Спутник ДЗЗ. Sentinel 1A. [Редактировать]

Европейский спутник дистанционного зондирования Земли, который входит в ОГ КА по глобальному мониторингу окружающей среды и безопасности “Copernicus” (предыдущее название GMES) . Разработан “Thales Alenia Space”, которая отвечала за проектирование, разработку и интеграцию аппарата. На борту изделия “Sentinel 1” установлена РЛС с синтезированной апертурой/C-SAR (разработана компанией  “Astrium”), которая обеспечит всепогодную  поставку космических снимков. Съемка будет выполняться в С-диапазоне (длина волны 6 см). После обработки данных в некоторых режимах пространственное разрешение достигнет 1х1 м.
Космический аппарат базируется на платформе Thales Aliena Space PRIMA. Стабилизация аппарата на орбите осуществляется по трем осям с точностью 0.01º. Точность определения положения орбите 10м (по каждому направлению, 3σ). Конструкция аппарата имеет тип параллелепипеда. Центральная часть аппарата выполнена из алюминия с центральной структурой из укрепленной углеволокном пластмассы. При конструировании использовался модульный подход, который позволил производить отдельную интеграцию и тестирование полезной нагрузки, перед интеграцией с платформой аппарата. Конструктивно платформа PRIMA включает три главных модуля, которые функционально разъединены, чтобы допустить параллельную интеграцию модулей.

Модули платформы:

  • SVM (обслуживающий модуль) - несет все обслуживающие системы кроме двигательных установок.
  • PPM (двигательный модуль), несет все системы коррекции орбиты.
  • PLM (модуль полезной нагрузки), несет все оборудование полезного груза включая антенну радиолокационного наблюдения Земли.

Основные системы аппарата:

  • TCS (подсистема терморегулирования). TCS обеспечивает управление за температурными режимами работы аппарата. В целом TCS пассивен, перераспределение тепла осуществляется путем покачивания теплоносителя по трубопроводам через радиаторы и систему многослойной изоляции. Также на борту расположены нагревательные элементы.
  • EPS (подсистема энергопитания). EPS использует две солнечные батареи для производства электроэнергии. Каждая батарея состоит из 5 элементов на основе GaAs элементов. На конец срока активного существования система позволит генерировать 4.8 кВт энергии. Литиево-ионный аккумулятор имеет вместимость 324 ампер часов. PCDU (система распределения энергопитания) разработана, чтобы обеспечивать защиту электрической системы и эффективное распределение электроэнергии. 
  • AVS (авиационная подсистема). AVS выполняет функции обработки и управления положением аппарата на орбите. Конструктивно представляет собой интегрированное решение, которое выполняет контроль за платформой и полезной нагрузкой.
  • PDHT (система обработки и передачи научных данных). Состоит из систем передачи телеметрии, системы антенн и системы хранения информации. Система передачи двуканальная. Работает в X -диапазоне.
  • PRP (двигательная установка). Состоит из  14 ускорителей расположенных на 4-х сторонах аппарата. Одна из групп ускорителей предназначен исключительно для работы в защищенном режиме.
  • RF. Обеспечивает  передачу команд и телеметрии в S-диапазоне. Система поддерживает шифрование команд.
  • Лазерный коммуникационный комплекс. Должен передавать данные на систему ретрансляции ERDS. Работает по направлению НОО-ГСО. Использует LCT (Лазерный Коммуникационный Терминал) производства Tesat-Spacecom (Backnang, Германия). LCT основан на основе разработок подобного устройства для системы (TerraSAR-X). Мощность передатчика 2.2 Вт. Апертура телескопа 135-миллиметров. Планируется, что данное решение будет типовым. Скорость передачи данных системой составит около 2.8 Гбит/с (1.8 Гбит/с скорость передачи полезной информации).   

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
139634НайтиНайти

Дополнительная классификация

#Наименования
1Страна оператор(владелец) - Европа
2Страна производитель - Франция
3Тип оператора(владельца) - государственный
4Тип орбиты - НОО
5Радиолокационные спутники ДЗЗ
6Все спутники ДЗЗ

Новостная лента[Найти информацию в новостях] [Найти информацию в документах]

#Новостная лента.
12014-10-06. Европейский радар дистанционного наблюдения Земли прошел этап летной отработки и теперь его данные доступны в открытом доступе.Тэги: Sentinel 1A
22015-08-06. ЕКА провело сотое тестирование системы лазерной связи.
Европейское космическое агентство 5 августа провело сотое успешное тестирование высокоскоростной лазерной линий связи между своим радарным спутником наблюдения Земли Sentinel-1A (находится на НОО) и спутником AlphaSat (находится на ГСО). В целом тесты подтвердили правильность выбранной технологии передачи данных. На организацию канала связи пропускной способностью 1.8 Гбит в сек. ушло только 1.1 ватт энергии. Расстояние между КА составило около 48 тыс. км. При этом, при тестирование показало, что канал связи способен существовать как минимум 10 минут и, что особенно важно, не искажать передаваемую информацию. Таким образом, у организаторов проекта, осталась только одна проблема связанная с задержками с запуском новых КА, оснащенных лазерными терминалами.Тэги: Серия EDRSAirbus GroupSentinel 1AЕвропейское космическое агентство
32015-11-28. НАСА пытается найти замену радару космического аппарата SMAP.
Ученые из НАСА приступили к анализу возможности замены информации которую они планировали получать со своего космического аппарата SMAP при помощи данных орбитальной группировки Copernicus. При этом, из всего перечня космических аппаратов группировки исследователей наиболее заинтересовали возможности радара космического аппарата Sentinel 1A. При этом, с точки зрения НАСА данный космический аппарат наиболее пригоден для замены вышедшего из строя радара космического аппарата SMAP поскольку его орбита и возможности наиболее близки к желаемой. Вместе с тем, пока что НАСА так и не обнародовала данные о причинах выхода из строя своего аппарата. Тэги: Серия CopernicusSoil Moisture Active and PassiveSentinel 1A
42016-08-31. ЕКА определилось с причиной падения мощности на космическом аппарате Sentinel-1A.
Инженеры Европейского космического агентства при помощи наблюдений с Земли и данных с установленных на борту космического аппарата Sentinel 1A камер определили, что причиной падения мощности космического аппарата стало столкновение солнечных батарей с микрочастицей. В агентстве также подчеркнули, что СЭП аппарата обладает избыточной мощностью, а следовательно ничего критического со спутником не произошло. Диаметр поврежденной области батарей составил около 40 см. Также специалисты ЕКА указали на то, что в настоящее время частицы менее 5 сантиметров вообще не отслеживаются, так что они не могут ничего сказать о природе той с которой столкнулись солнечные батареи аппарата. Тэги: Sentinel 1AЕвропейское космическое агентство

