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

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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»

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... 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...



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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...



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... и изображениям РСА SAR-С со спутника Sentinel-1A. Для интерпретации РЛ сигнатур привлекаются..., микроволновые радиометры, GCOM-W1 AMSR2, Sentinel-1ASAR, скаттерометры, прикромочная ледовая зона... апертурой (РСА) SAR-C со спутника Sentinel-1A, запущенного Европейским космическим агентством (ЕКА... изображение РСА, полученное со спутника Sentinel-1A 5 февраля 2015 г. в 20:38 Гр...). РЛ зондирование Земли со спутника Sentinel-1A осуществляется на частоте ν  =  5,405  ГГц... доступны на сайте https://sentinel.esa.int/web/sentinel/sentinel-data-access. Для.... за 10 час до зондирования Sentinel-1A. Образование льда в открытом море является... изображения РСА SAR-C со спутника Sentinel-1A (120 км х 70 км), полученных... изображений РСА SAR-C со спутника Sentinel-1А размером 25 ×25 км..., изображений, полученных РСА со спутника Sentinel-1A, полей ветра, восстановленных по данным... покрова являются РСА на спутниках Sentinel-1B и ALOS-2, зондирующие Землю на... (Dierking, 2007). Запуск в 2016 г. спутника Sentinel-1B улучшит и временное разрешение, что... изображений РСА SAR-C со спутника Sentinel-1A, JAXA за данные радиометра AMSR2... ice regimes using images from Sentinel-1 and ALOS syntactic aperture radar...-W1 AMSR2 radiometer measurements and Sentinel-1A SAR-C images. To interpret radar..., microwave radiometers,GCOM-W1 AMSR2, Sentinel-1ASAR, scatterometers, marginal ice zone... ice regimes using images from Sentinel-1 and ALOS syntactic aperture radar...



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... streams from Europe’s Copernicus programme (e.g. Sentinel-1, Sentinel-2, Sentinel-3) will boost supply. Building the... microwave radars (active) C-Band: RADARSAT-2, Sentinel-1A generally using C-, L-, and X-band L-Band... Landsat data, and soon Sentinel-2 and -3). Public good Sentinel-1 data could help..., in 2014 Europe launched the Sentinel-1A mission, which is the first... acquisitions. With the exception of Sentinel-1A, all current SAR missions are... in the plans. For example, Sentinel-1A does not address special requests... data streams are RADARSAT-2 and Sentinel-1A. RADARSAT-2 is operated commercially by... prior to the launch of Sentinel-1A was the main C-band SAR... used globally. The advent of Sentinel-1A has provided a public good data... a given application are addressed by Sentinel-1’s baseline acquisition strategy, then it... well as the public good Sentinel-1A from Europe. The expectation is... good SAR data available from Sentinel-1A, users will adapt their relevant... streams. However, operational continuity for Sentinel-3 under Europe’s Copernicus programme increases.... data consumers. intelligence procurement plans. Sentinel-2 may bend behaviour and requirements...’ missions currently operational (RADARSAT-2 and Sentinel-1A), and continuity envisioned for both..., Sentinel-1B should be in operation, with continuity planned beyond that. Sentinel.... Sentinel-1A was launched in April 2014, and is currently operational, with Sentinel... systematic acquisitions, in particular for Sentinel-1A. Without appropriate acquisitions over Australian... Sentinel-2A in 2015. This is expected to be followed by Sentinel... (EC/ESA) on Sentinel-2A (2015) and Sentinel-2B (2016) are expected... Resolution and Wavelength Characteristics of SENTINEL-2 Multispectral Instrument (MSI), the Operational... Australian representation in Landsat and Sentinel-2 systematic acquisition plans is important... the launch of Sentinel-2A in June 2015. Sentinel-2A improves on... spectral resolution, data volumes from Sentinel-2 will be a significant increase relative...: Landsat (current – 2023+) EC/ESA: Sentinel-2 (2015 – 2025+) − − High Optical Resolution.... GCOM-C programme continuity very uncertain. Sentinel-2 ground segment implementation needs to... constellations (SkyBox, Planet Labs) − 10m: Sentinel-2 Many commercial supply options in...+) EC/ESA: Sentinel-2 (current – 2023+) − Strong continuity through Sentinel-1, though ground segment... (e.g. improved spectral/spatial resolution from Sentinel-2), and some will be negative... streams from Europe’s Copernicus programme (e.g. Sentinel-1, Sentinel-2, Sentinel-3). It is helpful that Australia...-8 (low resolution) and Sentinel-2A (medium resolution). Sentinel-3 is also expected to... (Sentinel-2) JPSS (NOAA) Joint Polar Satellite System Ocean and Land Imager (Sentinel...: 8-16 days with combined Landsat-Sentinel-2 and Sentinel-1 Timeliness / Latency Low resolution...-7, Landsat-8, Sentinel-1 Anticipated Streams Low resolution: − Medium resolution: − Blended Landsat / Sentinel-2 product available at higher frequency, complimented with Sentinel-1 (SAR) coverages...) − Sentinel-3A (integration work not yet started) − GCOM-C − Himawari-8 Medium resolution: − Sentinel.... Similarly, continuity from Landsat-8 to Sentinel-2 will be critical. Nuances Emphasis...-2, SARAL Streams Anticipated Streams − Data Sentinel-3 − − Important Technical − Characteristics − Continuity Coordination... Landsat and MODIS − Anticipated Streams Sentinel-2A, Sentinel-3A, VIIRS Data − Important... for SMAP. Paddock scale for Sentinel-1A derived products (30m) Repeat Frequency... Information − Description − − Grassland fuel loads Sentinel hotspots programme Burn scar assessment...: − MODIS − AVHRR − VIIRS − Sentinel-3 − Himawari-8/9 Medium Resolution: − Landsat − Sentinel 2 Commercial data streams... Norman Mueller (GA) Medium resolution: − Sentinel-2A Important Technical − Characteristics − Continuity... MODIS back to 1999. − Himawari-8, Sentinel-2 and -3 being investigated. − Source Switching... Data − Streams − MODIS Landsat − Landsat − Sentinel-1 − MODIS − VIIRS Commercial data sources..., TerraSAR-X, Radarsat-2) Anticipated Streams Sentinel-3A Himawari-8 − Sentinel-2A Automated water detection...: SAR: − Currently planning for Sentinel-3A − Sentinel-1A acquisition is now in build...) Archive Requirements − Currently planning for Sentinel-2A. Increased revisit frequency, spatial.... Now adding SAR archiving with Sentinel-1A data being made available. AGDC... quarterly. − Source Switching Nuances Emphasis Sentinel-1, -2 and -3 being investigated. and − − − − − − Australia... may be heavily cloud affected. Sentinel-1A wil provide the first SAR... for research purposes Anticipated Streams Sentinel-2A − Sentinel-3A (for some applications, as a MODIS continuity option) A blended Landsat / Sentinel... − Characteristics − − − − − Continuity Coordination Subsidence: SAR (e.g. Sentinel 1, TerraSAR-X, TanDEM-X), or high resolution... photography Fugitive gas regional trend: Sentinel 5 Dust, plant physiological impacts: satellite...



