Спутник ДЗЗ. Sentinel 2A. [Редактировать]

Sentinel-2 будет оснащен оптико-электронным мультиспектральным сенсором для съемок с разрешением от 10 до 60 м в видимой, ближней инфракрасной (VNIR) и коротковолновой инфракрасной (SWIR) зонах спектра, включающих в себя 13 спектральных каналов, что гарантирует отображение различий в состоянии растительности, в том числе и временные изменения, а также сводит к минимуму влияние на качество съемки атмосферы. Орбита высотой в среднем 785 км, наличие в миссии двух спутников позволит проводить повторные съемки каждые 5 дней на экваторе и каждые 2–3 дня в средних широтах. Первый спутник планируется запустить в 2013 г. Увеличение ширины полосы обзора наряду с высокой повторяемостью съемок позволит отслеживать быстро изменяющиеся процессы, например изменение характера растительности в течение вегетационного периода. Данные Sentinel-2 будут обеспечивать сервисы GMES, связанные, например, с управлением земельными ресурсами, сельскохозяйственным производством и лесным хозяйством, а также мониторингом стихийных бедствий и гуманитарных операций. Уникальность миссии Sentinel-2 связана с сочетанием большого территориального охвата, частых повторных съемок и, как следствие, систематическим получением полного покрытия всей Земли мультиспектральной съем- кой высокого разрешения.

Дополнительная классификация

#Наименования
1Тип орбиты - НОО
2Страна оператор(владелец) - Европа
3Страна производитель - Европа
4Тип оператора(владельца) - государственный
5Все спутники ДЗЗ

Технические характеристики

#ХарактеристикаЗначение
1Масса КА, кг1100
2Расчетный срок функционирования, год7
3Ширина полосы съемки, км290
4Периодичность съемки, суткиот 5 на экваторе до 2-3 в средних широтах
5Пространственное разрешение в надире (канал 1-4), метра10
6Пространственное разрешение в надире (канал 5-10), метра20
7Пространственное разрешение в надире (канал 11-13), метра60
8Энергопотребление при съемке, Вт266
9Режим съемкигиперспектральный
10Оптическое совмещение спектральных диапазонов МКне совмещены
11Коэфициент сжатия видеоинформации, раз2.6

Характеристики орбиты

#ХарактеристикаЗначение
1Высота орбиты, км800
2Тип орбитыССО
3САС (по конструкции), год7.25
4САС (по топливу), год12

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Страна Франция
2Стоимость (аппарат), млн. евро190
3Стоимость (аппарат), млн. долл.2008-02-17304
4Разработчик EADS Astrium Satellites
5Оператор Европейское космическое агентство

Информация об удачном запуске

#ХарактеристикаЗначение
1Космодром Космодром Куру
2Дата пуска2015-06-23
3Полезная нагрузка 1xSentinel 2A
4Ракета-носитель 1xВега

Найдено 569 документов по запросу «Sentinel 2A». [Перейти к поиску]


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... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document issue... x A P P R O V A L Title Titre GMES Space Component - Sentinel-2 Payload Data issue Ground Segment...) - Products Definition issue Document author Sentinel-2 PDGS Project Team date auteur... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document issue.........................................................................................................................11 1.2.1 GMES and the Sentinel-2 Mission ............................................................................11 1.2.2 Sentinel-2 Payload Data Ground-Segment... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... of the Sentinel-2 products to be generated by the Sentinel-2 Payload Data... formats. 1.2 Background 1.2.1 GMES AND THE SENTINEL-2 MISSION GMES, which stands for... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... revisit frequency. 1.2.2 SENTINEL-2 PAYLOAD DATA GROUND-SEGMENT The Sentinel-2 Payload Data Ground Segment (PDGS) is a component of the Sentinel-2 system responsible for feeding Sentinel-2 data to the... scope of the Sentinel-2 PDGS includes the provision of Sentinel-2 data to... the generation and distribution of Sentinel-2 products according to the definitions... Processor Facilities (IPFs) of the Sentinel-2 PDGS. The prototype processor software... Sentinel-2 Product Definition Guidelines [RD-07] prepared in the course of Sentinel... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... includes all Sentinel-2 products from Level-0 up to the Level-2A. It... of harmonising the Level-2A product within a consistent Sentinel-2 global product model... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue....06.2010 [RD-12] Sentinel-2 Level-2A Product Definition Document, S2PAD-VEGA... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue...). 2.4.2 MISSION Sentinel-2 mission is based on a twin satellite configuration (Initially Sentinel-2A and... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... format (TBC). 2.4.14 QUALITY INDICATORS Sentinel-2 products contain Quality Indicators (QIs... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... written permission from ESA. GSC Sentinel-2 PDGS Products Definition Document Issue... the Sentinel-2 products definition. It introduces the Sentinel-2 Level-0/1A/1B/1C/2A... one orbit General users Table 3-1 Sentinel-2 products main characteristics. ESA UNCLASSIFIED..., observation date, Orbit number, spacecraft (Sentinel-2A/B/…), Reception station, Downlink orbit, … Brief...: - Product level information o Spacecraft name (Sentinel-2A/B/…), o Processing Level (Level-0) o Pointer to...: - Product level information o Spacecraft name (Sentinel-2A/B/…), o Processing Level (Level-1A), o Image...: - Product level information o Spacecraft name (Sentinel-2A/B/…), o Processing Level (Level-1B), o Image...: - Product level information o Spacecraft name (Sentinel-2A/B/…), o Processing Level (Level-1C), ESA... influence of ozone absorption affecting Sentinel-2 measurements. Format ECMWF (European Centre... influence of ozone absorption affecting Sentinel-2 measurements. Format Sentinels format (TBC...



