟荣[1] 周枫[1] 

机构地区：[1]南京气象学院,江苏南京210044

出　　处：《高原气象》2003年第4期365-370,共6页Plateau Meteorology

基　　金：国家自然科学基金项目(40275010)资助

摘　　要：基于当代天气雷达信号处理及其数据输出的特点,提出可供气象台站对天气雷达反射率因子进行实时衰减订正的基本订正算法和参考目标订正算法。通过数值仿真,比较了这两种算法的各自优缺点;还讨论了盲距衰减A(r0)和雷达系统误差ΔC对估算真实反射率因子的影响。Based on the method of signal processing and the format of output data which are adopted by modern weather radar, this paper presents two real\|time attenuation correction algorithms suitable for the attenuated radar reflectivity factor, which are, respectively, the basic correction algorithm and the reference target correction algorithm. And the strong and weak points of the algorithms are discussed by comparison between the simulation results produced by the two algorthms respectively. It is also described that the blind range attenuation A(r0) and the radar system error ΔC make an impact on the true reflectivity factor.

关 键 词：天气雷达 衰减系数 路径积分衰减 衰减订正算法 反射率因子估算 

分 类 号：TN959.4[电子电信—信号与信息处理]