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The new generation of dualpolarized weather radar plays an important role in the monitoring and early warning of severe weather such as heavy rainall and typhoons. With the development of meteorological modernization and the increasing requirements for timeliness and refinement, the Sband new generation dualpolarization weather radar cannot fully meet the needs of rapid development of researches and the early warning of small and mediumscale weather systems. The spacetime resolution of meteorological radar plays an important role in detecting smallscale structures in strong convection. Improving the temporal and spatial resolution of weather radar is the key to refined detection technology. This paper focuses on the temporal and spatial resolution of the new generation weather radar and the antenna sweeping method so as to improve the weather radar pulse repetition frequency, signal processing and scanning methods, to improve the capability of a new generation dualpolarized weather radar to detect catastrophic weather such as small and mediumsized cyclones and tornadoes and to get more accurate observations with faster refinement of weather processes.