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0.08/5
... 3.1 Resolution Classes........................................................................................................... 11 3.2 Copernicus Dedicated Sentinel-1 Mission ...................................................................... 12 3.3 Copernicus Contributing Missions... of ESA-User Licence .......................................................... 68 7.3.1 Sentinel data access ...................................................................................................... 68 7.3.2 Contributing Missions... D D D D D V V MR_IMAGE_2015 D D D - D - - MR_OPT_GLOBAL LR_OPT_GLOBAL HR2MR1_SAR_GLOBAL (Sentinel-1) D D D D D D D D D D D1 D2 D D D D D D D LR_SAR_GLOBAL (Sentinel-1) D D D D D D D HR2-MR1_SAR_Sea_Ice D D D D3... users. Since 2014, the dedicated Sentinel-1 mission developed by ESA has... Official Use 3.2 Copernicus Dedicated Sentinel-1 Mission Sentinel-1 is the first of the.... Sentinel-1A is approaching routine phase (planned for early June 2015) while Sentinel... is expected by end 2016. Sentinel-1C and -1D are currently... planned to continue the series. Sentinel-1 predefined observation scenario supporting Copernicus... published at https://sentinel.esa.int/web/sentinel/missions /sentinel-1/observation-scenario. Data... online. Since October 3rd 2014, Sentinel-1A data are available as follows... constellation UK-DMC2 Kompsat-3 Pleiades-1A/1B QuickBird-2 SPOT-5, SPOT-6-7 SkySat... 2014 Systematic Sentinel-2/-3 data supply Systematic Sentinel-2 data supply Systematic Sentinel-2 data supply... LR worldwide coverage Systematic Sentinel-1 data supply Systematic Sentinel-1 data supply Systematic... LUZ Missions Spot-5, Resourcesat-2 Systematic Sentinel-2 PleiadesA/B,GE-1, WV-2, WV-3, Deimos... Proba-V 333m and 1km systematic Sentinel-1 data supply, complemented by Radarsat... will be delivered in level 1A and level3/Ortho with the following specifications: Level 1A, 10m: - System corrected and at... will be delivered in level 1A and level3/Ortho with the... level. Selected missions Pléiades 1A & 1B, WorldView-2, WorldView-3, GeoEye-1, Deimos... allocated as follows:  Pléiades 1A & 1B, 89 large regions  Deimos... / Product quality (continued) • Pleiades 1A/1B Level 1A: System corrected and at... high to medium resolution SAR - SENTINEL-1A Area of interest Worldwide coverage... Official Use Acquisition windows & constraints Sentinel-1 coverage frequency over land depends... https://sentinels.copernicus.eu/web/sentinel/missions/sentinel-1/observationscenario Processing /Product quality.... Mission group/ Selected missions - MG1/SENTINEL-1A, Radarsat-2, COSMO-SkyMed, TerraSAR-X Spatial... and ≤ 300m) Frequency bands - C band : SENTINEL-1A, Radarsat-2; - X band : COSMO-SkyMed, TerraSAR... - For Official Use Operational modes SENTINEL- 1A: - Interferometric Wide, swath 250 Km... Strategy/ Acquisition windows & constraints Systematic Sentinel-1 daily coverage over sea ice...-X data are used to complement SENTINEL- 1A by providing gap coverage over...: within 12 hours (6 hours average) SENTINEL- 1A NRT3h over Baltic, Eurarctic, Greenland... Int_Org_NGO: DISCOVERY Public: DISCOVERY (TerraSAR-X, Sentinel-1A data: DOWNLOAD for all Copernicus... Pan, VNIR 0.31, 1.24 m Pleiades-1A/1B Deimos-2 * GeoEye-1* QuickBird IKONOS... and Optical Standard Emergency TERRASAR-X Sentinel-1 18.5 m 20 m Envisat-1 ERS-1/2 COSMO... 7.3.1 Sentinel data access A simple on-line registration is required to access Sentinel... the use and distribution of Sentinel data available at https://sentinels... subscription is needed to access Sentinel data which are directly available...