Технические характеристики

#ХарактеристикаЗначение
1Длина, метра2.8
2Длина (антены), метра12
3Масса, кг2280
4Масса (сухая), кг2170
5Платформа 1xPRIMA платформа
6Площадь поверхности батареи, квадратных метров20
7Высота, метра4
8Скорость (передачи данных по X стволу), мБит в секунду520
9Скорость (передачи команд на аппарат), кбит в секунду4
10Скорость (передачи данных о телеметрии), кбит в секунду16, 128, 512
11Ширина, метра2.5
12Полезная нагрузкаC-диапазонный радар с синтетической апертурой на 5.506 гГц
13Мощность, Вт5900
14Объем (запоминающего устройства), гБайт500
15Разрешающая способность (Strip Map Mode), метра5х5
16Разрешающая способность (Interferometric Wide Swath), метра5х20
17Разрешающая способность (Extra-Wide Mode), метра20x40
18Разрешающая способность (Wave Mode), метра5x5
19Поляризация (Strip Map Mode)VV+VH или HH+HV
20Поляризация (Interferometric Wide Swath)VV+VH или HH+HV
21Поляризация (Extra-Wide Mode)VV+VH или HH+HV
22Поляризация (Wave Mode)VV или HH
23Ширина полосы обзора (Strip Map Mode), км80
24Ширина полосы обзора (Interferometric Wide Swath), км250
25Ширина полосы обзора (Extra-Wide Mode), км400
26Ширина полосы обзора (Wave Mode), км20х20

Характеристики орбиты

#ХарактеристикаЗначение
1Наклонение, град98.2
2Апогей, км696.3
3Перигей, км694.0
4Период, минут98.5
5САС, год7
6Длинный диаметр эллипса, км7066

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2014-016A

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Стоимость (аппарат), млн. долл.2007-10-01310
2Оператор Европейское космическое агентство
3Производитель Thales Alenia Space
4Производитель Astrium

Информация об удачном запуске

#ХарактеристикаЗначение
1Космодром Космодром Куру
2Дата пуска2014-04-03 at 21:02:00 UTC
3Полезная нагрузка 1xSentinel 1A
4Ракета-носитель 1xСоюз-СТА с РБ «Фрегат»

Найдено 1000 документов по запросу «Sentinel 1A». [Перейти к поиску]


Дата загрузки: 2017-06-16
Скачать документ
Скачать текст
0.12/5
..., A. Hooper, Y. Larsen, P. Marinkovic, T. J. Wright Fig. 1. Sentinel-1A interferogram built by comparing scans... a result, data on dynamic Agency’s Sentinel-1A. regions of Earth’s surface are..., haphazardly collected, The launch of Sentinel-1A marks a radical increase in our... satellite in the European Commission’s Sentinel-1 constellation on 3 April 2014 changed... monitor our dynamic, restless planet. Sentinel-1A, now fully operational, will be... since. How Can Sentinel-1A Measure Earthquake Slip? Sentinel-1A maps an earthquake’s slip.... Unlike previous satellite radar missions, Sentinel-1A was specifically designed to monitor... of data collected. Austin Elliott Sentinel-1A and the 2014 South Napa... earthquake shook just weeks after Sentinel-1A had reached its final operational...]. The first interferogram created by Sentinel-1A shows that the eastern side... can also deform the ground. Sentinel-1A reveals all this motion in... activity. On 12 September 2014, Sentinel-1A acquired a third image over the... and behavior. The images that Sentinel-1 acquired over Napa Valley in... previous radar satellites. However, for Sentinel-1, the default radar acquisitions over... of data that Sentinel-1A will collect. In 2016, Sentinel-1A will be joined by a second, identical satellite, Sentinel-1B, completing... time for any radar mission, Sentinel-1 data will be freely available....uk) plans to provide the Sentinel-1A’s wide swath makes it the.... This wider swath means that Sentinel-1A is the first radar satellite... the processed InSAR results from Sentinel-1 for all the tectonic and... restricted data sets. When the Sentinel-1 constellation is fully operational, the... of radar data from the Sentinel-1 program. We can expect that..., F. Sarti, and A. Mouratidis (2012), The Sentinel-1 mission for the improvement of...



