Multitemporal Observations of Sugarcane by TerraSAR-X Images
The objective of this study is to investigate the potential of TerraSAR-X (X-band) in monitoring sugarcane growth on Reunion Island (located in the Indian Ocean). Multi-temporal TerraSAR data acquired at various incidence angles (17°, 31°, 37°, 47°, 58°) and polarizations (HH, HV, VV) were analyzed in order to study the behaviour of SAR (synthetic aperture radar) signal as a function of sugarcane height and NDVI (Normalized Difference Vegetation Index). The potential of TerraSAR for mapping the sugarcane harvest was also studied. Radar signal increased quickly with crop height until a threshold height, which depended on polarization and incidence angle. Beyond this threshold, the signal increased only slightly, remained constant, or even decreased. The threshold height is slightly higher with cross polarization and higher incidence angles (47° in comparison with 17° and 31°). Results also showed that the co-polarizations channels (HH and VV) were well correlated. High correlation between SAR signal and NDVI calculated from SPOT-4/5 images was observed. TerraSAR data showed that after strong rains the soil contribution to the backscattering of sugarcane fields can be important for canes with heights of terminal visible dewlap (htvd) less than 50 cm (total cane heights around 155 cm). This increase in radar signal after strong rains could involve an ambiguity between young and mature canes. Indeed, the radar signal on TerraSAR images acquired in wet soil conditions could be of the same order for fields recently harvested and mature sugarcane fields, making difficult the detection of cuts. Finally, TerraSAR data at high spatial resolution were shown to be useful for monitoring sugarcane harvest when the fields are of small size.
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Subjects: | U30 - Méthodes de recherche, F01 - Culture des plantes, Saccharum officinarum, télédétection, radar, surveillance des cultures, stade de développement végétal, récolte, imagerie par satellite, image spot, http://aims.fao.org/aos/agrovoc/c_6727, http://aims.fao.org/aos/agrovoc/c_6498, http://aims.fao.org/aos/agrovoc/c_24071, http://aims.fao.org/aos/agrovoc/c_37838, http://aims.fao.org/aos/agrovoc/c_5959, http://aims.fao.org/aos/agrovoc/c_3500, http://aims.fao.org/aos/agrovoc/c_36761, http://aims.fao.org/aos/agrovoc/c_16343, http://aims.fao.org/aos/agrovoc/c_6543, http://aims.fao.org/aos/agrovoc/c_3081, |
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dig-cirad-fr-5674792024-01-28T21:09:10Z http://agritrop.cirad.fr/567479/ http://agritrop.cirad.fr/567479/ Multitemporal Observations of Sugarcane by TerraSAR-X Images. Baghdadi Nicolas, Cresson Rémi, Todoroff Pierre, Moinet Soizic. 2010. Sensors, 10 (10) : 8899-8919.https://doi.org/10.3390/s101008899 <https://doi.org/10.3390/s101008899> Multitemporal Observations of Sugarcane by TerraSAR-X Images Baghdadi, Nicolas Cresson, Rémi Todoroff, Pierre Moinet, Soizic eng 2010 Sensors U30 - Méthodes de recherche F01 - Culture des plantes Saccharum officinarum télédétection radar surveillance des cultures stade de développement végétal récolte imagerie par satellite image spot http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_16343 La Réunion France http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 The objective of this study is to investigate the potential of TerraSAR-X (X-band) in monitoring sugarcane growth on Reunion Island (located in the Indian Ocean). Multi-temporal TerraSAR data acquired at various incidence angles (17°, 31°, 37°, 47°, 58°) and polarizations (HH, HV, VV) were analyzed in order to study the behaviour of SAR (synthetic aperture radar) signal as a function of sugarcane height and NDVI (Normalized Difference Vegetation Index). The potential of TerraSAR for mapping the sugarcane harvest was also studied. Radar signal increased quickly with crop height until a threshold height, which depended on polarization and incidence angle. Beyond this threshold, the signal increased only slightly, remained constant, or even decreased. The threshold height is slightly higher with cross polarization and higher incidence angles (47° in comparison with 17° and 31°). Results also showed that the co-polarizations channels (HH and VV) were well correlated. High correlation between SAR signal and NDVI calculated from SPOT-4/5 images was observed. TerraSAR data showed that after strong rains the soil contribution to the backscattering of sugarcane fields can be important for canes with heights of terminal visible dewlap (htvd) less than 50 cm (total cane heights around 155 cm). This increase in radar signal after strong rains could involve an ambiguity between young and mature canes. Indeed, the radar signal on TerraSAR images acquired in wet soil conditions could be of the same order for fields recently harvested and mature sugarcane fields, making difficult the detection of cuts. Finally, TerraSAR data at high spatial resolution were shown to be useful for monitoring sugarcane harvest when the fields are of small size. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/567479/1/document_567479.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.3390/s101008899 10.3390/s101008899 info:eu-repo/semantics/altIdentifier/doi/10.3390/s101008899 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.3390/s101008899 |
