Assessing the Potential of Fully Polarimetric Mono- and Bistatic SAR Acquisitions in L-Band for Crop and Soil Monitoring

Bouchat, Jean; Tronquo, Emma; Orban, Anne; Verhoest, Niko E. C.; Defourny, Pierre

doi:10.1109/JSTARS.2022.3162911

Article (Scientific journals)

Assessing the Potential of Fully Polarimetric Mono- and Bistatic SAR Acquisitions in L-Band for Crop and Soil Monitoring

Bouchat, Jean; Tronquo, Emma; Orban, Anne et al.

2022 • In IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 15, p. 3168 - 3178

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/308246

DOI
10.1109/JSTARS.2022.3162911

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Keywords :

Agriculture; biophysical variables; bistatic synthetic aperture radar (SAR); L-band; maize; row structure; soil moisture; Azimuth; Bio-physical variables; Bistatic; Bistatic synthetic aperture radar; Maize; MONOS device; Radar data; Row structure; Computers in Earth Sciences; Atmospheric Science

Abstract :

[en] Theoretical studies have shown that the use of simultaneous mono- and bistatic synthetic aperture radar (SAR) data could be beneficial to agriculture and soil moisture monitoring. This study makes use of extensive ground-truth measurements and synchronous high-resolution fully polarimetric mono- and bistatic airborne SAR data in L-band to assess and compare the sensitivity of mono- and multistatic systems to the maize canopy row structure and biophysical variables, as well as to soil moisture and surface roughness in both vegetated and bare fields. The effect of the row structure of maize crops is assessed through the impact of the orientation of the planting rows relative to the sensor beam on microwave scattering measurements. The results of this analysis suggest that the row orientation of maize crops has a significant influence on both mono- and bistatic scattering measurements in both copolarizations, and especially, in HH, while the cross polarizations are not affected. Furthermore, the study also shows through a linear regression analysis that bistatic data, even with a very small bistatic baseline, can provide valuable additional information for maize crop biophysical variable retrieval, which however does not appear to be the case for soil moisture retrieval over bare soils.

Research Center/Unit :

CSL - Centre Spatial de Liège - ULiège

Disciplines :

Physics

Author, co-author :

Bouchat, Jean ; Université Catholique De Louvain, Earth And Life Institute, Louvain-la-Neuve, Belgium

Tronquo, Emma ; Ghent University, Hydro-Climate Extremes Lab (H-CEL), Ghent, Belgium

Orban, Anne ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège)

Verhoest, Niko E. C. ; Ghent University, Hydro-Climate Extremes Lab (H-CEL), Ghent, Belgium

Defourny, Pierre ; Université Catholique De Louvain, Earth And Life Institute, Louvain-la-Neuve, Belgium

Language :

English

Title :

Assessing the Potential of Fully Polarimetric Mono- and Bistatic SAR Acquisitions in L-Band for Crop and Soil Monitoring

Publication date :

2022

Journal title :

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

ISSN :

1939-1404

eISSN :

2151-1535

Publisher :

Institute of Electrical and Electronics Engineers Inc.

Volume :

Pages :

3168 - 3178

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://xplorestaging.ieee.org/ielx7/4609443/9656571/09744561.pdf?arnumber=9744561

Funders :

BELSPO - Belgian Federal Science Policy Office
ESA - European Space Agency

Available on ORBi :

since 27 October 2023

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