Mwr Smear Effect: A Counts-Level Empirical Correction And Possible Causes
Keywords
Brightness temperatures (TB); microwave radiometer (MWR); smear effect
Abstract
The microwave radiometer (MWR) is a Dicke radiometer on board of the Aquarius (AQ)/SAC-D satellite. It was developed by Argentine space agency, Comisión Nacional De Actividades Espaciales (CONAE), and operates at 23.8 and 36.5 GHz frequencies. After MWR initially turned on, the first brightness temperature Ts measurements were obtained, observing an anomalous recurrent effect when analyzing land/water crossings. The effect is present for all frequencies and earth incidence angles (EIAs) and results in a smearing of Ts observations near strong contrast radiometric scenes. This paper summarizes the main features and discoveries around this anomaly leading to a general description of the problem: coupling of sequential MWR measurements. Consequently, an empirical correction algorithm is derived and validated. Also, possible causes are investigated.
Publication Date
12-1-2015
Publication Title
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Volume
8
Issue
12
Number of Pages
5468-5473
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1109/JSTARS.2015.2448512
Copyright Status
Unknown
Socpus ID
84938785333 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84938785333
STARS Citation
Labanda, Martin; Jacob, Maria Marta; Farrar, Spencer; Masuelli, Sergio; and Jones, Linwood, "Mwr Smear Effect: A Counts-Level Empirical Correction And Possible Causes" (2015). Scopus Export 2015-2019. 993.
https://stars.library.ucf.edu/scopus2015/993