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June 2015 VV 05 Sentinel-2A LOGOTYPE LOGOTYPE COMPLET (SYMBOLE ET ...) TONS MONOCHROME 294C VV 05 Sentinel-2A FIFTH VEGA LAUNCH FROM THE... 2015, Arianespace will orbit the Sentinel-2A satellite - part of Europe's Copernicus... citizens. ESA's Sentinel programs comprise five satellite families: Sentinel-1, to provide continuity for radar data from ERS and Envisat; Sentinel-2 and Sentinel-3, dedicated to the observation... Earth and its oceans; and Sentinel-4 and Sentinel-5, dedicated to meteorology and... composition of the Earth's atmosphere. Sentinel-2A is the second satellite in... be launched by Arianespace, following Sentinel-1A, wich was launched by... Space Center on April 3, 2014. Sentinel-2A is an Earth and ocean... of Sentinel-2A. The satellite will weigh about 1,130 kg. at launch. Sentinel-2A... The Launch: > Mission VV05 > The Sentinel-2A satellite PAGE 1-2 Further information: > > > > > Vega... campaign operations Countdown and flight Sentinel-2A mission profile Arianespace & the Guiana... www.arianespace.com 1 VV 05 Sentinel-2A MISSION DESCRIPTION The fifth Vega... Center (CSG) will place the Sentinel-2A satellite on a Sun-synchronous orbit...., including 1,130 kg. for the Sentinel-2A satellite, which will be released... the Sentinel-2A satellite a minute after the engine is shut down. The Sentinel-2A... liftoff Vega payload Configuration The Sentinel-2A satellite was designed and built... (from liftoff to separation of Sentinel-2A) is 54 minutes and 43....arianespace.com 2 VV 05 Sentinel-2A THE Sentinel-2A SATELLITE Customer European Space Agency... www.arianespace.com 3 VV 05 Sentinel-2A THE VEGA LAUNCHER For more... www.arianespace.com 4 VV 05 Sentinel-2A VEGA CHARACTERISTICS Vega is a launch....com 5 VV 05 Sentinel-2A LAUNCH CAMPAIGN OPERATIONS: VEGA - Sentinel-2A Sentinel-2A and launch vehicle... P80 Arrival in Kourou of Sentinel-2A and beginning of preparation campaign..., 2015 Sentinel-2A mating on adaptor ACU June 08, 2015 Encapsulation Sentinel-2A in building S5 June 09, 2015 Completion of fairing preparation Sentinel-2A... activities Thursday, June 11, 2015 Sentinel-2A transfer form S5 to the... integration on the launcher with Sentinel-2A Launch vehicle activities Monday, June... www.arianespace.com 6 VV 05 Sentinel-2A COUNTDOWN AND FLIGHT The countdown... h 54 mn 43 s Separation of Sentinel-2A + 01 h 43 mn 35 s AVUM....arianespace.com 7 VV 05 Sentinel-2A MISSION PROFILE Sentinel-2A For more information, visit... www.arianespace.com 8 VV 05 Sentinel-2A ARIANESPACE AND THE GUIANA SPACE...