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0.06/5
... → A BIGGER PICTURE FOR COPERNICUS The Sentinel-3 mission Craig Donlon, Bruno Berruti... 2 www.esa.int → sentinel-3 The launch of Sentinel-3A in February 2016... for operational oceanography. This latest Sentinel is providing continuous and essential... instruments, Sentinel-3A has joined the Sentinel-1A radar satellite and the Sentinel-2A... its comprehensive integrated system of Sentinel satellites grows. Copernicus is a revolution... citizens alike. Eyes on Earth Sentinel-3A maps Earth’s surface systematicallyusing... of Copernicus services. Sentinel-3B will join Sentinel-3A in orbit in...ño. By accurately measuring temperature changes, Sentinel-3’s Sea and Land Surface Temperature... in coastal megacities and worldwide. Sentinel-3’s Ocean and Land Colour Instrument... ocean and coastal waters can → sentinel-3 Sentinel-3’s measurements of sea-surface temperature... protection and clean-up operations. Sentinel-3’s multi-instrument package provides measurements... information about the open ocean, Sentinel-3 data offers complementary measurements that... Agency | Bulletin 165–168 | 2016 5 ↑ Sentinel-3 supports the shipping industry with... canopy and terrestrial chlorophyll index. → sentinel-3 → Leaf area index over land... fires will be available using Sentinel-3 measurements combined with meteorological forecasting... plans to prevent forest fires. ↑ Sentinel-3’s SLSTR includes two dedicated active... | 2016 7 earth observation ↑ Information from Sentinel-3 about the health of Earth.... This robust approach ensures that Sentinel-3 incorporates the latest technology innovations....int Sentinel-3 is arguably the most complex of all the Sentinel missions. Through the development of all of the Sentinel missions... benefit society at large. → sentinel-3 ↑ Work on Sentinel-3A’s radar altimeter at..., Sentinel-3 is arguably the most complex of all the Sentinel missions. ↑ Sentinel-3’s SLSTR... more informed decision making. The Sentinel-3 topography package brings a step change... the demanding performance requirements for Sentinel-3. Working together ESA and Eumetsat... the rest of the Sentinel fleet, the Sentinel-3 satellites will make a unique...), and more than 343 000 Sentinel-1A products are available online which..., corresponding to more than 3.3 petabytes. Sentinel-1A remains very stable using all... Sentinel-1C and -1D spacecraft, that guarantee the continuation of the Sentinel... same industrial team that developed Sentinel-1A and -1B, in particular with... of the Sentinel-2 mission through the next two decades. Sentinel-2 Sentinel-2A underwent..., spectral and revisit capabilities of Sentinel-2 coupled to excellent radiometric and... maize (yellow) → in progress Sentinel-3 The Sentinel-3A satellite AIT campaign was... and Eumetsat. In parallel the Sentinel-3 Qualification and Acceptance Review) took... instrument final assembly. The Sentinel-3C and Sentinel-3D spacecraft procurement contract... of the Sentinel-3 Mission through the next two decades. Sentinel-3A, the... Thermal Model of Sentinel-4 Nadir Baffle [Invent/ OHB) Sentinel-3A inspection at... concluded all review objectives achieved. Sentinel-5 Precursor Qualification Model of the... the laser-optical link with Sentinel-1A and -2A are planned for... all remain within requirements. →→COPERNICUS Sentinel-1 Sentinel-1B in-orbit commissioning was... handed over to Sentinel-1 mission management to join Sentinel-1A, her twin sister, for the systematic operations of the Sentinel-1 mission. Sentinel... functional satellites in orbit. The Sentinel-1 mission capacity will increase with... about 5 mm diameter impacted the Sentinel-1A solar array on 23 August... | 2016 81 programmes in the Sentinel-1A mission remains between 1:35 (for... three Sentinels (1A and 1B, 2A and 3A) The Sentinel-1C and -1D production, to eventually replace the operational Sentinel-1A and... being completed before FM production. Sentinel-2 Sentinel-2A has been in orbit... of Sentinel-2A data had been downloaded by user communities. Sentinel-2B... Sentinel-2B on a Vega from Kourou (instead of Rockot from Plesetsk). Sentinel-2B could be launched as early as February. The Sentinel-2C and -2D production, to eventually replace the operational Sentinel-2A... life, continues according to plan. Sentinel-3 Sentinel-3A satellite was launched on... Qualification Status Review completed, the Sentinel-3C and -3D spacecraft development... of the equipment is authorised. Sentinel-4 Sentinel-1A in space, fragment impact indicated... Airbus Defence & Space. → in progress Sentinel-5 Sentinel-5 Precursor The satellite has been... (LCT), using the LCT on Sentinel-1A as a spaceborne counter terminal. This... followed by user commissioning of Sentinel-1A as the first commercial user... SMOS AEOLUS SWARM EARTHCARE BIOMASS SENTINEL-1 SENTINEL-2 SENTINEL-3 SENTINEL-5 PRECURSOR SENTINEL-6 TELECOMMS/NAVIGATION PROGRAMMES ALPHASAT... 2014 / SENTINEL-1B LAUNCH APR 2016 LAUNCHED 23 JUN 2015 / SENTINEL-2B FAR NOV 2016 LAUNCHED SENTINEL-3A 16 FEB 2016 / LAUNCH SENTINEL...



