Goddard Space Flight Center
The silver disc and drum (center) is the GPM Microwave Imager, and the large block on the base is the Dual-frequency Precipitation Radar. The tall golden antenna is the High Gain Antenna for communications.
The GPM Microwave Imager (GMI) successfully completed a walkout deployment, spin-up and functional and interface testing after being integrated onto the core spacecraft in May, 2012. These series of tests confirmed electrical and functional performance of the GMI with the GPM Core Observatory.
The High Gain Antenna System onboard the GPM Core Observatory was successfully deployed and functionally tested after being integrated onto the spacecraft late last year. The HGAS is responsible for relaying data collected by the satellite’s instruments to Tracking and Data Relay Satellite System (TDRS) satellites. Data is sent back to Goddard Space Flight Center via a NASA wide-area network.