Дата загрузки: 2017-06-16
Скачать документ
Скачать текст
0.05/5
... the LCTs on EDRS-A/C and Sentinel 1B/2B via the ESA... timeline of related developments (Alphasat, Sentinel satellites, and EDRS) are shown... km 0.7 W Second Generation (LEOGEO) (Alphasat, Sentinel 1A and 2A and EDRS) 1.8 Gbps... the Copernicus earth observation satellites Sentinel 1A and Sentinel 2A in LEO orbit... tests with the Copernicus satellites Sentinel 1A and Sentinel 2A and for further.... At least four further Sentinel satellites: Sentinel 1 C and D and Sentinel 2 C and D are planned... Terminals are embarked on the Sentinel 1A and Sentinel 2A satellites as customer... first Sentinel satellite is rapidly approaching. The launch campaign of the Sentinel 1A... the LCT on Sentinel 1A is nominal according specification. The Sentinel 1A LCT is... of the LCT aboard the Sentinel 1A space craft. The LCT and... LCT flight model aboard Sentinel 2A. The Sentinel 2A LCT flight model... of the Sentinel 2A LCT is ongoing. The launch of Sentinel 2A is planned for 2015. The Sentinel B series, which is planned for successive launch after the Sentinel.... The recurring terminals for Sentinel 1B and Sentinel 2B are contracted by... the next batch of Sentinel satellites i.e. the Sentinel C and Sentinel D series is currently.... 8. Laser Communication terminal embarked on Sentinel 1A (courtesy of TAS-I). C. Transportable Adaptive... to be embarked on the Sentinel satellites. The communication link experiments... for the above mentioned Alphasat, Sentinel 1A and Sentinel 2A flight missions. The... optical communication payloads aboard the Sentinel 1A and Sentinel 2A space crafts is... teams in the Alphasat, the Sentinel 1A, Sentinel 2A and EDRS projects is...



Дата загрузки: 2017-06-16
Скачать документ
Скачать текст
0.05/5
.... Following the planned launch of Sentinel-1A in 2013, the contributors to... Data . . . . . . . . . . . . . 7 3 Sentinel-1 Mission and Ground Segment . . . . . . . . . . . . . . . . . . . 9 3.1 Sentinel-1 Mission . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.2 Sentinel-1 Ground Segment . . . . . . . . . . . . . . . . . . . . . . . 10 4 Sentinel-1 Satellites . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.1 The Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5 Sentinel-1 CSAR... Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 6.2 Sentinel-1 CSAR Instrument Processing Facility . . . . . . . . . . . . . . . . 26 7 Sentinel-1 Operation and Observation... . . . . . . . . . . . . . 61 12.6 Sentinel-1 Level-2 Product Performance Summary . . . . . . . . . . . . . . . 66 13 Sentinel Data Policy... Sentinel-1A and 1B Industrial Consortium . . . . . . . . 75 vi Appendix B: Sentinel-1 Product Descriptions . . . . . . . . . . . . . . . . . . 77 B.1 Sentinel-1 Operational Products . . . . . . . . . . . . . . . . . . . . . 77 B.2 Sentinel-1 Hosted User... with the launch of Sentinel-1A in 2013 and Sentinel-1B some 18... Component programme with the Sentinel missions. Chapter 3, ‘Sentinel-1 Mission and Ground Segment... Level-2 products derived from Sentinel-1. Chapter 13, ‘Sentinel Data Policy’, summarises the... products from optical instrument data. Sentinel-4 and Sentinel-5 – Multispectral imaging and profiling.... 7 Sentinel-1 Mission and Ground Segment 3. Sentinel-1 Mission and Ground Segment 3.1 Sentinel-1 Mission Sentinel-1 is... Sentinel-1A will be launched in 2013 and Sentinel-1B in 2015. 10 Sentinel-1 Mission and Ground Segment 3.2 Sentinel-1 Ground Segment The GMES Sentinel-1 Ground... phases. The Sentinel Payload Data Ground Segment features: —— The Sentinel payload-specific... will be required. 13 Sentinel-1 Satellites 4. Sentinel-1 Satellites The Sentinel-1 satellites are being... window. 18 Sentinel-1 CSAR Instrument 5. Sentinel-1 CSAR Instrument 5.1 Operational Modes The Sentinel-1 mission... a fast beam Figure 5.1. Sentinel-1 operational modes. 20 Sentinel-1 CSAR Instrument Figure 5.2. CSAR.... (Astrium GmbH) 24 Sentinel-1 PDGS and CSAR Processor 6. Sentinel-1 PDGS and CSAR... operating nominally. 6.2 Sentinel-1 CSAR Instrument Processing Facility The Sentinel-1 CSAR Instrument Processing... vary for different Sentinel-1 modes. 6.2.1 TOPSAR-Specific Processing The Sentinel-1 IW and... the PDGS. 28 Sentinel-1 Operation and Observation Capabilities 7. Sentinel-1 Operation and Observation... AMI. Mission/mode Sentinel-1/ Interferometric Wide-swath Sentinel-1/ Strip Map Sentinel-1/ Extra Wide... failure scenarios. 30 Sentinel-1 Operation and Observation Capabilities 7.5 Sentinel-1 Observation Concept The... account the other Sentinel-1 mission requirements outlined in Section 3.1, a Sentinel-1 observation scenario... requirements for Sentinel-1 geographic coverage and temporal revisit, two satellites – Sentinel-1A and... 10). 32 Sentinel-1 Operation and Observation Capabilities Figure 7.2. Sentinel-1A Interferometric Wide-swath... in the future. 34 Sentinel-1 User Products 8. Sentinel-1 User Products Following the... products operationally, the Sentinel-1 Core PDGS or the Sentinel-1 Collaborative PDGS may... and Validation of Sentinel-1 Products 9. Calibration and Validation of Sentinel-1 Products The... quality of the Sentinel-1 Level-2 products. The required Sentinel-1 inflight radiometric performance... be carried out. 45 Sentinel-1 and Applications 10. Sentinel-1 and Applications 10... data source. 57 Sentinel-1 Product and Application Performance 12. Sentinel-1 Product and... Sentinel Data Policy 13. Sentinel Data Policy An open and free Sentinel data... of Sentinel-1 Data Products 14. Scientific Use of Sentinel-1 Data Products The Sentinel... of the Sentinel and Earth Explorer data. The first Sentinel missions (Sentinel-1/-2/-3 A-units... Appendix A: Sentinel-1A and -1B Industrial Consortium Appendix A: Members of the Sentinel-1A and...) SSBV (Netherlands) Appendix B: Sentinel-1 Product Descriptions Appendix B: Sentinel-1 Product Descriptions To satisfy... the hosted user products. B.1 Sentinel-1 Operational Products Sentinel-1 operational SAR user products... defined for standard Sentinel-1 GRD products. For standard Sentinel-1 GRD products, three... 100 12 Appendix B: Sentinel-1 Product Descriptions B.1.3 SAR Level-2 Products Sentinel-1 Level-2 products... (i.e. XSD files). B.2 Sentinel-1 Hosted User Products Information products from Sentinel-1 mission data... of the initial Sentinel-1 product portfolio, but the Sentinel-1 PDGS design and...



