SMAP L-Band Microwave Radiometer: Instrument Design and First Year on Orbit. - Piepmeier, Jeffrey R.; Focardi, Paolo; Horgan, Kevin A.; Knuble, Joseph J.; Ehsan, Negar; Lucey, Jared F.; Brambora, Clifford; Brown, Paula R.; Hoffman, Pamela J.; French, Richard T.; Mikhaylov, Rebecca L.; Kwack, Eug-Yun; et al. (IEEE Trans. Geosci. Remote. Sens., 2017)

The planned Soil Moisture Active Passive (SMAP) mission L-band radar/radiometer instrument. - Spencer, Michael W.; Wheeler, Kevin B.; Chan, Samuel F.; Piepmeier, Jeffrey; Hudson, Derek; Medeiros, James (2011)

The Soil Moisture Active Passive (SMAP) mission L-Band radar/radiometer instrument. - Spencer, Michael W.; Wheeler, Kevin B.; White, Chris; West, Richard D.; Piepmeier, Jeffrey; Hudson, Derek; Medeiros, James (2010)