Дата загрузки: 2017-04-09
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0.02/5
... customer of the EDRS service (Sentinel 1A/B and 2A/B LEO satellites). This... customer of the EDRS service (Sentinel 1A/B and 2A/B LEO satellites). Hence... the Sentinel 1A and 2A LEO satellites of the GMES programme. Sentinel 1A is..., night and all weather), whereas Sentinel 2A is a multi-spectral high... GEO nodes and operating in Sentinel / Advance mode. low data rate... presented in Table 1 for the Sentinel mode and the Advanced mode... for the so-called Sentinel mode (e.g., for Sentinel 1A and Sentinel 2A) and 1.8 Gbps... (c) ICSOS 2012. All Rights Reserved. Sentinel mode 5.4 10.8 5 Proc. International Conference... LCT embarked on the Alphasat, Sentinel S1A / S2A and the EDRS... of LCTs for Alphasat and Sentinel 1A/2A. To verify that the... for Sentinel 1 and Sentinel 2 is managed by ESA as part of the Sentinel... the LEO LCTs on board Sentinel 1A/2A satellites. It will demonstrate... pre-operational experiments between Sentinels 1A/2A satellites and Alphasat (i.e., EDRS..., whereas the launch of Sentinel 1A and Sentinel 2A satellites is expected in... (e.g. Alphasat) or lower altitude vehicles (e.g. Sentinel 1A, Sentinel 2A). • IOV with LEO user... LCTs on board the LEO Sentinel 1A/2A satellites will be used... LEO Sentinel 1A/2A satellites planned after the launch of the first Sentinel. The payload data rate requirement for Sentinel 1A/2A satellites... these experiments with Alphasat and Sentinel 1A/2A satellites are: • • 7 Conclusion ESA... GMES satellites Sentinel 1A and 2A as first customers, followed by Sentinel 1B...