Дата загрузки: 2017-06-16
Скачать документ
Скачать текст
0.09/5
Sentinel-1 Mission Capabilities Paul Snoeij Evert ... –  Sentinel-1 Mission –  Operational Scenario Definition –  Conclusions We care for a safer world Sentinel-1A and B & GMES Sentinel-1A & B are part of EU... We care for a safer world Sentinel-1 Mission Objectives 1 2 1.  Arctic & Antarctic 3 4 5 2.  Canada... We care for a safer world Sentinel-1 System Space Segment –  A constellation of... Mean Anomaly –  Sentinel-1A to be launched in 2012, Sentinel-1B 18 months... care for a safer world Sentinel-1 SAR Modes Sentinel-1 has one main operational... We care for a safer world Sentinel-1 SAR Modes Flight  Direc4on   Sub...   We care for a safer world Sentinel-1 Performance Requirements Mode Access Angle... Ambiguity Ratio -22 dB Sentinel-1 Data Access Sentinel-1 Routine Data Access Up... world Main Principles of Sentinel Data Policy Sentinel Data Policy = full and... Operational Scenario Definition - 3 For each Sentinel-1 satellite: §  No coverage gap (apart... different acquisitions. Sentinel-1B operates the same scenario as Sentinel-1A: §  all ROIs... and Revisit Time - 1 Coverage with S-1A Satellite One satellite Ø  Complete earth... orbit cycle (6 days) Coverage with S-1A + S-1B Satellite We care for... Revisit Time - 2 Average Revisit Time S-1A Satellite Complete global coverage Average Revisit Time with S-1A + S-1B Satellites S-1A Satellite S-1A + S-1B Satellites After... for a safer world Conclusions –  Sentinel-1 mission introduced –  Sentinel-1 data products maintain data...



Дата загрузки: 2017-05-20
Скачать документ
Скачать текст
0.09/5
... Based on SPOT-5 Take-5 and Sentinel-1A Data for the Estimation of...-5) and synthetic aperture radar (SAR) (Sentinel-1A) data for crop parameter (basal... are used as a proxy of Sentinel-2 data to evaluate the potential...; land cover change; SPOT-5 Take-5; Sentinel-1A; evapotranspiration; TIGER initiative 1. Introduction Crop... 2 of 20 Equator for the Sentinel-1 constellation and five days at... cloud-free conditions for the Sentinel-2 constellation) and reconfigurable acquisitions (different.... For this purpose, EO data (Sentinel-1A + SPOT-5 Take-5) are evaluated for... other hand, the integration of Sentinel-1A VV + VH polarized data into... To achieve a high temporal resolution, Sentinel-1A and SPOT-5 Take-5 images were... 9 Sentinel-1A images from 26 March to 4 October (Table 1 and Figure 2). Table 1. Sentinel-1A... 2015 Sentinel-1A SPOT-5 SPOT-5 Sentinel-1A SPOT-5 SPOT-5 SPOT-5 Sentinel-1A SPOT-5 SPOT-5 SPOT-5 SPOT-5 Sentinel-1A SPOT-5 SPOT-5 SPOT-5 SPOT-5 SPOT-5 Sentinel-1A SPOT-5 SPOT-5 SPOT-5 SPOT-5 Sentinel-1A/SPOT-5 SPOT-5 SPOT-5 SPOT-5 Sentinel-1A SPOT-5 SPOT-5 SPOT-5 Sentinel-1A SPOT-5 SPOT-5 SPOT-5 Sentinel-1A... 5 of 20 5 of 20 Figure 2. Sentinel-1A andSPOT-5 SPOT-5Take-5 Take-5 acquisition... (DOY 85) to85) to Figure 2. Sentinel-1A and timeline,from from March...). 4 October 2015 (DOY 277). The Sentinel-1 mission comprises a constellation of two... polar-orbiting satellites, operating and Sentinel-1 night and mission performing C-band... the weather. Sentinel-1A was launched on 3 April 2014, while Sentinel-1B and... on 25 April 2016. Thewas Sentinel-1A mission includes SAR imaging in.... Sentinel-1A launched on 3 April 2014, while Sentinel-1B launched modesThe withSentinel-1A different... km). This mission provides dual Sentinel-1 satellite can potentially map the... and rapid product delivery. A single Sentinel-1 satellite mode once every 12... is significantly All of the Sentinel-1A C-band SAR images were made...) for all All of the Sentinel-1A C-band SAR images dates, wereand....87°range to 39.26°. Sentinel-1A complex except for the mode... is necessary to radiometrically correct Sentinel-1A products were used in thisisstudy... available state vector that ESA’s Sentinel-2 willto provide. SPOT-5 images wereusing... a 10-m spatial resolution, similar to Sentinel-2 products. In analogy to the... image time series that ESA’s Sentinel-2 mission will provide. SPOT-5 Take... a 10-m spatial resolution, similar to Sentinel-2 products. In analogy to the... until 15 September 2015. These Sentinel-2-type Remote Sens. 2016, 8, 525... for the exploitation of the Sentinel-2 mission. Remote Sens. 2016, 8, 525... for thesteps exploitation of the Sentinel-2 mission. Level-2A SPOT-5 images... April and Sentinel-1A 19 April and (2) SPOT-5 15 May and Sentinel-1A 13... possible pairs between SPOT-5 and Sentinel-1A images were not used because... + Sentinel-1A VV band; (3) SPOT-5 bands + Sentinel-1A VH band; and (4) SPOT-5 bands + Sentinel-1A VV... behavior of of the theSentinel-1A Sentinel-1Asignal signalwas was also analyzed... close to those of the Sentinel-1A acquisitions (Table have a gap of... days, yet for the pair Sentinel-1A 19 April and SPOT-5 30... between the gamma VV + VH Sentinel-1A bands and Figure 7. Scatterplots of... between the gamma VV + VH Sentinel-1A bands and the the NDVI... Image/Month SPOT-5 April August Sentinel-1A 19 13 6; 30 24 17... 15 4; 29 24 18; 28 Sentinel-1A 19 13 6; 30 24 17... April (SPOT-5) and 19 April (Sentinel-1A) Pair A SVM OA (%) KC (%) 78... May (SPOT-5) and 13 May (Sentinel-1A) Pair B Figure 8 shows the classification... the northern part of the Sentinel-1A images for three to it... the northern part of the Sentinel-1A images for three epochs, 14... Tagus Valley, the use of a Sentinel-1A VH band together with the.... Moreover, when adding only the Sentinel-1A VV band or both SAR... 4.0%. The use of multitemporal C-band Sentinel-1A images along with multitemporal SPOT... multitemporal and multisensor EO data (Sentinel-1A and SPOT-5 Take-5) for crop.... The integration of microwave data (Sentinel-1A) with optical data (SPOT-5 Take... study to simulate the ESA Sentinel-2 time series, is relevant for... (MacDonald, Dettwiler and Associates Ltd.). Sentinel-1 Product Definition; Ref: S1-RS..., A. Avaliação do potencial das imagens Sentinel-1 para identificação de culturas agr...



