中文摘要：

为利用多普勒雷达的径向风速获得实际风场的信息，提出了一种由单多普勒雷达径向风场反演水平散度场的新方法。在二维平面内，以某个探测点为中心，建立一个分析面，在假设风场呈线性变化的前提下，直接由径向风速推导出此探测点的散度值。并对几种典型理想风场的散度场进行了反演试验，试验结果表明，反演的散度场与分析的散度场比较一致。并对反演场与分析场之间的差别进行了讨论。

英文摘要：

A new method of the retrieval of horizontal divergence field with a single Doppler radar radial velocity data is presented. In a two-dimensional plane, an analytic plane centered on a certain point is established. Under the precondition that the wind field is changed linearly, the divergence at this point could be derived from the radial velocity directly. The experiments about the divergence fields of several typical and ideal wind fields were also done to verify this method. The results showed that the retrieved divergence fields were consistent with the analytic fields comparatively. The differences between the retrieval fields and the analytic fields were also discussed.