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0.1/5
... 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... imaging. 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... data are made available online. Sentinel-1A data are available as follows... 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... 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 constellation Pleiades-1A/1B UK-DMC2... Systematic Sentinel-2/-3 data supply MR_IMAGE_2015 MR_IMAGE_2018 Missions Spot-5, Resourcesat-2 Sentinel-2A Systematic Sentinel... 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... meet EFFIS requirements. SPOT-5, Resourcesat-2, Sentinel-2A SPOT-5, HRVIR, 10m Resourcesat... - 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...://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-X - HR1...) - C band : Sentinel-1A, Radarsat-2 - X band : COSMO-SkyMed, TerraSAR-X - Single/Dual SENTINEL- 1: - Interferometric Wide...-X data are used to complement SENTINEL- 1A by providing gap coverage over...: 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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0.06/5
... performing the first application of Sentinel-1A InSAR data to Australia. The... of Sentinel-1A data. Despite this limited observation period, verification of Sentinel-1A with... datasets demonstrates the ability of Sentinel-1A to detect small-magnitude deformation... European Space Agency (ESA) launched Sentinel-1A, the first half of a two...-real-time, open-access basis. Sentinel-1A data have since been used... during the initial phase of Sentinel-1A. However, only a limited spatial coverage... then describe an application of Sentinel-1A data to the Perth Basin..., whilst demonstrating the applicability of Sentinel-1A to measure small-magnitude deformation... InSAR studies regional survey Sentinel-1A Ascending > 10 images Sentinel-1A Descending > 10 images... of writing, more than 10 Sentinel-1A scenes have been acquired. The... by the grey box. The Sentinel-1A scene covers the whole region... Basin using temporally- and spatiallyoverlapping Sentinel-1A (C-band: λ ∼ 56 mm) and TerraSAR... ratio [45]. 4.1. Sentinel-1A and TerraSAR-X Datasets Over Perth, Sentinel-1A acquisitions were made... this study. Sentinel-1A data are provided via the online Sentinel-1 Scientific Data... same time period as the Sentinel-1A dataset to within four days... in March 2016. Unlike the Sentinel-1A dataset, all imagery was acquired... have a higher spatial resolution than Sentinel-1A (∼3 m pixels), but cover a smaller area... in the ISCE software. For Sentinel-1A imagery collected using the TOPS... whilst avoiding phase offsets. Firstly, Sentinel-1A IW SLCs that are processed... east of the TerraSAR-X and Sentinel-1A scenes. The short-wavelength (<10... total, we produced 11 consecutive Sentinel-1A interferograms and 21 consecutive TerraSAR... comparable, with a 14% reduction for Sentinel-1A and 13% reduction for TerraSAR... to its longer sensor wavelength, Sentinel-1A interferograms are ∼20% more coherent... Fremantle (Figure 2). Incoherence in the Sentinel-1A dataset also occurs over forests.... Interferogram standard deviation [mm] TerraSAR-X Sentinel-1A A. 10 14 9 12 8 7 10 6 8 5 4 6 14...-maps produced for the overlapping Sentinel-1A and TerraSAR-X datasets show comparable... a b Sentinel-1A −31.73 Profile x PERT HIL1 C. c1: Lake Jandabup c2 a −31.8 Sentinel-1A c1 20 D. 10 0 −10 Sentinel-1A TerraSAR-X cGPS −20... rate-maps for (A) 11 consecutive Sentinel-1A interferograms covering 27 August 2015... datasets, verifying the application of Sentinel-1A with independent evidence from TerraSAR... between the time of the Sentinel-1A and TerraSAR-X acquisitions and the... datasets: the maximum displacements for Sentinel-1A are beyond the extent of... the values of profile x for Sentinel-1A against those for TerraSAR-X demonstrates... are identified in both the Sentinel-1A and TerraSAR-X deformation rate-maps...