This title appears in the Scientific Report :
2014
Please use the identifier:
http://dx.doi.org/10.1109/IGARSS.2011.6049872 in citations.
Soil moisture retrieval using L-band radiometer and ground-penetrating radar.
Soil moisture retrieval using L-band radiometer and ground-penetrating radar.
The objective of this study was to evaluate tworemote-sensing methods for mapping the surface soil moistureof a bare soil, namely L-band radiometry using brightnesstemperature and ground-penetrating radar (GPR) using surfacereflection inversion. Invasive time-domain reflectometry (TDR)measurements w...
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Personal Name(s): | Jonard, Francois (Corresponding Author) |
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Weihermuller, Lutz / Schwank, Mike / Vereecken, Harry / Lambot, Sebastien | |
Contributing Institute: |
Agrosphäre; IBG-3 |
Imprint: |
IEEE
2011
|
Physical Description: |
3093-3096 |
DOI: |
10.1109/IGARSS.2011.6049872 |
Conference: | 2011 IEEE International Geoscience and Remote Sensing Symposium, Vancouver (Canada), 2011-07-24 - 2011-07-29 |
Document Type: |
Contribution to a conference proceedings |
Research Program: |
Terrestrial Systems: From Observation to Prediction Modelling and Monitoring Terrestrial Systems: Methods and Technologies |
Publikationsportal JuSER |
The objective of this study was to evaluate tworemote-sensing methods for mapping the surface soil moistureof a bare soil, namely L-band radiometry using brightnesstemperature and ground-penetrating radar (GPR) using surfacereflection inversion. Invasive time-domain reflectometry (TDR)measurements were used as a reference. A field experiment wasperformed in which these three methods were used to map soilmoisture after controlled heterogeneous irrigation that ensureda wide range of water content. The heterogeneous irrigationpattern was reasonably well reproduced by both remote-sensingtechniques. For GPR, the effect of roughness was excluded byoperating at low frequencies (0.2-0.8 GHz) that were not sensitiveto the field surface roughness. For the radiometer, the effectof roughness was accounted for using an empirical model thatrequired calibration with the reference TDR measurements. Theroot mean square (RMS) error between soil moisture measuredby GPR and TDR was 0.038 m3 m−3 while the RMS errorbetween radiometer (horizontal and vertical polarizations)- andTDR-derived soil water content was 0.020 m3 m−3. These resultssuggest that both remote-sensing techniques are promising forfield-scale mapping of surface soil moisture over bare soils. |