Multi-temporal 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. 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. 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°). TerraSAR data showed that after strong rains the soil contribution for the backscattering of sugarcane fields can be consequent for canes with heights of terminal visible dewlap (htvd) less than 50cm (total cane heights around 155cm). Finally, TerraSAR data at high spatial resolution were shown to be useful for monitoring sugarcane harvest when the fields are of small size or when the cut is spread out in time. The comparison between incidences of 17°, 37° and 58° shows that 37° is more suitable to monitor the sugarcane harvest. The cut is easily detectable on TerraSAR images for data acquired less than two or three months after the cut. The radar signal decreases of about 5dB for images acquired some days after the cut and of 3dB for data acquired two month after the cut (VV-37°). The difference in radar signal becomes negligible (<1dB) between harvested fields and mature canes for sugarcane harvested since three months or more.
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Subjects: | U30 - Méthodes de recherche, F01 - Culture des plantes, F62 - Physiologie végétale - Croissance et développement, Saccharum officinarum, radar, surveillance des cultures, récolte, télédétection, http://aims.fao.org/aos/agrovoc/c_6727, http://aims.fao.org/aos/agrovoc/c_24071, http://aims.fao.org/aos/agrovoc/c_37838, http://aims.fao.org/aos/agrovoc/c_3500, http://aims.fao.org/aos/agrovoc/c_6498, http://aims.fao.org/aos/agrovoc/c_6543, http://aims.fao.org/aos/agrovoc/c_3081, |
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dig-cirad-fr-5617082024-01-28T19:40:09Z http://agritrop.cirad.fr/561708/ http://agritrop.cirad.fr/561708/ Multi-temporal observations of sugarcane by Terrasar-X images. Baghdadi Nicolas, Todoroff Pierre, Rabaute Thierry, Tinel Claire. 2011. In : 4th TerraSAR-X Science Team Meeting, Oberpfaffenhofen, Germany, 14-16 February 2011. s.l. : s.n., 7 p. TerraSAR-X Science Team Meeting. 4, Oberpfaffehofen, Allemagne, 14 Février 2011/16 Février 2011. Multi-temporal observations of sugarcane by Terrasar-X images Baghdadi, Nicolas Todoroff, Pierre Rabaute, Thierry Tinel, Claire eng 2011 s.n. 4th TerraSAR-X Science Team Meeting, Oberpfaffenhofen, Germany, 14-16 February 2011 U30 - Méthodes de recherche F01 - Culture des plantes F62 - Physiologie végétale - Croissance et développement Saccharum officinarum radar surveillance des cultures récolte télédétection http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_6498 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. 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. 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°). TerraSAR data showed that after strong rains the soil contribution for the backscattering of sugarcane fields can be consequent for canes with heights of terminal visible dewlap (htvd) less than 50cm (total cane heights around 155cm). Finally, TerraSAR data at high spatial resolution were shown to be useful for monitoring sugarcane harvest when the fields are of small size or when the cut is spread out in time. The comparison between incidences of 17°, 37° and 58° shows that 37° is more suitable to monitor the sugarcane harvest. The cut is easily detectable on TerraSAR images for data acquired less than two or three months after the cut. The radar signal decreases of about 5dB for images acquired some days after the cut and of 3dB for data acquired two month after the cut (VV-37°). The difference in radar signal becomes negligible (<1dB) between harvested fields and mature canes for sugarcane harvested since three months or more. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/561708/1/document_561708.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html |
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U30 - Méthodes de recherche F01 - Culture des plantes F62 - Physiologie végétale - Croissance et développement Saccharum officinarum radar surveillance des cultures récolte télédétection http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 U30 - Méthodes de recherche F01 - Culture des plantes F62 - Physiologie végétale - Croissance et développement Saccharum officinarum radar surveillance des cultures récolte télédétection http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_6498 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 F62 - Physiologie végétale - Croissance et développement Saccharum officinarum radar surveillance des cultures récolte télédétection http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 U30 - Méthodes de recherche F01 - Culture des plantes F62 - Physiologie végétale - Croissance et développement Saccharum officinarum radar surveillance des cultures récolte télédétection http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 Baghdadi, Nicolas Todoroff, Pierre Rabaute, Thierry Tinel, Claire Multi-temporal 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. 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. 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°). TerraSAR data showed that after strong rains the soil contribution for the backscattering of sugarcane fields can be consequent for canes with heights of terminal visible dewlap (htvd) less than 50cm (total cane heights around 155cm). Finally, TerraSAR data at high spatial resolution were shown to be useful for monitoring sugarcane harvest when the fields are of small size or when the cut is spread out in time. The comparison between incidences of 17°, 37° and 58° shows that 37° is more suitable to monitor the sugarcane harvest. The cut is easily detectable on TerraSAR images for data acquired less than two or three months after the cut. The radar signal decreases of about 5dB for images acquired some days after the cut and of 3dB for data acquired two month after the cut (VV-37°). The difference in radar signal becomes negligible (<1dB) between harvested fields and mature canes for sugarcane harvested since three months or more. |
format |
conference_item |
topic_facet |
U30 - Méthodes de recherche F01 - Culture des plantes F62 - Physiologie végétale - Croissance et développement Saccharum officinarum radar surveillance des cultures récolte télédétection http://aims.fao.org/aos/agrovoc/c_6727 http://aims.fao.org/aos/agrovoc/c_24071 http://aims.fao.org/aos/agrovoc/c_37838 http://aims.fao.org/aos/agrovoc/c_3500 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Baghdadi, Nicolas Todoroff, Pierre Rabaute, Thierry Tinel, Claire |
author_facet |
Baghdadi, Nicolas Todoroff, Pierre Rabaute, Thierry Tinel, Claire |
author_sort |
Baghdadi, Nicolas |
title |
Multi-temporal observations of sugarcane by Terrasar-X images |
title_short |
Multi-temporal observations of sugarcane by Terrasar-X images |
title_full |
Multi-temporal observations of sugarcane by Terrasar-X images |
title_fullStr |
Multi-temporal observations of sugarcane by Terrasar-X images |
title_full_unstemmed |
Multi-temporal observations of sugarcane by Terrasar-X images |
title_sort |
multi-temporal observations of sugarcane by terrasar-x images |
publisher |
s.n. |
url |
http://agritrop.cirad.fr/561708/ http://agritrop.cirad.fr/561708/1/document_561708.pdf |
work_keys_str_mv |
AT baghdadinicolas multitemporalobservationsofsugarcanebyterrasarximages AT todoroffpierre multitemporalobservationsofsugarcanebyterrasarximages AT rabautethierry multitemporalobservationsofsugarcanebyterrasarximages AT tinelclaire multitemporalobservationsofsugarcanebyterrasarximages |
_version_ |
1792497953877786624 |