Дата загрузки: 2017-06-15
Скачать документ
Скачать текст
0.12/5
... launch of the first satellite (Sentinel-1A) Components & Competences Coordinators: Space Component... H2020 ”Space” not included 7 The Sentinel Family The world’s most comprehensive...-term operational perspective Launch of Sentinel-1A • 3 April 2014 • Kourou spaceport • Soyuz...-15 Earthquake Displacement Measurement with Sentinel-1A DLR/EOC Supporting value adding... First Images of Sentinel-1A 36 Years of Radar Vision Sentinel-1A Image Acquired on 24 May 2014 Stripmap mode S3 Sentinel... for Floods in Bosnia Herzegovina Sentinel-1A - Deforestation over Brazil Acquisition: 21... by Sentinel-1 Sentinel-1A TOPS EW VV/VH acquired on 19 April 2014 Sentinel-1A TOPS EW HH/HV acquired on 25 April 2014 … and Sentinel... 18 Copernicus Quantum Leap: Sentinel-2 Landsat-8 SPOT-5 Sentinel-2 Launch (most recent) 2013... 10, 20, 60 19 Comparison Sentinel-2/Landsat-8 spectral bands Source: http... offered as part of the Sentinel-2 toolbox: ˜600 MB Bottom-of... https://earth.esa.int/web/sentinel-tbx/sentinel-2-toolbox reflectances in (using... 26 Sentinel data are free for everyone sentinels.copernicus.eu Sentinel-1A already...



