Paper Info
Title
Soil Moisture Active/Passive (SMAP) L-Band Microwave Radiometer Post-Launch Calibration Upgrade
Abstract
The Soil Moisture Active/Passive (SMAP) microwave radiometer is a fully polarimetric L-band radiometer flown on the SMAP satellite in a 6 AM/6 PM sun-synchronous orbit at 685 km altitude. After the SMAP L1B_TB data product version 3 was released in 2016, the 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 post-launch calibration algorithm has been upgraded by using new estimates of the reflector emissivity as well as using multiple scenes to calibrate the radiometer internal reference sources and antenna gain simultaneously. In addition, a correction offset is applied to the ocean roughness model for horizontal polarization based on nadir observations. Test and validation results show that the goal is achieved (e.g., biases are removed and the calibration stability achieved for data release version 4 is 0.1 K (rms) over both the global ocean and CS).
Year
DOI
Venue
2019
10.1109/JSTARS.2019.2902492
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Keywords
DocType
Volume
Calibration,Microwave radiometry,Ocean temperature,Radomes,Temperature measurement
Journal
12
Issue
ISSN
Citations 
6
1939-1404
0
PageRank 
References 
Authors
0.34
0
17
Name
Order
Citations
PageRank
Jinzheng Peng1207.02
Sidharth Misra220924.38
Jeffrey Piepmeier363980.99
Emmanuel P. Dinnat4369.95
Simon H. Yueh5686146.14
Thomas Meissner621232.82
David M. Le Vine725637.30
Kacie Shelton871.47
Adam P. Freedman9455.48
R. Scott Dunbar10403.33
Steven Tsz1117218.83
Rajat Bindlish1223534.58
Giovanni De Amici1353.51
Priscilla N. Mohammed14839.36
Liang Hong1519333.79
derek hudson16254.61
Thomas J. Jackson171368247.01