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Retrieval of tropical forest biomass information from ALOS PALSAR data / Mahmudur Rahman in Geocarto international, vol 28 n° 5-6 (August - October 2013)  

Public [article]  inGeocarto international > vol 28 n° 5-6 (August - October 2013) . - pp 382 - 403 Titre : Retrieval of tropical forest biomass information from ALOS PALSAR data Type de document : Article/Communication Auteurs : Mahmudur Rahman, Auteur ; Josaphat Tetuko Sri Sumantyo, Auteur Année de publication : 2013 Article en page(s) : pp 382 - 403 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes descripteurs IGN] bande L [Termes descripteurs IGN] Bangladesh [Termes descripteurs IGN] biomasse [Termes descripteurs IGN] forêt tropicale [Termes descripteurs IGN] image ALOS-PALSAR [Termes descripteurs IGN] image radar moirée [Termes descripteurs IGN] régression [Termes descripteurs IGN] rétrodiffusion Résumé : (Auteur) Advanced Land Observing Satellite Phased Array L-band Synthetic Aperture Radar (ALOS PALSAR) data from different observation modes were analysed to determine (1) which observation mode most accurately retrieves tropical forest biomass information and (2) whether different modes, when considered together, yield improved results in comparison to identical data-sets analysed independently. We performed regression analysis to estimate above-ground forest biomass using PALSAR backscatter data for natural and planted forests in south-eastern Bangladesh. The coefficient of determination (r 2) was lower or equal to 0.499 (n = 70) when PALSAR data from different observation modes were separately considered, but increased sharply when one class (rubber) is dropped and average backscatter of fine beam single (FBS) and polarimetric (PLR) modes are used in the analysis. The results presented in this article are useful for both regional and global forest biomass inventories and fixing acquisition modes for planned L-band SAR missions. Numéro de notice : A2013-547 Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2012.710652 date de publication en ligne : 04/09/2012 En ligne : https://doi.org/10.1080/10106049.2012.710652 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32683 [article]

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Observations of urban and suburban environments with global satellite scatterometer data / Son V. Nghiem in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 4 (July - August 2009)

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 64 n° 4 (July - August 2009) . - pp 367 - 380 Titre : Observations of urban and suburban environments with global satellite scatterometer data Type de document : Article/Communication Auteurs : Son V. Nghiem, Auteur ; D. Balk, Auteur Année de publication : 2009 Article en page(s) : pp 367 - 380 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes descripteurs IGN] banlieue [Termes descripteurs IGN] BOGOTA [Termes descripteurs IGN] Canton (Kouangtoung) [Termes descripteurs IGN] Dallas (Texas) [Termes descripteurs IGN] densité de population [Termes descripteurs IGN] densité du bâti [Termes descripteurs IGN] détection de contours [Termes descripteurs IGN] Dhaka (Bangladesh) [Termes descripteurs IGN] diffusomètre [Termes descripteurs IGN] échantillonnage d'image [Termes descripteurs IGN] éclairage public [Termes descripteurs IGN] image Landsat-ETM+ [Termes descripteurs IGN] milieu urbain [Termes descripteurs IGN] Phoenix [Termes descripteurs IGN] QUITO [Termes descripteurs IGN] télédétection en hyperfréquence Résumé : (Auteur) A global and consistent characterization of land use and land change in urban and suburban environments is crucial for many fundamental social and natural science studies and applications. Presented here is a dense sampling method (DSM) that uses satellite scatterometer data to delineate urban and intraurban areas at a posting scale of about 1 km. DSM results are analyzed together with information on population and housing censuses, with Landsat Enhanced Thematic Mapper Plus (ETM+) imagery, and with Defense Meteorological Satellite Program (DMSP) night-light data. The analyses include Dallas-Fort Worth and Phoenix in the United States, Bogotá in Colombia, Dhaka in Bangladesh, Guangzhou in China, and Quito in Ecuador. Results show that scatterometer signatures correspond to buildings and infrastructures in urban and suburban environments. City extents detected by scatterometer data are significantly smaller than city light extents, but not all urban areas are detectable by the current SeaWinds scatterometer on the QuikSCAT satellite. Core commercial and industrial areas with high buildings and large factories are identified as high-backscatter centers. Data from DSM backscatter and DMSP nighttime lights have a good correlation with population density. However, the correlation relations from the two satellite datasets are different for different cities indicating that they contain complementary information. Together with night-light and census data, DSM and satellite scatterometer data provide new observations to study global urban and suburban environments and their changes. Furthermore, the capability of DSM to identify hydrological channels on the Greenland ice sheet and ecological biomes in central Africa demonstrates that DSM can be used to observe persistent structures in natural environments at a km scale, providing contemporaneous data to study human impacts beyond urban and suburban areas. Copyright ISPRS Numéro de notice : A2009-295 Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29925 [article]

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Use of TRMM in determining the climatic characteristics of rainfall over Bangladesh / M.N. Islam in Remote sensing of environment, vol 108 n° 3 (15/06/2007)

