Derek Hudson
Goddard Space Flight Center
11 Papers
21 Citations
Derek Hudson is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: Radiometer & Microwave radiometer. The author has an hindex of 5, co-authored 11 publications.
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Papers
SMAP L-Band Microwave Radiometer: Instrument Design and First Year on Orbit
Jeffrey R. Piepmeier,Paolo Focardi,Kevin Horgan,Joseph Knuble,Negar Ehsan,Jared Lucey,C. Brambora,Paula R. Brown,Pamela Hoffman,Richard French,Rebecca Mikhaylov,Eug-Yun Kwack,Eric M. Slimko,Douglas Dawson,Derek Hudson,Jinzheng Peng,Priscilla N. Mohammed,Giovanni De Amici,Adam P. Freedman,James Medeiros,Fred Sacks,Robert H. Estep,Michael W. Spencer,Curtis W. Chen,K. Wheeler,W. Edelstein,Peggy O'Neill,Eni G. Njoku +27 more
TL;DR: The SMAP radiometer electronics are thermally controlled to achieve good radiometric stability, and analyses of on-orbit results indicate that the electrical and thermal characteristics of the electronics and internal calibration sources are very stable and promote excellent gain stability.
Radio-Frequency Interference Mitigation for the Soil Moisture Active Passive Microwave Radiometer
Jeffrey R. Piepmeier,Joel T. Johnson,Priscilla N. Mohammed,Damon Bradley,Christopher S. Ruf,Mustafa Aksoy,Rafael Garcia,Derek Hudson,Lynn Miles,Mark Wong +9 more
TL;DR: The Soil Moisture Active Passive radiometer operates in the L-band protected spectrum that is known to be vulnerable to radio-frequency interference, and takes a multidomain approach to RFI mitigation by utilizing an innovative onboard digital detector back end with digital signal processing algorithms.
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Soil Moisture Active/Passive L-Band Microwave Radiometer Postlaunch Calibration
Jinzheng Peng,Sidharth Misra,Jeffrey R. Piepmeier,Emmanuel P. Dinnat,Derek Hudson,David M. Le Vine,Giovanni De Amici,Priscilla N. Mohammed,Rajat Bindlish,Simon Yueh,Thomas Meissner,Thomas J. Jackson +11 more
TL;DR: Results show that the current radiometer L1B data product (version 3) satisfies its requirements although there are biases in TA over cold sky and in TB comparing with the Soil Moisture and Ocean Salinity TB v620 data products.
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Soil Moisture Active/Passive (SMAP) L-Band Microwave Radiometer Post-Launch Calibration Upgrade
Jinzheng Peng,Sidharth Misra,Jeffrey R. Piepmeier,Emmanuel P. Dinnat,Simon Yueh,Thomas Meissner,David M. Le Vine,K. Shelton,Adam P. Freedman,R. Scott Dunbar,S. Chan,Rajat Bindlish,Giovanni De Amici,Priscilla N. Mohammed,Liang Hong,Derek Hudson,Thomas J. Jackson +16 more
TL;DR: In this paper, the Soil Moisture Active/Passive (SMAP) microwave radiometer has been undergoing further calibration and validation with the goal of reducing both the bias in the cold-sky measurements and calibration drift in the global ocean measurements experienced during eclipse seasons in data product version 3.
The planned Soil Moisture Active Passive (SMAP) mission L-band radar/radiometer instrument
Michael W. Spencer,K. Wheeler,Christopher White,Richard West,Jeffrey R. Piepmeier,Derek Hudson,James Medeiros +6 more
- 25 Jul 2010
TL;DR: The Soil Moisture Active/Passive mission is a NASA mission identified by the NRC “decadal survey” to measure both soil moisture and freeze/thaw state from space to achieve a wide swath at sufficiently high resolution for both active and passive channels.
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