Global rainfall is the primary distributor of latent heat through atmospheric circulation.
The recently launched Tropical Rainfall Measuring Mission satellite is dedicated to advance our understanding of tropical precipitation patterns and their implications on global climate and its change. However, due to the limited mission lifetime and the dynamical nature of precipitation, the TRMM PR data acquired cannot address all the issues associated with precipitation, its related processes, and the long-term climate variability. Most of them require a PR type radar with enhanced capabilities. Digital chirp generation and the corresponding on-board pulse compression scheme. Radar electronics and algorithm to adaptively scan the antenna so that more time can be spent to observe rain rather than clear air.