Public [article]  inRemote sensing of environment > vol 108 n° 3 (15/06/2007) . - pp 264 - 276 Titre : Use of TRMM in determining the climatic characteristics of rainfall over Bangladesh Type de document : Article/Communication Auteurs : M.N. Islam, Auteur ; H. Uyeda, Auteur Année de publication : 2007 Article en page(s) : pp 264 - 276 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes descripteurs IGN] analyse comparative [Termes descripteurs IGN] analyse diachronique [Termes descripteurs IGN] Bangladesh [Termes descripteurs IGN] climatologie [Termes descripteurs IGN] données météorologiques [Termes descripteurs IGN] estimation statistique [Termes descripteurs IGN] image radar [Termes descripteurs IGN] image TRMM-MI [Termes descripteurs IGN] précipitation Résumé : (Auteur) Five years of data from 1998 to 2002 of TRMM-3B42 version 5 (V5), 3B43 V5, 3B42 version 6 (V6), 3B43 V6, and the Bangladesh Meteorological Department rain-gauge network were analyzed to understand the climatic characteristics of rainfall over Bangladesh. TRMM-PR 2A25 data were used to obtain the precipitation field of the convection events. Daily rainfall measured by TRMM V5 3B42 was compared to that of rain-gauge values from pre-monsoon to post-monsoon months (March–November). The time sequence patterns of the daily rainfall determined by the V5 3B42 and those from rain gauges were remarkably similar. The spatial and temporal averages of rainfall revealed good estimations of rainfall: during March to November, the V5 3B42- and rain gauge-estimated daily rainfall was 8.12 and 8.34 mm, respectively. In annual scale, TRMM V5 3B42-, V5 3B43-, V6 3B42-, V6 3B43- and rain-gauge estimated rainfall was 6.9, 6.4, 6.6, 6.8 and 7.1 mm/day, respectively. The average percentage of rainy days determined by V5 3B42 data with respect to the rain-gauge value was 96%. TRMM is useful for estimating the average values of rainfall in Bangladesh. The prominent difference between rainfall estimated by rain-gauge and V5 3B42 was found to be period- and location-dependent. The V5 3B42 overestimated the rainfall during the pre-monsoon period and in dry regions but underestimated it during the monsoon period and in wet regions. The reason for the differences according to season and locations is considered to be the vertical cross section of convection obtained by TRMM-PR 2A25 data. The rainfall overestimation in pre-monsoon and underestimation in monsoon period measured by V5 3B42 is reduced to reasonable amount by V6 3B42 and V6 3B43. In this manner, the merit of using TRMM data for climatological studies of rainfall over Bangladesh is shown. Copyright Elsevier Numéro de notice : A2007-298 Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28661 [article]

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The derivation of a sub-canopy digital terrain model of a flooded forest using synthetic aperture radar / M.L. Imhoff in Photogrammetric Engineering & Remote Sensing, PERS, vol 56 n° 8 (august 1990)

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 56 n° 8 (august 1990) . - pp 1155 - 1162 Titre : The derivation of a sub-canopy digital terrain model of a flooded forest using synthetic aperture radar Type de document : Article/Communication Auteurs : M.L. Imhoff, Auteur ; D.B. Gesch, Auteur Année de publication : 1990 Article en page(s) : pp 1155 - 1162 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes descripteurs IGN] Bangladesh [Termes descripteurs IGN] couvert végétal [Termes descripteurs IGN] écosystème [Termes descripteurs IGN] forêt [Termes descripteurs IGN] hydrologie [Termes descripteurs IGN] image radar [Termes descripteurs IGN] image SIR-B [Termes descripteurs IGN] interpolation [Termes descripteurs IGN] mangrove [Termes descripteurs IGN] marée océanique [Termes descripteurs IGN] modèle numérique de terrain [Termes descripteurs IGN] réflexion (rayonnement) [Termes descripteurs IGN] rivage Numéro de notice : A1990-138 Thématique : FORET/IMAGERIE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25554 [article]

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Study of river flood hydrology in Bangladesh with AVHRR data / A. Ali in International Journal of Remote Sensing IJRS, vol 10 n° 12 (December 1989)

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 10 n° 12 (December 1989) . - pp 1873 - 1891 Titre : Study of river flood hydrology in Bangladesh with AVHRR data Type de document : Article/Communication Auteurs : A. Ali, Auteur ; D.A. Quadir, Auteur ; O.K. Huh, Auteur Année de publication : 1989 Article en page(s) : pp 1873 - 1891 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes descripteurs IGN] albedo [Termes descripteurs IGN] Bangladesh [Termes descripteurs IGN] correction géométrique [Termes descripteurs IGN] hydrologie [Termes descripteurs IGN] image NOAA-AVHRR [Termes descripteurs IGN] Inde [Termes descripteurs IGN] inondation [Termes descripteurs IGN] rivière [Termes descripteurs IGN] température [Termes descripteurs IGN] turbidité des eaux Numéro de notice : A1989-404 Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25363 [article]

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Floods in Bangladesh, a preliminary study with Spot 1 data / François Blasco (1989)

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Agricultural, hydrologic and oceanographic studies in Bangladesh with NOAA AVHRR data / A. Ali in International Journal of Remote Sensing IJRS, vol 8 n° 6 (June 1987)

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Monsoon flood boundary delineation and damage assessment using space borne imaging radar and Landsat data / M.L. Imhoff in Photogrammetric Engineering & Remote Sensing, PERS, vol 53 n° 4 (april 1987)

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Regional seminar on the application of remote sensing techniques to coastal zone management and environmental monitoring, Dhaka, Bangladesh, 18-26 november 1986 / M.A.H. Pramanik in International Journal of Remote Sensing IJRS, vol 8 n° 4 (April 1987)

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Report of the workshop on high resolution satellite data, Jakarta, Indonesia, 19 - 21 October 1987 / Programme des Nations unies pour le développement PNUD UNDP/ESCAP (1987)

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Étude de l'aridité au nord-ouest du Bangladesh (Barind Tract) par télédétection / S. Ahmed (1985)

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Télédétection et végétation tropicale / F. Lavenu (1984)

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