Дата загрузки: 2017-06-15
Скачать документ
Скачать текст
0.09/5
.../Revision: 3/3 Date: 14/10/2016 Sentinel-1 Sentinel-1 Product Specification Prepared By: Matthieu... and Section Relationships ....................................................... 1-3 Sentinel-1 Product Family Tree ............................................................................... 3-3 Sentinel-1 Product Composition Overview.............................................................. 3-7 Example... Image MDS ............................................................................... 3-26 Sentinel-1 Product Naming Convention ................................................................ 3-33 Sentinel-1 Manifest File Structure... Sentinel-1 Manifest File........................................................... 3-9 Table 3-2 Summary of Measurement Data Sets used by Sentinel-1 .......................................... 3-9 Table 3-3 Summary of the Annotation Data Sets used by Sentinel... Table 3-13 Sentinel-1 Product Naming Elements.................................................................... 3-34 Table 3-14 Sentinel-1 Data Set... for Sentinel-1 .................................. 3-37 Table 3-16 Annotation Data Set Naming Convention for Sentinel-1 ...................................... 3-37 Table 3-17 Representation Data Set Naming Convention for Sentinel... Sentinel-1 Product Format ............................................ 3-39 Table 3-20 Data Type - adsHeaderType .................................................................................. 3-42 Table 4-1 Sentinel... in Sentinel-1 Products ............................................. 6-14 ESA Unclassified – For Official Use (xvi) Sentinel-1 Table... Sentinel-1 Instrument Processing Facility (IPF). 1.2 Scope This product specification satisfies the Sentinel-1 detailed L1 product format (deliverable PFL1-4) and the Sentinel-1 detailed... format of Sentinel-1 L1 and L2 products for the four Sentinel-1 Synthetic... in the Sentinel-1 product family are detailed in the Sentinel-1 Product Definition... up each Sentinel-1 L1 product; ESA Unclassified – For Official Use (1-1) Sentinel-1 Ref... Sentinel-1 L2 product;  Section 6 describes the contents and format of each Sentinel.../10/2016 Sentinel-1 R-14 S1-TN-MDA-52-7445 Sentinel-1 Level 1 Detailed... defined in the Sentinel-1 Product Definition [A-3] that:  applies to Sentinel-1 L1 and... of Sentinel-1 products. The detailed implementation of the SAFE format for Sentinel... Define (optionally) Figure 3-2 Sentinel-1 Product Composition Overview Every Sentinel-1 product contains a manifest... DSRs within Sentinel-1 products. ESA Unclassified – For Official Use (3-7) Sentinel-1 Ref: S1... the Sentinel-1 products using XML Schema [R-3] and [R-4] and implement the Sentinel-1 specialisations... Sentinel-1 products. Consideration has been made with respect to the ESA Sentinel... the top-level Sentinel-1 product folder. The top-level Sentinel-1 product folder...: 3/3 Date: 14/10/2016 Sentinel-1 Table 3-13 Sentinel-1 Product Naming Elements Name... for products produced for the Sentinel-1A instrument and the S1B is... data set files within a Sentinel-1 product. Sentinel-1 product data sets are composed...: 3/3 Date: 14/10/2016 Sentinel-1 Table 3-14 Sentinel-1 Data Set Naming Elements... for products produced for the Sentinel-1A instrument and the s1b is... within Sentinel-1 products. Table 3-15 Measurement Data Set Naming Convention for Sentinel... within Sentinel-1 products. Table 3-16 Annotation Data Set Naming Convention for Sentinel... within Sentinel-1 products. Table 3-17 Representation Data Set Naming Convention for Sentinel-1 RDS Type Naming Convention Sentinel 1 Object Types s1... 3.6.3 for the Sentinel-1 namespaces:  s1sar: http://www.esa.int/safe/sentinel-1.0/sentinel-1/sar  s1sarl1: http://www.esa.int/safe/sentinel-1.0/sentinel-1/sar/level-1  s1sarl2: http://www.esa.int/safe/sentinel-1.0/sentinel-1/sar... for products produced for the Sentinel-1A instrument and the S1B is...: 3/3 Date: 14/10/2016 Sentinel-1 Table 4-1 Sentinel-1 Level 1 SLC Product Composition File...: 3/3 Date: 14/10/2016 Sentinel-1 Table 4-3 Sentinel-1 Level 1 GRD Product Composition File... SAFE, the Sentinel-1 SAFE specialisation and those defined for Sentinel-1 may overlap.../10/2016 Sentinel-1 Table 6-7 Mandatory Wrapped Metadata Elements for Sentinel-1 Products Name....esa.int/safe/sentinel-1.0 anyURI Time extent of the Sentinel-1 L1 product... in a Sentinel-1 Level 1 product. Image measurement data sets within Sentinel-1 L1 products... the image. Examples: “Sentinel-1A SM SLC L1” and “Sentinel-1A IW GRD MR... Official Use (6-112) Sentinel-1 A XML SCHEMAS A1 SENTINEL-1 OBJECT TYPES SCHEMA Ref... Sentinel-1 product schemas See attached file “s1-object-types.xsd” A2 SENTINEL-1 L1 PRODUCT ANNOTATION SCHEMA Defines the Sentinel-1 L1 Product...-1-product.xsd” A3 SENTINEL-1 L1 CALIBRATION SCHEMA Defines the Sentinel-1 L1 Calibration...-1-calibration.xsd” A4 SENTINEL-1 L1 NOISE SCHEMA Defines the Sentinel-1 L1 Noise...



Дата загрузки: 2017-06-16
Скачать документ
Скачать текст
0.04/5
... NESTa................................................................................................................. 3 Session: Sentinel-1 ............................................................................................................................................................................ 3 Sentinel-1 Mission Implementation .......................................................................................................................................... 3 Sentinel-1 Mission Operations Concept..................................................................................................................................... 4 Sentinel-1 In-orbit Calibration and Performance Verification ................................................................................................ 5 Sentinel-1 Payload... Virtual reconstruction and validation of Sentinel-1 Interferometric WideSwath mode: InSAR/PSI... remote sensing, in preparation for Sentinel Missions ..........................................................................................................................................111 Source models for... Posters on ESA Sentinel-1 constellation ....................................................................................................................................129 End to End Sentinel-1 Topsar interferometric...://earth.esa.int/nest. Session: Sentinel-1 Sentinel-1 Mission Implementation Author(s) Paul Snoeij... (1) , Department (1) ESA, NL Abstract The Sentinel-1 synthetic aperture radar (SAR) constellation... and Security (GMES) programme. The Sentinel-1 constellation is expected to provide... and associated monitoring needs. The Sentinel-1 satellite carries a Synthetic Aperture Radar... is expected that Sentinel-1A be launched in 2013 and Sentinel-1B 18 months later. Once in orbit the Sentinel-1 satellites... development phase will be presented. Sentinel-1 Mission Operations Concept Author Pierre... activities. This approach for the Sentinel-1 observation scenario requires the need... regarding the respective Sentinel-1 and Radarsat Constellation Mission. Sentinel-1 In-orbit Calibration... ESA. ESA is developing the Sentinel-1 European Radar Observatory, a constellation of... programmed and accessed during the Sentinel-1 commissioning phase and the remainder... and performance verification of the Sentinel-1 constellation. 5 Sentinel-1 Payload Data Ground Segment... Sentinel-1 Payload data Ground Segment (PDGS) will be responsible during the Sentinel-1 mission operations for the Sentinel-1 mission planning, X-Band... maintained in all straining areas, Sentinel-1A should be able to resolve... tectonic zones. We recommend that (i) Sentinel-1 acquire both ascending and descending... Remote Sensing Technology, DE Abstract Sentinel-1 constitutes ESA’s follow-up mission... the scatterer. For the upcoming Sentinel-1 mission, Terrain Observation by Progressive... Virtual reconstruction and validation of Sentinel-1 Interferometric WideSwath mode: InSAR/PSI... applications, a default imaging mode of Sentinel-1 is an Interferometric WideSwath (IWS... 3D deformation fields from ESA Sentinel-1 SAR mission. [1] Jung, H.S., Won, J.S., & Kim... remote sensing, in preparation for Sentinel Missions Author(s) Giuseppe Puglisi (1), Pierre... implementation of the future ESA Sentinel missions represents a unique opportunity for.... The first satellites of the Sentinel missions (Sentinel-1A and 1B) will continue... interferograms or time series analysis. Sentinel-2 constellation is aimed at continuing... providing essential guidelines for the Sentinel missions. The large datasets available... the Sentinel mission are discussed, focusing particular attention on radar (Sentinel 1) and optical (multispectral; Sentinel 2) sensors, performing also... 1 Posters on ESA Sentinel-1 constellation End to End Sentinel-1 Topsar interferometric experiment...-2-end Sentinel-1 specific interferometric experiment that has been carried out exploiting Sentinel-1 simulated data. The simulation has been carried out by the Sentinel-1 Instrument Software Simulator that is capable of providing realistic Sentinel... able to reproduce the correct Sentinel-1 instrument acquisition timeline and reconstruct... derived from ENVISAT data and Sentinel-1 system parameters. [1] G. Krieger S. Huber, “The... Dynamic Block Adaptive Quantization for Sentinel-1 SAR missions,” IEEE Geoscience and... of interferometric SAR missions including Sentinel-1 [1]. The advantage of SCANSAR is..., F., Advances in SAR interferometry for Sentinel-1 with TOPS, Radar Confererence 2008...



