Publication Date:
2019-07-13
Description:
Current performance and existing problems in SMAP radiometer L1B_TB version 3 data product are described. The post-launch calibration algorithm has been updated by calibrating the three calibration parameters (the equivalent noise temperature of the noise diode, the offset of the reference load, and the antenna gain) jointly by using the global ocean and CS with both 110o and 180o pitch maneuvers after the reflector emissivity is calibrated. The results show that both calibration drift during eclipse season and bias over CS are removed. The RMSDs of the calibration drift over both the global ocean and CS are less than 0.1 K, and the goals of the calibration algorithm upgrade are achieved for coming L1B_TB version 4 data release.
Keywords:
Geosciences (General)
Type:
GSFC-E-DAA-TN53661
,
Microwave Radiometry and Remote Sensing of the Environment (MicroRad 2018); Mar 27, 2018 - Mar 30, 2018; Cambridge, MA; United States
Format:
application/pdf