The integration of the DPR was successfully completed

The integration of the Dual-frequency Precipitation Radar (DPR) onto the Global Precipitation Measurement (GPM) Core Observatory was successfully completed in May 2012.

Two box- type instruments are DPR
Photograph No.1
Silver colored instrument on upper side is GMI made by NASA
Photograph No.2

This DPR is expected to be much more versatile than the TRMM precipitation radar (also provided by JAXA) and these two are the only radar instruments currently dedicated to precipitation measurements from space. The data obtained by the DPR along with that of the NASA GPM Microwave Imager (GMI), also flown on the Core Spacecraft, will be used as a calibration standard for rainfall estimation from the GPM constellation satellites. The GPM mission will enable global measurement of precipitation every three hours.