CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 9260 > Article
Paper
8 November 2014 A new algorithm for phase transition water content retrieval during soil freeze-thaw process using microwave radiometer
Qinyu Ye, Linna Chai
Author Affiliations +
Proceedings Volume 9260, Land Surface Remote Sensing II; 92600R (2014) https://doi.org/10.1117/12.2068719
Event: SPIE Asia-Pacific Remote Sensing, 2014, Beijing, China
Abstract
Seasonally soil freeze-thaw process has a profound impact on hydrologic cycle, meteorology and soil erosion. A useful indicator to evaluate the soil freeze-thaw intensity is the amount of phase transition water content (PTWC) in soil pores. In this research, a large dataset of simulated brightness temperature were generated using Advanced Integral Equation Model (AIEM) based on the configuration of the Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E) with soil parameters changing in a wide range. Through analyzing of the simulated brightness temperature and PTWC, a nearly linear correlation relationship existed between the brightness temperature difference of frozen and thawed soil in vertical or horizontal polarization to the PTWC, but it was affected by soil roughness. Then a statistical algorithm was put forward to estimate the PTWC using a combined brightness temperature of vertical and horizontal polarization. Finally, this algorithm was applied to the ground-based radiometer observation and validated by the ground truth. The results showed that this algorithm had an acceptable precision with a root mean square error (RMSE) of 0.0261 (m3/m3) and the absolute error less than 0.02 (m3/m3) was about 82.67%. The advantage of this algorithm is that it combines v and h polarization brightness temperature through adding different weights on them so as to weaken the influence of surface roughness and achieves the desired results.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Qinyu Ye and Linna Chai "A new algorithm for phase transition water content retrieval during soil freeze-thaw process using microwave radiometer", Proc. SPIE 9260, Land Surface Remote Sensing II, 92600R (8 November 2014); https://doi.org/10.1117/12.2068719
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 8 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Soil science
Radiometry
Dielectrics
Microwave radiation
Polarization
Statistical analysis
Surface roughness
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top