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... / Published: 25 October 2016 Abstract: Sentinel-2A MSI is the Landsat-like... to show the potential of Sentinel-2A MSI (MultiSpectral Instrument). Now that.... This paper aims at evaluating Sentinel-2A MSI band ratio products that... relevant for geological remote sensing. A Sentinel-2A MSI and a Landsat 8 OLI (Operational... Spain. The results obtained with Sentinel-2A MSI were compared with those... with Landsat 8 OLI and a simulated Sentinel-2A MSI dataset that was used... of the epithermal deposit. Keywords: Sentinel-2A MSI; Landsat 8 OLI; geology; alteration... are operational [2]. When combined, the Sentinel-2A MSI (MultiSpectral Instrument) and Landsat... approximately every three days [3]. The Sentinel-2A satellite was launched on 23... days later [4]. The potential of Sentinel-2A MSI encompasses a wide range of...], who compared the capabilities of Sentinel-2A MSI to the ASTER (Advanced... next-generation satellite sensors, including Sentinel-2A MSI, for mapping the iron.... They concluded that sensors like Sentinel-2A MSI are suitable for detection... [23] demonstrated the capabilities of Sentinel-2A MSI for geological remote sensing... the 0.9 µm iron absorption feature using Sentinel-2A MSI’s near-infrared (NIR) bands... Sentinel-2A MSI data. 1.0 Transmittance 0.8 1 0.6 2 3 4 5 6 7 8 9 ASTER 1 2 3 4 5 7 Landsat 7 0.4 1 2 3 4 5 9 6 7 10 11 12 Landsat 8 0.2 1 2 3 4 5 6 7 8a 9 Sentinel... positions and numbers of the Sentinel-2A MSI (MultiSpectral Instrument) spectral bands... the y-axis. Now that actual Sentinel-2A MSI data are available, several... to confirm the usability of Sentinel-2A MSI for geological remote sensing... a Sentinel-2A MSI L1C image, a Landsat 8 OLI L1T image and a simulated Sentinel-2A MSI... processed to surface reflectance. The Sentinel-2A MSI L1C dataset (12-bit... the 20 m resolution bands of Sentinel-2A MSI (see below). The resulting... Sentinel-2A MSI (leaving 269 × 135 pixels). Figure 3. True colour composite of Sentinel-2A... as a source for the simulated Sentinel-2A MSI dataset had originally a nominal... the lower resolutions of the Sentinel-2A MSI bands using spectral response... of Sentinel-2A MSI. In addition, Landsat 8 OLI band 5 (NIR) and Sentinel-2A MSI.... 2016, 8, 883 6 of 16 Table 2. Sentinel-2A MSI (MultiSpectral Instrument) and Landsat... range of Sentinel-2A MSI. Feature ASTER Landsat 5 TM Landsat 8 OLI Sentinel-2A MSI... for Sentinel-2A MSI and Landsat 8 OLI and 0–0.4 for the simulated Sentinel-2A MSI... alteration (TM 5/7, Landsat 8 OLI 6/7 and Sentinel-2A MSI 11/12), a combination that... general (TM 3/1, Landsat 8 OLI 4/2 and Sentinel-2A MSI 4/2), and a combination that highlights... specifically (TM 3/5, Landsat 8 OLI 4/6 and Sentinel-2A MSI 4/11). The correlation between... mineral alteration map obtained with Sentinel-2A MSI is compared with a published... S2A (Sentinel-2A MSI), LS8 (Landsat 8 OLI) and Sim (simulated Sentinel-2A MSI). Sentinel-2A MSI...)). The results of the simulated Sentinel-2A MSI dataset are only available... in Figure 5. The correlation between Sentinel-2A MSI and Landsat 8 OLI is... bottom-of-atmosphere Sentinel-2A MSI dataset and the simulated Sentinel-2A MSI dataset... simulated Sentinel-2A MSI data cube dating from 2004 (top), the Sentinel-2A MSI... with Landsat 8 OLI, Sentinel-2A MSI and a simulated Sentinel-2A MSI data cube. The... 3/5 are similar, while between the Sentinel-2A MSI and Landsat 8 OLI bottom... 1 (blue) of the atmospherically corrected Sentinel-2A MSI products (center-left and... composites of a simulated Sentinel-2A MSI data cube (top), Sentinel-2A MSI (centre) and... with Landsat 8 OLI, Sentinel-2A MSI and a simulated Sentinel-2A MSI data cube. The...-atmosphere reflectance products. Comparing the Sentinel-2A MSI band ratio product with... Figure 8. A colour composite made with Sentinel-2A MSI (A) consisting of band ratios... and a Sentinel-2A MSI scene acquired in 2016 and a simulated Sentinel-2A MSI scene... lake water quality parameters with Sentinel-2A MSI, concluded that the currently...,31] on initial results with Sentinel-2A MSI did not specifically mention... Sentinel-2A MSI or Landsat 8 OLI imagers in particular. We have compared Sentinel-2A... operational satellite sensors such as Sentinel-2A MSI and Landsat 8 OLI can... with the atmospheric correction of Sentinel-2A MSI or Landsat 8 OLI could... products demonstrate a good correspondence between Sentinel-2A MSI and Landsat 8 OLI VNIR... correlate favourably when ported to Sentinel-2A MSI. The resulting products are... repeatability and portability of the Sentinel-2A MSI and Landsat 8 OLI data... reflectance, Figure S3: Scatterplots of Sentinel-2A MSI bottom-of-atmosphere reflectance... reflectance, Figure S4: Scatterplots of Sentinel-2A MSI sen2cor v.2.2.1 against sen2cor v.2.0.6 bottom... reflectance, Figure S5: Scatterplots of Sentinel-2A MSI bottom-of-atmosphere reflectance... cube, Figure S6: Scatterplots of Sentinel-2A MSI bottom-of-atmosphere reflectance... reflectance, Figure S7: Scatterplots of Sentinel-2A MSI top-of-atmosphere reflectance... Roca (ESA) for providing the Sentinel-2A MSI spectral response functions used...



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SENTINEL SERIES MICRO-MATIC STUD DRIVER ... TITAN® SENTINEL® SERIES MICRO-MATIC STUD DRIVER WITH TORQUE CONTROL SENTINEL-2 TORQUE CONTROLLED STUD DRIVER THE TITAN SENTINEL® SERIES The TITAN SENTINEL.... Its micro-design enables the SENTINEL SERIES to be used on... the ability to use the SENTINEL SERIES rather than reversing type... automatic stud drivers. Internally, the SENTINEL SERIES is the culmination of... FOR EASY MAINTENANCE The TITAN SENTINEL incorporates a unique cartridge design. By... is flush with part). The SENTINEL EL is designed to drive... this moment, and, because the SENTINEL is self-opening, it is... LOADING AND UNLOADING CYCLES TITAN SENTINEL SERIES AUTOMATIC stud drivers incorporate... grip on stud. POWER SOURCE SENTINEL SERIES stud drivers are adaptable... wrenches Recommended RPM: 500 The SENTINEL SERIES is ideal for use.... WHAT ABOUT TOOL MAINTENANCE? Titan SENTINEL SERIES stud drivers are easy... TITAN SENTINEL® SERIES FIGURE 1 FIGURE 2 FIGURE 3 I J B K C T P A* M E* U Q R F* X V W S N PHYSICAL DIMENSIONS FOR SENTINEL-1, 2, AND 2A SENTINEL -1 SENTINEL -2 SENTINEL -2A SENTINEL -1 SENTINEL -2 SENTINEL -2A Dimensions...: SENTINEL-1 1.30 lbs. SENTINEL-2 1.90 lbs. SENTINEL-2A 2.95 lbs. THE TITAN SENTINEL® SERIES FIGURE 1: SENTINEL... due to diameter restrictions, the SENTINEL may be run less Posi... ENGAGEMENT FOR SENTINEL-1, 2 AND 2A STUD SIZES W THREAD GRIP MILLIMETERS SENTINEL-1 X TOTAL STUD ENGAGEMENT WITH POSI-LOAD SENTINEL-2 AND SENTINEL-2A INCHES...-LOAD SENTINEL® SERIES MICRO-MATIC STUD DRIVER SENTINEL ORDERING INFORMATION TOOL SIZE SENTINEL-1 SENTINEL-2 SENTINEL-2A... being driven to 7NM Specify: SENTINEL-1, M6 x 1.00, Medium, 1/2” square. B. M10... be driven to 20NM Specify SENTINEL-2, M10 x 1.50, Heavy, 1/2” square. C. 7/16... to 39 foot llbs. Specify SENTINEL-2A, 7/16”-14, Heavy, 1/2” square. • Always...



