Modified Hitschfeld-Bordan Equations for Attenuation-Corrected Radar Rain Reflectivity: Application to Nonuniform Beamfilling at Off-Nadir Incidence
Modified Hitschfeld-Bordan Equations for Attenuation-Corrected Radar Rain Reflectivity: Application to Nonuniform Beamfilling at Off-Nadir Incidence
复制标题
衰减校正雷达雨反射率的修正 Hitschfeld-Bordan 方程：在非最低点入射处非均匀波束填充的应用
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
L. Liao
中科院分区：
文献类型：
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作者：
R. Meneghini;L. Liao
摘要如 Takahashi 等人所示，机载或星载气象雷达视场内的多路径衰减估计对于偏离最低点的入射角是可行的。这是因为提供路径衰减估计的表面参考技术可以应用于与表面相交的每个雷达距离门。本研究基于这一结果，表明衰减校正雷达反射率因子的三个修改后的 Hitschfeld-Bordan 估计可以推广到多路径衰减估计可用的情况，从而对非均匀波束填充的影响进行校正。一个简单的模拟显示了该方法的一些优点和缺点。
AbstractAs shown by Takahashi et al., multiple path attenuation estimates over the field of view of an airborne or spaceborne weather radar are feasible for off-nadir incidence angles. This follows from the fact that the surface reference technique, which provides path attenuation estimates, can be applied to each radar range gate that intersects the surface. This study builds on this result by showing that three of the modified Hitschfeld–Bordan estimates for the attenuation-corrected radar reflectivity factor can be generalized to the case where multiple path attenuation estimates are available, thereby providing a correction to the effects of nonuniform beamfilling. A simple simulation is presented showing some strengths and weaknesses of the approach.