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azimuthal signature of coincidental brightness temperature and normalized radar cross-section obtained using airborne pals instrumentCoincidental airborne brightness temperature (TB) and normalized radar-cross section (NRCS) measurements were carried out with the PALS (Passive and Active L- and S-band) instrument in the SMAPVEX08 (SMAP Validation Experiment 2008) field campaign. This paper describes results obtained from a set of flights which measured a field in 45(sup o) steps over the azimuth angle. The field contained mature soy beans with distinct row structure. The measurement shows that both TB and NRCS experience modulation effects over the azimuth as expected based on the theory. The result is useful in development and validation of land surface parameter forward models and retrieval algorithms, such as the soil moisture algorithm for NASA's SMAP (Soil Moisture Active and Passive) mission. Although the footprint of the SMAP will not be sensitive to the small resolution scale effects as the one presented in this paper, it is nevertheless important to understand the effects at smaller scale.
Document ID
20150008580
Document Type
Conference Paper
External Source(s)
Authors
Colliander, Andreas
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kim, Seungbum
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Yueh, Simon
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Cosh, Mike
(Agricultural Research Service Albany, CA, United States)
Jackson, Tom
(Agricultural Research Service Albany, CA, United States)
Njoku, Eni
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 20, 2015
Publication Date
July 5, 2010
Subject Category
Geosciences (General)
Meeting Information
Progress in Electromagnetics Research Symposium(Cambridge, MA)
Distribution Limits
Public
Copyright
Other