The Global Precipitation Measurement (GPM) Dual-frequency Precipitation Radar (DPR) is a research area that focuses on the development and implementation of advanced radar technology to measure precipitation around the world. The DPR is a cutting-edge radar system that provides detailed measurements of both the horizontal and vertical distribution of precipitation particles, allowing for improved understanding of precipitation processes and more accurate rainfall estimates. Researchers in this field work to analyze and interpret the data collected by the DPR to enhance our knowledge of precipitation patterns, dynamics, and impacts on the environment. This research area plays a crucial role in advancing our understanding of precipitation and improving weather forecasting models.