摘要
根据雷达气象方程和k-Z关系 ,导出了雷达反射率因子积分取样观测资料衰减订正的逐库算法、逐库近似算法及稳定性判据。虽然仍不能解决衰减订正问题中固有的“不稳定”特征 。
From radar meteorological equation and the relationship between radar reflectivity factor and attenuation coefficient, an algorithm named binbybin and its approximations and the over correction detecting criteria have been derived for attenuation correction to discrete radar observations. The algorithm has taken into account the spatially discrete, integrate sampling feature of radar observations and the criteria are determined by the coefficients in \%k-Z\% relationship and bin resolution. It is expected that the algorithm behaves as good as Hitschfeld Bordan approach when attenuation is weak and the approximations to the algorithm would be more efficient for computation than the iterative method. The criteria can be used to avoid efficiently the compntation overflow caused by unstable over correction even though the unstability feature inherent in attenuation correction can not be solved. It has been shown that high resolution of data bin is beneficial to improve the stability during correction computation.
出处
《高原气象》
CSCD
北大核心
2001年第1期1-5,共5页
Plateau Meteorology
基金
国家自然科学基金项目!(496 75 2 5 6 )资助