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.../Tile PDI XSD Schemas ................................................................................................ 67 Sentinel-2 Products Specification Document 3.4.4 3.5 3.5.1 3.5.2 3.5.3 3.5.4 3.6 3.6.1 3.6.2 3.6.3 3.6.4 3.7 3.7.1 3.7.2 3.7.3 3.7.4 3.8 3.8.1 3.8.2 3.8.3 3.8.4 3.9 3.9.1 3.9.2 3.9.3 3.9.4 3.10 3.10... FOR GIPP FILES DEFINITION ............................................................................................. 284 Sentinel-2 Products Specification Document 3.14.1 3.15... PRODUCT SPECIFICATION ............................................................................. 381 Introduction ............................................................................................................................. 381 Sentinel-2 Products Specification Document 4.8.2 4.8.3 4.8.4 4.8.5 4.8.6 4.8.7 4.8.8 4.9 4.9.1 4.9.2 4.9.3 4.9.4 4.9.5 4.9.6 4.9.7 4.9.8 4.9.9 4.10 REF... A USER DEFINED AREA-OFINTEREST ................................................................................................................................................. 29 Sentinel-2 Products Specification Document REF : S2... TABLE 2-1: SENTINEL-2 PRODUCT LEVELS AND MAIN CHARACTERISTICS ...................................................... 44 TABLE 2-2: SENTINEL-2 PRODUCT TIMELINESS... TABLE 3-4: GIPP FILE TYPE ............................................................................................................................ 52 Sentinel-2 Products Specification Document REF : S2... DEFINITION FOR SAD ................................................................................................... 293 TABLE 4-1: SENTINEL-2 PRODUCTS PHYSICAL FORMAT .............................................................................. 298 TABLE... Title Sentinel Standard Archive Format for 11/06/2012 Europe (sentinel safe...-0001 4.0 03/07/2012 Sentinel 2 MSI – Level 2A products definition EOFFSPDGS GMES...]. 1.7.1 Mission Sentinel-2 Mission is based on a twin satellite configuration (Sentinel-2A and 2B... orbital revolution of one given Sentinel-2 spacecraft. Sentinel-2 Products Specification Document REF... not cover the Level-2A product specifications. Sentinel-2 Products Specification Document REF... 1B S2MSI1C 1C S2MSI2Ap 2A Outline Description Sentinel-2 spacecraft Housekeeping telemetry in... after data sensing. Table 2-2: Sentinel-2 Product Timeliness Sentinel-2 Products Specification Document REF... bands (from GIPP data) Multi_Spectral_Registration N N Y Y § 5.5.1 § 6.4.1 § 7.4.1 § 8.4.1 § 5.5.1 § 6.4.1 § 7.4.1 § 7.4.1 § 8.4.1 § 7.4.1 § 8.4.1 Sentinel-2 Products Specification Document REF : S2... to a default value 00000000 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... Metatada Level Brief SPACECRAFT_NAME Sentinel-2 Spacecraft name: Sentinel-2A, Sentinel-2B DATATAKE_TYPE MSI operation... 0..1 Sentinel Sequence identifier of the platform among the mission string enum 0..1 2A... 0..1 Sentinel Sequence identifier of the platform among the mission string enum 0..1 2A... at product level SPACECRAFT_NAME Sentinel-2 Spacecraft name: Sentinel-2A, Sentinel-2B DATATAKE_TYPE MSI operation... a default value 0000-0000 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... § 7.3.1.3 Standard § 7.3.1.2 Standard Expertise Expertise Standard § 7.3.1.2 § 7.3.1.3 § 7.3.1.3 § 7.3.1.2 Sentinel-2 Products Specification Document Time_Stamp/LINE_PERIOD... 0..1 Sentinel Sequence identifier of the platform among the mission string enum 0..1 2A... platform among the mission 0..1 Sentinel string enum 0..1 2A, 2B, 2C instrument->familyName... 0000-0000 string enum 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... = MMM_CCCC_TTTTTTTTTT_ = _ _ _ File Template Name: S2__OPER_AUX_ECMWFD_PDMC_YYYYMMDDTHHMMSS_VYYYYMMDDTHHMMSS_YYYYMMDDTHHMMSS Sentinel-2 Products Specification Document REF : S2... product metadata. Table 4-1: Sentinel-2 Products Physical Format Sentinel-2 Products Specification Document REF... extent. L0/L1A/L1B : N/A Sentinel-2 Spacecraft name: Sentinel-2A Sentinel-2B X X Datatake/DATATAKE_TYPE MSI...: AVG(DEGRADED_MSI_DATA_PERCENTAGE)% Quality_Indicators_Info/Technical_Quality_Assessment_Inspections [PDD] § 5.5.1 § 5.5.1 Sentinel-2 Products Specification Document Field Name... the instrument string enum 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... value 00000000 string enum 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... value 00000000 string enum 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... specification Sentinel-2 PDGS will provide anonymous internet on-line access to Sentinel....gml S2A_OPER_MSK_NODATA_CGS1_00000000T000000_S20091211T165928_D07_B05_MSIL1A.gml S2A_OPER_MSK_SATURA_CGS1_00000000T000000_S20091211T165928_D07_B05_MSIL1A.gml Sentinel-2 Products Specification Document REF : S2....gml S2A_OPER_MSK_TECQUA_CGS1_00000000T000000_S20091211T165928_D07_B11_MSIL1A.gml S2A_OPER_MSK_CLOLOW_CGS1_00000000T000000_S20091211T165928_D07_B12_MSIL1A.gml Sentinel-2 Products Specification Document REF : S2....gml S2A_OPER_MSK_SATURA_CGS1_00000000T000000_S20091211T165928_D07_B12_MSIL1A.gml S2A_OPER_MSK_TECQUA_CGS1_00000000T000000_S20091211T165928_D07_B12_MSIL1A.gml Sentinel-2 Products Specification Document REF : S2...



