MONITORING OF TIME-SERIES SOIL MOISTURE BASED ON ADVANCED DINSAR
نویسندگان
چکیده
منابع مشابه
Study of soil moisture change effects on L-band DInSAR phase
The Differential Synthetic Aperture Radar Interferometry (DInSAR) technique is recognized as a potential remote sensing tool for detecting ground surface displacements with less than a centimetre accuracy. The surface soil moisture changes ( 1clip_image001.png" > ) during the time between the two images as an effective parameter on interferometry phase 1clip_image002.png" > ), leads to incorrec...
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The mapping of soil moisture at field scales can potentially be achieved by the remote sensing technique differential interferometry, or DInSAR. Its signals have been shown to be sensitive to soil moisture changes. We analyse the suitability for this task of three DInSAR observables: the phase φ, the coherence |γ| and the phase triplets Ξ. By inverting an electromagnetic scattering model, we ob...
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Changes in soil moisture between two radar acquisitions can impact the observed coherence in differential interferometry: both coherence magnitude |γ| and phase φ are affected. The influence on the latter potentially biases the estimation of deformations. These effects have been found to be variable in magnitude and sign, as well as dependent on polarization, as opposed to predictions by existi...
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ژورنال
عنوان ژورنال: ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
سال: 2021
ISSN: 2194-9050
DOI: 10.5194/isprs-annals-v-3-2021-51-2021