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本文从原始雷达方程出发，提出了一种雷达加密观测方案和退卷积的数据反演方法，以实现雷达天线波束内的反射率不均匀结构信息的提取。反演方法的数值试验表明，此反演方法比常规测量方法在角分辨率方面提高约３倍，对波束内尺度为０．５８－２．０ＨＷ（ＨＷ是天线３ｄＢ波束宽度）的反射率变化有明显的反演能力。观测数据的测量误差对反演质量的影响也进行了计算和分析。本文还讨论了反演方法对雷达观测中的一些技术参数的要求。这些结果对于提高雷达尤其是星载微波主被动遥感器在测量降水量和云中含水量等参数中的精度有重要作用和现实意义。
Based on the original radar equation, this paper presents a radar encryption observation scheme and a deconvolution data inversion method to extract the uneven information of the reflectivity within the radar antenna beam. The numerical results of the inversion method show that the inversion method improves the angular resolution by about 3 times compared with the conventional method and the change of the reflectivity of the beam with the inner scale of 0.58-2.0HW (HW is the 3dB beamwidth of the antenna) Obvious inversion ability. The influence of measurement error of observation data on the quality of inversion is also calculated and analyzed. The paper also discusses the requirements of inversion methods for some technical parameters in radar observations. These results are of great importance and practical significance for improving the accuracy of radar, especially the satellite active-passive microwave remote sensing sensor in the measurement of precipitation and cloud moisture content parameters.