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... 4.2.4 Update of missions availability (SMOS, Sentinel-2, Sentinel-3, OceanSat-2, RISAT) 15/01/2016.............................................................................................................. 14 3.2 Copernicus Dedicated Sentinel Missions ....................................................................... 14 3.2.1 Sentinel-1 ....................................................................................................................... 14 3.2.2 Sentinel-2 ...................................................................................................................... 14 3.2.3 Sentinel-3 ...................................................................................................................... 15 3.3 Copernicus Contributing... of ESA-User Licence ........................................................... 73 7.3.1 Sentinel data access ....................................................................................................... 73 7.3.2 ESA and... HR_IMAGE_2015 D D D D D V - VHR_IMAGE_2015 D D D D D V V HR1/HR2_OPT_ GLOBAL (Sentinel-2) D D D D D D D MR_IMAGE_2015 D D D - D - - MR_OPT_GLOBAL D D D D D - - LR_OPT_GLOBAL D D D D D D D D D D D D D D D D D D D D HR2-MR1_SAR_Sea_Ice... D D D D D D V VHR1-2_ Urban_Atlas_2012 D D D D D V V D - - HR2MR1_SAR_GLOBAL (Sentinel-1) LR_SAR_GLOBAL (Sentinel-1) 1 D CORE Datasets from previous phases... eligible Copernicus users. In parallel, Sentinel-1, Sentinel-2 and Sentinel-3 missions , developed by ESA... 4m =300m 3.2 Copernicus Dedicated Sentinel Missions 3.2.1 Sentinel-1 Sentinel-1 was the first of the.... Sentinel-1A is in routine phase since June 2015 while Sentinel-1B... is planned by end 2016. Sentinel-1 predefined observation scenario supporting Copernicus... https://sentinels.copernicus.eu/web/sentinel/missions/sentinel-1/observationscenario. Data processing is... after IOCR planned midSeptember 2016. 3.2.2 Sentinel-2 Sentinel-2 comprises a constellation of two Land... 2 satellites. Sentinel-2A was launched on 23rd June 2015 and Sentinel-2B is... ESA UNCLASSIFIED - For Official Use Sentinel-2 Mission Planning activities are routinely... https://sentinels.copernicus.eu/web/sentinel/missions/sentinel-2/acquisition-plans with detailed... sensing. Sentinel-2 contributes to HR1/HR2_OPTICAL_GLOBAL and HR_IMAGE_2015/2018 datasets. 3.2.3 Sentinel-3 Sentinel-3 is..., environmental monitoring and climate monitoring. Sentinel-3A was launched on 16... observation services. Sentinel-3B is scheduled for launch in 2017. Sentinel-3 observation...://sentinels.copernicus.eu/web/sentinel/user-guides/sentinel-3-olci/coverage. 3.3 Copernicus Contributing...-1/2 ERS-1/2 Dubaisat-2 Landsat-5 Landsat-7 Landsat-8 Sentinel-3 * ODIN Envisat Kompsat-5* GeoEye-1 PERSEUS...-1, ResourceSat-2 Sentinel-1 KHALIFASAT SPOT-4, SPOT-5, SPOT-6-7 TerraSAR-X, TanDEM-X Kompsat-2* Sentinel-2 Kompsat-3* TH... Systematic Sentinel-2/-3 data supply MR_IMAGE_2015 MR_IMAGE_2018 Missions Spot-5, Resourcesat-2 Sentinel-2A Systematic Sentinel-2 PleiadesA... procured Resourcesat-2 HR1/HR2_OPT_GLOBAL Systematic Sentinel-2 data supply MR_OPT_GLOBAL Optical MR2... HR2-MR1_SAR_GLOBAL Systematic Sentinel-1 data supply LR_SAR_GLOBAL Systematic Sentinel-1 data supply HR2...-Oct 2015 310 LUZ Systematic Sentinel-1 data supply, complemented by Radarsat... meet EFFIS requirements. SPOT-5, Resourcesat-2, Sentinel-2A SPOT-5, HRVIR, 10m Resourcesat-2, LISS... - For Official Use Product Quality Sentinel-2:  Product quality is evolving along...://sentinels.copernicus.eu/web/sentinel/missions/sentinel-2/dataquality-report Surface Area of... 3.2). Upon selection by CSP, the Sentinel-2 contributions to the coverages will... coverage MG2: high resolution Optical SENTINEL-2A Spatial resolution: HR1, HR2 Spectral... water bodies all closed seas Sentinel-2A coverage frequency is 10 days...://earth.esa.int/web/sentinel/missions/sentinel-2/operations-ramp-upphase Acquisition scenario....esa.int/web/sentinel/missions/sentinel-2/acquisition-plans The Sentinel-2 product quality is... is accessible at https://sentinel.esa.int/web/sentinel/user-guides/document... high to medium resolution SAR SENTINEL-1 Area of interest Acquisition windows... 248 300km² non-contiguous AOI Sentinel-1 coverage frequency over land depends... https://sentinels.copernicus.eu/web/sentinel/missions/sentinel-1/observationscenario Absolute Radiometric Accuracy... and weather forecast models. MG1/Sentinel-1A, Radarsat-2, COSMO-SkyMed, TerraSAR...) - C band : Sentinel-1A, Radarsat-2 - X band : COSMO-SkyMed, TerraSAR-X - Single/Dual SENTINEL- 1: - Interferometric... COSMO-SkyMed: 6030 products Systematic Sentinel-1 daily coverage over sea ice...: within 12 hours (6 hours average) Sentinel- 1 NRT3h over Baltic, Eurarctic, Greenland... (TerraSAR-X) - Int_Org_NGO: DISCOVERY - Public: DISCOVERY Sentinel-1 data: DOWNLOAD for all Copernicus... Yes 6.5 m, 5m* Yes 5.8 m Yes Resourcesat1/2 Sentinel-2 VNIR VNIR 10 m Yes TIANHUI... and Optical Standard Rush TERRASAR-X Sentinel-1 18.5 m 20 m Kompsat-5* Kompsat-5* 20...-DMC 2 / Landsat-5 Landsat-7 Landsat-8 Proba Sentinel-2 Bands VNIR, SWIR VNIR, SWIR...



