Title :
GPM microwave imager key performance and calibration results
Author :
Newell, David ; Draper, David ; Figgins, Don ; Berdanier, Barry ; Kubitschek, Michael ; Holshouser, David ; Sexton, Adam ; Krimchansky, Sergey ; Wentz, Frank ; Meissner, Thomas
Author_Institution :
Ball Aerosp. & Technol. Corp., Boulder, CO, USA
Abstract :
The Global Precipitation Measurement (GPM) Microwave Imager (GMI) instrument was launched onboard the GPM core spacecraft in February 2014. The instrument has exhibited highly stable operations through the duration of the calibration/validation period. This paper provides an overview of the GMI instrument and a report of early on-orbit commissioning activities. It discusses the on-orbit radiometric sensitivity and stability for each channel, hot load performance, noise diode stability and early indicators of absolute calibration performance.
Keywords :
atmospheric measuring apparatus; atmospheric precipitation; calibration; diodes; noise; radiometry; AD 2014 02; GMI instrument; GPM core spacecraft; GPM microwave imager calibration; GPM microwave imager key performance; Global Precipitation Measurement Microwave Imager instrument; absolute calibration performance early indicator; calibration-validation period duration; channel stability; early on-orbit commissioning activity; highly stable operation; hot load performance; noise diode stability; on-orbit radiometric sensitivity; Calibration; Extraterrestrial measurements; Instruments; Microwave radiometry; Noise; Space vehicles; Temperature measurement; calibration; microwave radiometry; precipitation;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2014 IEEE International
Conference_Location :
Quebec City, QC
DOI :
10.1109/IGARSS.2014.6947300