-systematic atmospheric banding in the Sentinel-1A dataset in this part of... the correlation between profile y from Sentinel-1A and TerraSAR-X shows that, whilst... Indian Ocean 10 Sentinel-1A E. Swan Valley subsidence B. 20 0 Subsidence Sentinel-1A Hillarys subsidence... −20 −20 −10 0 10 Profile x: Sentinel-1A [mm/y] 20 Profile y: TerraSAR-X [mm... −20 −20 −10 0 10 Profile y: Sentinel-1A [mm/y] 20 Figure 5. Profiles of... top panels (A,D) are profiles through Sentinel-1A data, and the middle panels.... Time series from TerraSAR-X and Sentinel-1A show comparable results, although overall... days, we directly compare the Sentinel-1A measurements to TerraSAR-X. In cases... is greater, we compare the Sentinel-1A result to the average of... first acquisition date [mm] −0.4 −0.6 −30 B. Sentinel-1A TerraSAR-X 0 Unconfined Aquifer 0 Lake Gnangara... governed by the availability of Sentinel-1A data. Whilst it is not... ± 1.30 2005–2012 3.12 ± 0.92 Sentinel-1A acquisition strategy for data in... (0.82 y) 24 (0.78 y) 33 (1.08 y) Sentinel-1A/B acquisition strategy over Europe (6-day...-I corrected interferograms is ∼9 mm for Sentinel-1A and ∼5 mm for TerraSAR-X. For... acquisitions. We include results for Sentinel-1A at the acquisition frequency of... intervals) and the current combined Sentinel-1A and -1B acquisition frequency over... rate. However, neither TerraSAR-X nor Sentinel-1A are able to detect deformation... at PERT or HIL1, with Sentinel-1A requiring 1.38 years to detect... continuous Sentinel-1A acquisitions over the Perth Basin. For the newly-implemented Sentinel... at the full repeat of Sentinel-1A and -1B. Identifying and measuring... over the short 0.7-y observation period, Sentinel-1A acquisitions over the Perth Basin... than the duration of the Sentinel-1A dataset and the required detection... performing the first application of Sentinel-1A InSAR data to Australia from... period is short (0.7 y), verification of Sentinel-1A with independent TerraSAR-X and continuous... subsequent targeted studies. With both Sentinel-1A and TerraSAR-X, we observe broad... observations demonstrate the ability of Sentinel-1A to detect small-magnitude deformation... for providing open access to Sentinel-1A data via the Sentinels Science..., Texas, observed by time series Sentinel-1A SAR interferometry (preliminary results). Remote...



Дата загрузки: 2017-03-10
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0.16/5
... status  The Sentinel-1A routine operations are on-going  Sentinel-1B has been... on-going – see next page  Sentinel-1A data can be accessed from... all land areas worldwide. Specific Sentinel-1A acquisitions are being temporarily planned... support the commissioning phase of Sentinel-1B for cross-calibration. An...: https://sentinels.copernicus.eu/web/sentinel/missions/sentinel-1/observation-scenario  The detailed....copernicus.eu/web/sentinel/missions/sentinel-1/observation-scenario/acquisitionsegments  Sentinel-1A responded to the... been verified that all potential Sentinel-1A acquisitions covering the earthquake that... days  The operational use of Sentinel-1A data by the Copernicus Marine... CleanSeaNet service the use of Sentinel-1 imagery in quasi-real time...  The EDRS-A - Sentinel-1A user commissioning is on-going  The Sentinel-1A spacecraft is...-2 OCN products and made available. Sentinel-1 IW and EW Level-2 OCN... report, more than 653,000 Sentinel-1A products are available on-line...  Continuation of Sentinel-1A routine mission operations  Continuation of EDRS-A - Sentinel-1A user commissioning … /… Report prepared by the ESA Sentinel-1 Team - Mission... – 22 August 2016 Sentinel-1B Commissioning Phase  Sentinel-1B was launched on... from Kourou, French Guiana  The Sentinel-1B launch time-lapse video....int/spaceinvideos/Videos/2016/05/Sentinel-1B_prepares_for_liftoff_April_2016  The Launch and Early... Data Ground Segment  The first Sentinel-1B images were published on....int/Our_Activities/Observing_the_Earth/Copernicus/Sentinel1/Sentinel-1B_delivers  The satellite Commissioning Phase...-board verification has been completed  Sentinel-1B reached its orbital location... 16 June 2016, synchronised with Sentinel-1A at 180 deg. in the... track of +/-120 meters  Sentinel-1B and Sentinel-A data were combined to....esa.int/Our_Activities/Observing_the_Earth/Copernicus/Sentinel-1/Sentinel1_satellites_combine_radar_vision  The Star Tracker inter... and Antenna Model verification  The Sentinel-1B commissioning phase activities are... Review Outlook  Continuation of the Sentinel-1B Commissioning Phase  Continuation of... performance verification activities  Continuation of Sentinel-1B/Sentinel-1A Cross-calibration  Preparation activities... Report prepared by the ESA Sentinel-1 Team -