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.../2015 Issue 1 Rev 2 SENTINEL-2 User Handbook Title Sentinel -2 User Handbook Issue Author... ........................................................................................................20 1.6.1.1.1 Sentinel Mission Data Acquisition and NRT production .................................................. 21 1.6.1.1.2 Sentinel Collaborative Data Products ............................................................................... 22 1.6.1.1.3 Sentinel Data Product Dissemination.../2015 Issue 1 Rev 2 SENTINEL-2 User Handbook 1.14.3.1Level-2A Data Naming Convention... 1.18 Document Library ...................................................................................................................... 64 1.18.1 Sentinel-2A Spectral Responses ............................................................................................... 64 1.18.2Sentinel... 1: Comparison of SENTINEL-2 with important heritage missions......................................... 35 Table 2: Sentinel-2 Product types... 7: Sentinel complementary Calibration/Validation activities....................................... 26 Figure 8: Agreement Process ................................................................................................... 27 Figure 9: SENTINEL.../2015 Issue 1 Rev 2 SENTINEL-2 User Handbook Figure 18: Sentinel-2 10 m Spatial Resolution...: Modelled Sentinel-2 Coverage ............................................................................... 55 Figure 22: Modelled Sentinel-2 Coverage ............................................................................... 56 Figure 23: Sentinel... Issue 1 Rev 2 SENTINEL-2 User Handbook 1 INTRODUCTION The full SENTINEL-2 mission comprises twin.../2015 Issue 1 Rev 2 SENTINEL-2 User Handbook 1.1 Overview SENTINEL-2 is a European wide-swath... Issue 1 Rev 2 SENTINEL-2 User Handbook 1.1.2 Related Content: The SENTINEL-2 System Page 10... 1 Rev 2 SENTINEL-2 User Handbook Narrowing the width of the SENTINEL-2 spectral bands... 1 Rev 2 SENTINEL-2 User Handbook 1.3 Thematic Areas and Services The SENTINEL-2 mission requirements... 1 Rev 2 SENTINEL-2 User Handbook 1.4 Mission Objectives The objectives for SENTINEL-2 are set out in the Mission Requirements Document. SENTINEL-2 mission... 1 Rev 2 SENTINEL-2 User Handbook 1.5 Satellite Description Each of the SENTINEL-2 satellites weighs... data complementing the SENTINEL missions. 1.6.1 Collaborative Ground Segment The SENTINEL collaborative ground... processing and distribution for SENTINEL-1 and/or SENTINEL-2. Elaboration of (NRT) products... validation activities. 1.6.1.1.1 Sentinel Mission Data Acquisition and NRT production SENTINEL data acquisition... 1 Rev 2 SENTINEL-2 User Handbook Ship Detection 1.6.1.1.2 Oil Spill monitoring Sentinel Collaborative Data.../07/2015 Issue 1 Rev 2 SENTINEL-2 User Handbook 1.6.1.1.3 Sentinel Data Product Dissemination and... 1 Rev 2 SENTINEL-2 User Handbook 1.6.2 Core Ground Segment (CGS) The SENTINEL core ground segment allows all SENTINEL data to be.../2015 Issue 1 Rev 2 SENTINEL-2 User Handbook Figure 9: SENTINEL-2 Receiving Stations and Off... 1 Rev 2 SENTINEL-2 User Handbook 1 SENTINEL-2 MSI USER GUIDE 1.7 Introduction The SENTINEL-2 User Guide... steps from Level-0 to Level-2A of SENTINEL-2 products. Resolutions Defines the... to interrogate SENTINEL-2 Level-1B, Level-1C and Level-2A products. Definitions... of SENTINEL-2 products. For an in-depth description of the SENTINEL-2 mission.../2015 Issue 1 Rev 2 SENTINEL-2 User Handbook 1.9 Applications The SENTINEL-2 mission requirements for... Issue 1 Rev 2 SENTINEL-2 User Handbook 1.10 Product Types Sentinel-2 products available for... by the Sentinel-2 Toolbox) are listed in Table 2. Table 2: Sentinel-2 Product types... of Sentinel-2 up to Level-1C. The continuous acquisition of Sentinel-2 image.... Level-2A generation can be performed by the user through the Sentinel...). Level-2A products are generated on user side through the Sentinel-2 Toolbox... Issue 1 Rev 2 SENTINEL-2 User Handbook 1.12 Resolutions The Sentinel-2 instrument provides measurements... (nm) (W m−2 sr−1 μm−1) SENTINEL-2 User Handbook 1.13 Revisit & Coverage The Sentinel-2 mission will... Issue 1 Rev 2 SENTINEL-2 User Handbook Figure 22: Modelled Sentinel-2 Coverage With two... 1 Rev 2 SENTINEL-2 User Handbook 1.14 Product Naming Convention The Sentinel-2 products will...-generated product 2A is the processing level 1.15 Data Formats Sentinel-2 products will be made available to users in SENTINEL-SAFE... to represent all levels of SENTINEL products. A Sentinel-2 product refers to a directory... to SENTINEL-SAFE format). 1.15.1 LEVEL-2A Data Format The Level-2A prototype... on LEVEL-2A format can be found in the SENTINEL-2 Technical Guide. 1.16 Software Tools A SENTINEL-2 Toolbox is... Issue 1 Rev 2 SENTINEL-2 User Handbook 1.18 Document Library 1.18.1 Sentinel-2A Spectral Responses...



