Sensitivity Analysis of Copolar Complex Coherence for Crop Monitoring At L-Band
Time series of polarimetric synthetic aperture radar (SAR) images are usually employed for agricultural crop monitoring. Most methods exploit backscattering coefficients, radar vegetation indices (RVI), and outputs from target decompositions. This article investigates the sensitivity of the copolar...
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| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
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| Online Access: | https://ieeexplore.ieee.org/document/10836873/ |
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| author | Jiayin Luo Juan M. Lopez-Sanchez Irena Hajnsek |
| author_facet | Jiayin Luo Juan M. Lopez-Sanchez Irena Hajnsek |
| author_sort | Jiayin Luo |
| collection | DOAJ |
| description | Time series of polarimetric synthetic aperture radar (SAR) images are usually employed for agricultural crop monitoring. Most methods exploit backscattering coefficients, radar vegetation indices (RVI), and outputs from target decompositions. This article investigates the sensitivity of the copolar complex coherence to the growth of three crop types (barley, corn, and canola) using <italic>L</italic>-band data from two airborne campaigns. The copolar complex coherence is represented on the complex plane (unit circle) for interpretation. The experimental results from this article reveal that the changes in the position of the copolar complex coherence and the shape of complex coherence region are highly sensitive to specific growth stages of the examined crops. For a given crop type, changes in coherence can reflect variations in crop biophysical parameters, and inhomogeneities within the field. Furthermore, the trends in coherence variation throughout the given growth stages differ among crop types. |
| format | Article |
| id | doaj-art-74084b736de44db4ba65a928ae7c20b3 |
| institution | Kabale University |
| issn | 1939-1404 2151-1535 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| spelling | doaj-art-74084b736de44db4ba65a928ae7c20b32025-02-12T00:00:51ZengIEEEIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing1939-14042151-15352025-01-01184850486610.1109/JSTARS.2025.352810010836873Sensitivity Analysis of Copolar Complex Coherence for Crop Monitoring At L-BandJiayin Luo0https://orcid.org/0009-0002-0548-3454Juan M. Lopez-Sanchez1https://orcid.org/0000-0002-4216-5175Irena Hajnsek2https://orcid.org/0000-0002-0926-3283College of Resources and Civil Engineering, Northeastern University, Shenyang, ChinaInstitute for Computer Research, University of Alicante, Alicante, SpainMicrowaves and Radar Institute, German Aerospace Center (DLR), Wessling, GermanyTime series of polarimetric synthetic aperture radar (SAR) images are usually employed for agricultural crop monitoring. Most methods exploit backscattering coefficients, radar vegetation indices (RVI), and outputs from target decompositions. This article investigates the sensitivity of the copolar complex coherence to the growth of three crop types (barley, corn, and canola) using <italic>L</italic>-band data from two airborne campaigns. The copolar complex coherence is represented on the complex plane (unit circle) for interpretation. The experimental results from this article reveal that the changes in the position of the copolar complex coherence and the shape of complex coherence region are highly sensitive to specific growth stages of the examined crops. For a given crop type, changes in coherence can reflect variations in crop biophysical parameters, and inhomogeneities within the field. Furthermore, the trends in coherence variation throughout the given growth stages differ among crop types.https://ieeexplore.ieee.org/document/10836873/Agriculturecopolar complex coherencephenologypolarimetrysynthetic aperture radar (SAR)vegetation |
| spellingShingle | Jiayin Luo Juan M. Lopez-Sanchez Irena Hajnsek Sensitivity Analysis of Copolar Complex Coherence for Crop Monitoring At L-Band IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Agriculture copolar complex coherence phenology polarimetry synthetic aperture radar (SAR) vegetation |
| title | Sensitivity Analysis of Copolar Complex Coherence for Crop Monitoring At L-Band |
| title_full | Sensitivity Analysis of Copolar Complex Coherence for Crop Monitoring At L-Band |
| title_fullStr | Sensitivity Analysis of Copolar Complex Coherence for Crop Monitoring At L-Band |
| title_full_unstemmed | Sensitivity Analysis of Copolar Complex Coherence for Crop Monitoring At L-Band |
| title_short | Sensitivity Analysis of Copolar Complex Coherence for Crop Monitoring At L-Band |
| title_sort | sensitivity analysis of copolar complex coherence for crop monitoring at l band |
| topic | Agriculture copolar complex coherence phenology polarimetry synthetic aperture radar (SAR) vegetation |
| url | https://ieeexplore.ieee.org/document/10836873/ |
| work_keys_str_mv | AT jiayinluo sensitivityanalysisofcopolarcomplexcoherenceforcropmonitoringatlband AT juanmlopezsanchez sensitivityanalysisofcopolarcomplexcoherenceforcropmonitoringatlband AT irenahajnsek sensitivityanalysisofcopolarcomplexcoherenceforcropmonitoringatlband |