Дата загрузки: 2017-06-16
Скачать документ
Скачать текст
0/5
The Copernicus Programme PEOIC Workshop Tokyo, 10 November 2015 Josef Aschbacher, ESA Head, Programme Planning & Coordination, Directorate of Earth Observation Programmes ESA Earth Observation Programmes Copernicus: A Space Flagship Programme Copernicus is a space flagship programme of the European Union. Role of ESA (entrusted by EC): •  Coordinator and system architect of the Space Component •  Coordination and data procurement from Copernicus Contributing Missions •  Develops the Sentinels (incl. co-funds for dev. units) •  Operates Sentinel 1, 2, 3Land and 5P Space Component In-Situ Component Services Component 3 Copernicus Users Policymakers Decision Makers Space Enthusiasts Start-Up Companies Scientists Large Institutional User Organisations Students Private Persons Public Authorities Value-Adding Companies 4 Copernicus Facts & Figures 6 1543 Niccolò Copernicus publishes his theory of a heliocentric system € 3.4 B invested by ESA and EU till this day €0 to pay for access to Sentinel data service domains covered 2014 € 10 of public return for every € 1 spent by the European tax payer on Copernicus start of Copernicus operational phase 14 new satellites & instruments specifically developed for the operational needs of Copernicus 83000 jobs generated by Copernicus by 2030 5 Components & Competences Coordinators: Space Component Overall Programme Coordination Partners: Private companies Industries National Space Eumetsat Agencies EMCWF Services Component EMSA snd FRONTEX M ercator Ocean Service operators EUSC EEA JRC In-situ data are supporting the Space and Services Components 6 The Sentinels Dedicated Copernicus Spacecraft: Sentinels •  S1: Radar (S1A launched) Ground Segment •  S2: High Resolution Optical (S2A launched) •  S3: Medium Resolution Imaging and Altimetry •  S4: GEO Atmospheric Chemistry •  S5P/S5: LEO Atmospheric Chemistry •  S6/Jason-CS: Altimetry Services Copernicus Contributing Missions COSMO-Skymed SPOT (VGT) TerraSAR–X Tandem-X PROBA-V Radarsat Pléiades Deimos-2 RapidEye VHR ical R Op t H and ions s mis DMC Copernicus Contributing Missions Atmospheric missions Cryosat Jason SPOT (HRS) MetOp Meteosat 2nd Generation 8 Tentative Sentinel Schedule Launch Sentinel-1A •  3 April 2014 •  Kourou spaceport •  Soyuz-2 rocket •  New era of Earth observation Campi Flegrei seen by Sentinel-1A Copyright: Copernicus data (2015)/ESA/DLR Microwaves and Radar Institute/INGV/e-GEOS/GFZ–SEOM INSARAP study Aral Sea seen by Sentinel-1A Ice Streams seen by Sentinel-1A Greenland, West Coast January 2015 Copyright: Copernicus data (2015)/ ESA/Enveo Sentinel-1: Disaster Management Myanmar Flooding August 2015 Sentinel-2A launch •  22 June 2015 •  Kourou •  Vega VV05 Sentinel-2A: First images French Riviera Northwest Italy and Southern France Po Valley Sentinel-2A: Agricultural Monitoring Sentinel-2A: Irrigation and Fires Tabuk, Saudi Arabia Sentinel-2A: Glacier Velocity Fields Credits: A. Kääb, University Oslo Sentinel-1A und -2A: Traffic Jam Sentinel-3: The Next in Line Main satellite characteristics •  •  •  •  •  •  1250 kg maximal mass, 1100 W average power consumption volume 3.89 m x 2.202 m x 2.207 m 4 instruments supporting Optical (OLCI, SLSTR) and Altimetry (SRAL, MWR) missions POD System (GPS, DORIS, LRR) sun synchronous orbit at 814.5 km mean altitude 7.5 years lifetime (fuel for 5 add. years) Microwave Radiometer Sea and Land Surface Temperature Radiometer Ocean and Land Colour Instrument GPS DORIS Antenna •  •  Launch S3A late 2015 Launch S3B 18 months later SAR Radar Altimeter Sentinel-3: Mission Objectives Primary Secondary –  Sentinel-3 shall provide continuity of an ENVISAT type measurement capability for Copernicus Services, including: Continuity of ocean colour as good as ENVISAT MERIS or better Continuity of SST as good as ENVISAT AATSR or better Continuity of SSH as good as ENVISAT RA-2 or better with SAR capability derived from CryoSat-2 Continuity of land products (reflectance's, temperature) as good as ENVISAT MERIS and AATSR or better Provide consistent quality L1 and L2 optical and topography products in a timely manner for Copernicus services Continuity of SPOT VGT-P like products Fire, River and lake height, atmospheric products…for Copernicus services Copernicus Data Access sentinels.copernicus.eu Sentinel-1A Data Statistics •  free and open access sentinels.copernicus.eu Users and Products Statistics: (status 1 October 2015) •  11,900 registered users •  more than 276,000 products available for download •  2,210,467image downloads, representing 2.57 PB of data © Thinkstock by Getty Images Tokyo Bay seen from Space image acquired on 11 July 2014 by Sentinel-1A Thank you for your attention 26