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... OF T HE DOCUMENT ....................................................................................... 42 THE SENTINEL-2 MISSION USER PRODUCTS ARE: LEVEL... T HIS DOCUMENT ..................................................................................... 45 ACRONYM S ............................................................................................................... 46 SENTINEL -2 MISSION O VERVIEW .................................................................................. 48 FIGURE 1: MSI...-DETECTOR/INTERBAND PARALLAX ANGLES ..................................................................................................... 49 1.7 SENTINEL -2 PRODUCT OVERVIEW ................................................................................ 51 THE USER... RELATED TO DATA FORMATS. .............................................................................................. 53 2. SENTINEL-2 PRODUCT DEFI NITIONS............................................................................. 54 2.1 2.2 ORBIT... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document 4.7.3 4.7.4 4.7.5 4.7.6 REF : S2... description of the Sentinel-2 Mission and User Products characteristics. Sentinel-2 Product Definitions, provides terms and concepts used for the Sentinel-2 User... Title Sentinel Standard Archive Format for 26/06/2014 Europe (sentinel safe...-0001 4.1 20/09/2012 Sentinel 2 MSI – Level 2A products definition EOFFSPDGS GMES.../2015 PAGE : 48 / 496 1.6 Sentinel-2 Mission Overview Sentinel-2 Mission is an European earth polar-orbiting satellite constellation (Sentinel-2A...  Sentinel-2 calibration and validation users  International partners with granted access to Sentinel... PAGE : 51 / 496 1.7 Sentinel-2 Product Overview The Sentinel-2 User Product is defined... duration of the mission. Sentinel-2A and Sentinel-2B will be in the... the Level-2A product specifications. This table outlines the Sentinel-2 User Products... 1B S2MSI1C 1C S2MSI2Ap 2A Outline Description Sentinel-2 spacecraft Housekeeping telemetry in... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Archiving_Info Processing_Specific_Parameters... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Lost_Source_Packet_List ANC_DATA_REF... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Geometric_Header/Incidence_Angles... mode of the instrument 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... e Description SPACECRA FT_NA ME Sentinel-2 Spacecraft name: Sentinel-2A, Sentinel-2B MSI operation mode... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Satellite_Ancillary_Data_Info Field... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Satellite_Ancillary_Data_Info Field... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Satellite_Ancillary_Data_Info Field... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Satellite_Ancillary_Data_Info Field... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Satellite_Ancillary_Data_Info Field... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Satellite_Ancillary_Data_Info Field... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Satellite_Ancillary_Data_Info Field... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document Satellite_Ancillary_Data_Info Field... 0..1 Sentinel Sequence identifier of the string enum platform among the mission 0..1 2A..., 2015, Thales Alenia Space Expertise Sentinel-2 Products Specification Document Processing_Specific_Parameters/ PROCESSING_SPECIFIC_PARAMETERS... mode of the instrument 1 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum.../Datastrip_Tim e_Info Field Nam e Sentinel-2 Spacecraft name: Sentinel-2A, Sentinel-2B MSI operation mode... Alenia Space Metatada Level Brief Sentinel-2 Products Specification Document ABSOLUTE_CALIBRATION_ACCURACY CROSS_BAND_CALIBRATION_ACCURACY... of the instrument name 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... Brief Brief Brief Metadata Level Sentinel-2 Products Specification Document Noise_Model ABSOLUTE_CALIBRATION_ACCURACY... 0..1 Sentinel Sequence identifier of the string enum platform among the mission 0..1 2A... instrument name 1 string enum 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... extent. L0/L1A/L1B : N/A Sentinel-2 Spacecraft name: Sentinel-2A Sentinel-2B Datatake/SPA CECRAFT_NA... the instrument 1 string enum 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... reserved, 2015, Thales Alenia Space Sentinel-2 Products Specification Document metadataComponents metadataComponentSchemas... the instrument string enum 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... the instrument string enum 0..1 Sentinel string enum 0..1 2A, 2B, 2C string enum... specification Sentinel-2 PDGS will provide anonymous internet on-line access to Sentinel...