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U30 - Méthodes de recherche F01 - Culture des plantes Saccharum officinarum télédétection radar surveillance des cultures stade de développement végétal récolte imagerie par satellite image spot http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_16343 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 U30 - Méthodes de recherche F01 - Culture des plantes Saccharum officinarum télédétection radar surveillance des cultures stade de développement végétal récolte imagerie par satellite image spot http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_16343 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 |
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U30 - Méthodes de recherche F01 - Culture des plantes Saccharum officinarum télédétection radar surveillance des cultures stade de développement végétal récolte imagerie par satellite image spot http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_16343 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 U30 - Méthodes de recherche F01 - Culture des plantes Saccharum officinarum télédétection radar surveillance des cultures stade de développement végétal récolte imagerie par satellite image spot http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_16343 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 Baghdadi, Nicolas Cresson, Rémi Todoroff, Pierre Moinet, Soizic Multitemporal Observations of Sugarcane by TerraSAR-X Images |
description |
The objective of this study is to investigate the potential of TerraSAR-X (X-band) in monitoring sugarcane growth on Reunion Island (located in the Indian Ocean). Multi-temporal TerraSAR data acquired at various incidence angles (17°, 31°, 37°, 47°, 58°) and polarizations (HH, HV, VV) were analyzed in order to study the behaviour of SAR (synthetic aperture radar) signal as a function of sugarcane height and NDVI (Normalized Difference Vegetation Index). The potential of TerraSAR for mapping the sugarcane harvest was also studied. Radar signal increased quickly with crop height until a threshold height, which depended on polarization and incidence angle. Beyond this threshold, the signal increased only slightly, remained constant, or even decreased. The threshold height is slightly higher with cross polarization and higher incidence angles (47° in comparison with 17° and 31°). Results also showed that the co-polarizations channels (HH and VV) were well correlated. High correlation between SAR signal and NDVI calculated from SPOT-4/5 images was observed. TerraSAR data showed that after strong rains the soil contribution to the backscattering of sugarcane fields can be important for canes with heights of terminal visible dewlap (htvd) less than 50 cm (total cane heights around 155 cm). This increase in radar signal after strong rains could involve an ambiguity between young and mature canes. Indeed, the radar signal on TerraSAR images acquired in wet soil conditions could be of the same order for fields recently harvested and mature sugarcane fields, making difficult the detection of cuts. Finally, TerraSAR data at high spatial resolution were shown to be useful for monitoring sugarcane harvest when the fields are of small size. |
format |
article |
topic_facet |
U30 - Méthodes de recherche F01 - Culture des plantes Saccharum officinarum télédétection radar surveillance des cultures stade de développement végétal récolte imagerie par satellite image spot http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_16343 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Baghdadi, Nicolas Cresson, Rémi Todoroff, Pierre Moinet, Soizic |
author_facet |
Baghdadi, Nicolas Cresson, Rémi Todoroff, Pierre Moinet, Soizic |
author_sort |
Baghdadi, Nicolas |
title |
Multitemporal Observations of Sugarcane by TerraSAR-X Images |
title_short |
Multitemporal Observations of Sugarcane by TerraSAR-X Images |
title_full |
Multitemporal Observations of Sugarcane by TerraSAR-X Images |
title_fullStr |
Multitemporal Observations of Sugarcane by TerraSAR-X Images |
title_full_unstemmed |
Multitemporal Observations of Sugarcane by TerraSAR-X Images |
title_sort |
multitemporal observations of sugarcane by terrasar-x images |
url |
http://agritrop.cirad.fr/567479/ http://agritrop.cirad.fr/567479/1/document_567479.pdf |
work_keys_str_mv |
AT baghdadinicolas multitemporalobservationsofsugarcanebyterrasarximages AT cressonremi multitemporalobservationsofsugarcanebyterrasarximages AT todoroffpierre multitemporalobservationsofsugarcanebyterrasarximages AT moinetsoizic multitemporalobservationsofsugarcanebyterrasarximages |
_version_ |
1792498387386368000 |