In order to achieve the information parameters of weather targets and presenting more accurate information for analyzing turbulence and other weather changing process as well as providing excellent means for high quality weather analysis, this paper analyses and simulates the DBF techniques, clutter suppression and ambiguity resolution in frequency domain, discusses the superiority of application of DBF technique to weather radar, presents a scheme of implementing the ground clutter suppression and ensuring parameter estimation quality of weather targets by using the frequency domain interpolation skills, based on the problem that the applications of IIR filter and pulse pair processing (PPP) are limited by echo signals hop resulting from wave position changing due to waveforms electronic scanning, and finally, gives an engineering design scheme of signal processing system for weather radar.% 为了获得气象目标信息参数、为分析湍流等天气过程演变提供更精细的信息、为高质量气象分析提供更好的手段，结合研制的某X波段数字阵列天气雷达，对数字波束形成(DBF)技术、杂波抑制和频域解模糊等问题进行了分析和仿真；探讨了DBF技术在天气雷达中的应用优势，对因波束电扫描使波位变化导致回波信号跳跃而限制IIR滤波器和脉冲对处理(PPP)应用的问题，提出采用频域插补技术来实现地物杂波抑制和保证气象目标参数估计的质量。最后，给出了天气雷达信号处理系统工程设计方案。
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