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... resolution, respectively. Results show that Sentinel-2 performs consistently on both aspects... a large range of applications. Keywords: Sentinel-2; Landsat-8; SPOT-5; sub-pixel detection... are available from March 2013; Sentinel-2A acquisitions are available from end... jointly used to characterize the Sentinel-2 performances for specific object detection... resolution of Sentinel-2 includes a comparison with SPOT-5 and Landsat-8 because Sentinel-2 aims... [13]. 2. Methodology This study assesses Sentinel-2’s ability to detect structuring landscape..., the actual spatial resolution of Sentinel-2 is characterized by estimating its... spatial resolution (m) of the corresponding Sentinel-2 MSI, Landsat-8 OLI and SPOT... considered classes derived from the Sentinel-2 image acquired on 1 January 2015... where the SPOT-5, Landsat-8 and Sentinel-2 images overlap (Section 3). They were...–Cadmium–Telluride detectors [71]. For Sentinel-2, ten monolithic CMOS detector are... first Red-edge band for Sentinel-2. 2.3. Potential for Object Detection A spatial... 0 x (m ) 20 (b) −20 10 20 (c) Figure 6. (a) Sentinel-2 10 m PSF; (b) example of simulated... early October soon after the Sentinel-2 and Landsat-8 images acquisitions, respectively... 5620000 5560000 Extent Country Landsat-8 Sentinel-2A Spot5 (Take5) Zoom 480000 SPOT... 5583500 5583450 5583450 5583500 5583550 Sentinel-2A - 01/10/2015 100 Meters... of an orthophoto (25 cm), Sentinel-2A (10 m), SPOT-5 (Take 5) (10 m) and... [77]. The Sen2Cor algorithm uses Sentinel-2 bands for atmospheric corrections whereas... of Foreground/Background Pairs with Sentinel-2 The discrimination power, S, of each... marks cases for which only Sentinel-2 succeeded in discriminating the foreground... show the better performance of Sentinel-2. Crosses indicate that the discrimination... show the better performance of Sentinel-2. Crosses indicate that the discrimination... equivalent indices, results highlight that Sentinel-2 generally outperforms SPOT-5 in mixed... SPOT-5 is systematically better than Sentinel-2. Other noticeable differences include the... one of Sentinel-2 with pairs including a bare soil background, while Sentinel-2’s Blue... main difference between Landsat-8 and Sentinel-2 spectral discrimination power is observed... with Sentinel-2. On average, the discrimination power increased relatively more with Sentinel...] FWHM [m] SD [m] SNR Landsat-8 SPOT-5 Sentinel-2 Sentinel-2 Sentinel-2 Band 3 Band 2 Band 4 Band 5 Band... assessments were combined to investigate Sentinel-2’s potential for detecting landscape features... 15 12 Sentinel-2 Red-Edge (20 m) Prop LC LB CO Sentinel-2 SWIR... above, Landsat-8 performs similarly to Sentinel-2 (10 m) when considering the spectral... object detection, Landsat-8 only outperforms Sentinel-2 in one case, Grassland/Maize... in favour of Sentinel-2 (15.7 m for Landsat-8 vs. 8.1 m for Sentinel-2). Against SPOT... size of Sentinel-2 is also better than SPOT-5 (7 m for Sentinel-2 vs. 10... objects which have similar results, Sentinel-2 reveals a good potential to detect... assessed the potential performances of Sentinel-2’s resolution for small landscape feature.... However, the analysis showed that Sentinel-2 outperformed the other sensors for... resolutions, the overall performance of Sentinel-2 for small landscape feature detection... performances of Sentinel-2 indices compared to Landsat-8 indices suggest that Sentinel-2 should... satellite viewing angle [84]. Although Sentinel-2 captures nadir view, the viewing... This study analysed pre-operational Sentinel-2 images to rigorously evaluate their...-8 and SPOT-5. Results confirm that Sentinel-2 data actually combine the spectral... detected with Sentinel-2. Conversely, with the large spectral resolution of Sentinel-2, it.... Together with Sentinel-2’s 10-day revisiting period (5 days with Sentinel-2B to... the use of Sentinel-2 data for monitoring natural resources. Sentinel-2 offers new... Agriculture Policy becomes feasible. Similarly, Sentinel-2 should also detect narrow continuous..., M. Sentinels for science: Potential of Sentinel-1, -2, and -3 missions for scientific observations..., B.; Isola, C.; Laberinti, P.; Martimort, P.; et al. Sentinel-2: ESA’s optical high-resolution mission..., W.; Li, X. Water bodies’ mapping from sentinel-2 imagery with modified normalized difference..., M.; Vuolo, F.; Atzberger, C. First experience with sentinel-2 data for crop and tree... biophysical parameter retrieval: Opportunities for Sentinel-2 and-3. Remote Sens. Environ. 2012..., J.; Verrelst, J.; Alonso, L.; Moreno, J. Evaluation of sentinel-2 red-edge bands for empirical..., O.; Rouget, M. Examining the potential of Sentinel-2 MSI spectral resolution in quantifying.... 2012, 39, 519–523. Communications, E. Sentinel-2 ESA’s Optical High-Resolution Mission.... Wulf, H.; Stuhler, S. Sentinel-2: Land Cover, Preliminary User Feedback on Sentinel-2A Data. In Proceedings of the Sentinel-2A Expert Users.... 2012, 122, 11–21. Fletcher, K. Sentinel-2: ESA’s Optical High-Resolution Mission...: Namur, Belgium, 2010. GmbH, T.V.D. Sentinel-2 MSI—Level-2A Prototype Processor Installation and...



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... urban land cover mapping using Sentinel-1A images with KTH-SEG... - 2 .................................................. 83 Synergies of Sentinel-1A SAR and Sentinel-2A MSI Data for Urban... Land Surface Temperature using simulated Sentinel-2 imagery .............................................................................. 112 Thermal Infra-Red... to evaluate multi temporal Sentinel-1A SAR and Sentinel-2A MSI data for... as study areas. Sentinel-1A SAR and Sentinel-2A optical data will be... services demonstrator using multitemporal Sentinel-1A SAR and Sentinel-2A MSI data. The... of the capacity of Sentinel-1A SAR and Sentinel-2A optical data for... urban land cover mapping using Sentinel-1A images with KTH-SEG... evaluate multitemporal Sentinel-1A images for urban land cover mapping. Sentinel 1A...-1/2 SAR, operates in C-band. Multitemporal Sentinel-1A data acquired over Beijing...). It is anticipated that multitemporal Sentinel-1A data could produce urban... quantity and variability in the Sentinel-1A images used for the... from other satellite data (SAR, Sentinel …) could be used, for example... been performed using RADARSAT-2, TerraSAR-X, Sentinel-1 and COSMO-SkyMed SAR data... Sensing - 2 Synergies of Sentinel-1A SAR and Sentinel-2A MSI Data for Urban... of novel ESA Sentinel-1A C-band SAR and Sentinel-2A MSI data for... and 20m provided by the Sentinel satellites introduce a new relevant spatial... hinterlands. The fusion of Sentinel-1A/-2A data is anticipated to facilitate... of Sentinel-1A SAR in Interferometric Wide Swath mode and simulated Sentinel-2A... last pre-processing step, the Sentinel-1 and 2 images will be co... and SWIR bands of the Sentinel-2A image will be used in... the potential combination with future Sentinel 2 mission can be considered a good... in preparation for the upcoming Sentinel-2 and time series. Also LIDAR... Land Surface Temperature using simulated Sentinel-2 imagery Juan Manuel Sánchez1, Mar... the fine spatial resolution of Sentinel-2 (10-20 m). With this aim... 5 days, accomplishing Sentinel-2 features at this point. These simulated Sentinel-2 images will... LST heterogeneity when applied to Sentinel-2. Concurrent Landsat overpasses will be... for the future exploitation of Sentinel-3 LST data since there will... time-series data produced by Sentinel-2, Venus, and other new sensor... from satellites like Landsat and Sentinel-2 demand new and computationally efficient...