Дата загрузки: 2017-05-21
Скачать документ
Скачать текст
0.13/5
Analysis of Sentinel-1 radiometric stability and quality for ..., N. Baghdadi, M. Zribi, S. Angelliaume. Analysis of Sentinel-1 radiometric stability and quality for.... remote sensing Article Analysis of Sentinel-1 Radiometric Stability and Quality for... stability of the new SAR Sentinel-1A “S-1A” sensor was first assessed by... invariant targets was compared from S-1A and Radarsat-2 “RS-2” data. The... stable sub-time series of S-1A data. The first (between 1 October... addition, the results show that S-1A images of the first and... RS-2 data, with a difference between S-1A and RS-2 lower than 0.3 dB. However, the S-1A images of the second sub... 1 dB. Keywords: Synthetic Aperture Radar; Sentinel-1A; radiometric stability and quality; Radarsat... Sentinel-1 constellation has been scheduled to ensure continuous monitoring. The first Sentinel-1 sensor, S-1A, was launched on 3 April... the launch of the second Sentinel-1 sensor, S-1B, is scheduled for... repeat cycle for each Sentinel-1 satellite). Aboard Sentinel-1 is a C-band (~5.4 GHz) SAR... radiometric corrections to achieve required S-1A image radiometric accuracy levels. During...). As an outcome of the S-1A commissioning phase, the S-1 IPF was... correction was introduced to the S-1A images acquired on 19 March... expected gain imbalance on acquired S-1A data was reported during the... offset correction was applied to S-1A images acquired on 25 November... radiometric stability and quality of S-1A signals using a times series of.... To assess radiometric stability levels, S-1A images were first calibrated. Second, temporal variations in S-1A backscattering coefficients (σ˝ ) averaged over invariant... radiometric quality levels, a comparison between S-1A and RS-2 σ˝ returned from the... Description In this study, 154 S-1A images of both Ascending and... pixels of 20 m ˆ 22 m. The Sentinel-1 Toolbox [5] was used to calibrate... into backscattering coefficients (σ˝ ). Our geocoded S-1A images have pixel sizes of... the radiometric stability of returned S-1A signals (Figure 1). The first target... (1561 and 2406 pixels for S-1A and RS-2, respectively). The second... approximately 8.1 ha (856 pixels in S-1A). Finally, the third target represents... foliage throughout the year. The S-1A images cover all of the... 3. Data To radiometric stability theallS-1A data, σ˝ -value variations of each invariant Forassess eachthe S-1A image, the valuesofof pixels within...˝ ) (Figure 2). To explain ˝ potential variations 3.1. S-1A temporal Radiometric Stability in σ -values... the radiometric stability of the S-1A data, σ°-value temporal variations of... Sigma Zero (NESZ) value for S-1A (´22 dB) [8]. separately for radar... that enhance the calibration of S-1A products [3,4]. However, for the racetrack..., Sigma Zero (NESZ) value for S-1A (−22 dB) [8]. certain σ˝ -values within... at the same time as S-1A acquisitions. The presence of water... that enhance the calibration of S-1A products [3,4]. However, for the racetrack.... (a) (c) (b) (d) (e) Figure 2. 2. Temporal variations of of S-1A S-1A σ σ°˝ in both VH VH and... Circles denote denote the the S-1A S-1A σ° σ˝ affected affected by by rainfall. rainfall. To quantify the S-1A signal stability for both VH... (M) and standard To quantify the S-1A signal stability for both VH....1 ˘ 0.06(4) ´14.4 ˘ 0.07(3) ´6.2 ˘ 0.17(4) ´7.3 ˘ 0.08(3) 3.2. S-1A Radiometric Quality The radiometric qualities of S-1A data were investigated by calculating the difference between S-1A and RS-2 σ˝ (in VV at 34˝ and 42˝ ) (∆σ˝ = σ˝ S-1A ´ σ˝ RS-2 ) returned for the racetrack... do not fall within the S-1A period of acquisition. However, we assume that S-1A and RS-2 radar signals returned... comparable. The results show that S-1A σ˝ -values in the first and... sub-time series, respectively. Thus, S-1A images acquired prior to 19... to be well calibrated. However, S-1A data acquired between 19 March... an offset of roughly 1 dB (σ˝ S-1A higher than σ˝ RS-2). 4. Conclusions The... quality of the new SAR sentinel-1A “S-1A” sensor. Our results reveal three... the radiometric stability of the S-1A data of the Ascending and... calibrated with a difference of between S-1A and RS-2 σ˝ (in VV polarization... 42˝ ) lower than 0.3 dB. However, σ˝ S-1A from images acquired between 19... radiometric stability and quality of S-1A images acquired prior to February... of a longer time series of S-1A images and more reference data are recommended to fully assess S-1A radiometric stability and quality levels..., 29, 4653–4665. [CrossRef] Miranda, N. Sentinel-1 Instrument Processing Facility: Impact of..., N. Sentinel-1A TOPS Radiometric Calibration Refinement; European Space Agency: Paris, France, 2015. SENTINEL-1 Toolbox. Available online: https://sentinel.esa.int/web/sentinel/toolboxes/sentinel-1/ (accessed...). Geudtner, D.; Torres, R.; Snoeij, P.; Davidson, M.; Rommen, B. Sentinel-1 System capabilities and applications. In...