Спутник ДЗЗ. Envisat 1. [Редактировать]

Cпутник, построенный Европейским Космическим Агентством для исследования Земли из космоса. На момент середины 2007 года являлся и является до сих пор самым крупным спутником, запущенным Европейским космическим агентством (ЕКА).На борту Энвисат несёт девять инструментов, собирающих информацию о суше, воде, льде и атмосфере, используя различные способы измерения.

Полезная нагрузка:

  • ASAR (Advanced Synthetic Aperture Radar) наблюдает Землю в микроволновом спектре от 4 до 8 ГГц. Этот инструмент позволяет отслеживать изменение высоты поверхности с субмиллиметровой точностью. 
  • MERIS (MEdium Resolution Imaging Spectrometer) — спектрометр, исследующий свет, отражаемый Землёй (поверхностью и атмосферой). Основная цель спектрометра — изучать цвет океана, например для того, чтобы дать оценки концентрации хлорофилла и твёрдых частиц. 
  • AATSR (Advanced Along Track Scanning Radiometer) измеряет температуру морской поверхности. 
  • RA-2 (Radar Altimeter 2) — радар, наблюдающий два электромагнитных диапазона: Ku-диапазон и S-диапазон (2-4 ГГц); служит цели изучения океанской топографии, наблюдения за льдом и измерения высот суши. 
  • MWR (Microwave Radiometer) измеряет количество водяного пара в атмосфере и содержание жидкой воды в облаках. 
  • DORIS (Doppler Orbitography and Radiopositioning Integrated by Satellite) — микроволновая следящая система, выполняющая задачу точного позиционирования спутника. 
  • GOMOS (Global Ozone Monitoring by Occultation of Stars) наблюдает за звёздами сквозь атмосферу Земли; по изменению их цвета можно много сказать о количестве различных газов, например озона, и их распределению по высоте. 
  • MIPAS (Michelson Interferometer for Passive Atmospheric Sounding) — фурье-спектрометр для среднего инфракрасного диапазона; этот диапазон важен для слежения за газами, играющими большую роль в климате Земли. 
  • SCIAMACHY (SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY) — спектрометр, который сравнивает свет, идущий от Солнца, со светом, отражаемым Землёй; это позволяет получить информацию об атмосфере, через которую проходит отражённый свет.   

 

 

 

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
127386НайтиНайти
2EnvisatНайтиНайти
3Environmental SatelliteНайтиНайти

Дополнительная классификация

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

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

#Новостная лента.
12012-03 - 2012-04. Аппарат официально признан утерянным Тэги: Envisat 1
22012-04-08. Потеряна связь с аппаратом. Причина неизвестна. Тэги: Envisat 1
32015-09-22. Канада рассматривает варианты помощи европейскому космическому агентству по сведению с орбиты космического аппарата Envisat .
Канада может сыграть заметную роль в сведении с орбиты космического европейского космического аппарата Envisat. При этом, согласно предложению канадского комического агентства, работы по уводу спутника с орбиты возможно будет выполнить при помощи разработанных в стране технологий изготовления роботизированных манипуляторов. Возможный срок создания космического аппарата с манипулятором составляет 2021 год. Головным исполнителем работ по систему должна будет выступать MDA. В агентстве также отметили, что существующая орбита аппарата подразумевает, что он будет находиться на ней около 150 лет, а с учетом его габаритов в случае разрушения он может создать большое число обломков. К особенностям предложенной миссии также возможно отнести и то, что аппарат вращается вокруг свой оси, а, следовательно, его захват манипулятором является достаточно сложной задачей.Тэги: Envisat 1Космическое агентство Канады

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг8211
2Масса (сухая), кг.7821
3Спектральный диапазон, см5.6
4Ширина полосы съемки (среднего разрешения (Image Mode)), км100
5Ширина полосы съемки (низкого разрешения (Wide Swath Mode)), км200
6Ширина полосы съемки (глобального мониторинга (Global Monitoring Mode)), км400
7Периодичность съемки, сутки2.5-35
8Скорость передачи данных на наземный сегмент, мБит в секунду105
9Формат файловCEOS
10Полезная нагрузка 1xSCIAMACHY-надир
11Полезная нагрузка 1xSCIAMACHY-лимб
12Полезная нагрузка 1xRA-2
13Полезная нагрузка 1xMWR (Envisat)
14Полезная нагрузка 1xMIPAS
15Полезная нагрузка 1xMERIS
16Полезная нагрузка 1xLRR (ESA)
17Полезная нагрузка 1xGOMOS
18Полезная нагрузка 1xDORIS
19Полезная нагрузка 1xASAR
20Полезная нагрузка 1xAATSR
21Мощность, Вт6500
22Мощность, Вт6500
23Радиометрическое разрешение, бит на пиксель8
24Поляризация (среднего разрешения (Image Mode))одинарная (по выбору — VV или HH); двойная (по выбору — VV/HH или HH/HV или VV/VH)
25Поляризация (низкого разрешения (Wide Swath Mode))одинарная (по выбору — VV или HH)
26Поляризация (глобального мониторинга (Global Monitoring Mode))одинарная (по выбору — VV или HH)
27Номинальное пространственное разрешение (среднего разрешения (Image Mode)), м30
28Номинальное пространственное разрешение (низкого разрешения (Wide Swath Mode)), м100
29Номинальное пространственное разрешение (глобального мониторинга (Global Monitoring Mode)), м1000
30Диапазон углов съемки, градусов15–45

Характеристики орбиты

#ХарактеристикаЗначение
1САС (планируемый ), год5

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2002-009A

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Оператор Европейское космическое агентство

Информация об удачном запуске

#ХарактеристикаЗначение
1Космодром Космодром Куру
2Дата пуска2002-03-01 at 01:07:00 UTC
3Полезная нагрузка 1xEnvisat 1
4Ракета-носитель 1xАриан 5G

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


Дата загрузки: 2016-11-24
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...-1 - TOPEX/Poseidon consistency Y. Faugere Jason-1 / Envisat Cross-calibration Short introductions to..., N. Picot, J. Lambin Jason-1, Topex And Envisat Data S. Labroue, M. Ablain, J. Dorandeu, Comparison... SSB-4 Sigma0 Blooms In The Envisat Radar Altimeter Data Pierre Thibaut..., S. Bijac, P. Prunet, E. Jeansou CV-7 Jason-1 / Envisat Cross-calibration. Y. Faugere, J. Dorandeu, N. Granier..., J. Choe, E. Leuliette CV-15 The Envisat/MicroWave Radiometer five years after... Hurricane Juan: A triple view from Envisat Graham Quartly, Trevor Guymer SC... Topex/Poseidon, Jason-1, ERS and Envisat satellites observations. These data, together...-2, TOPEX, Poseidon, GFO, Jason1, and ENVISAT, with data widely upgraded by... TMR replacement product. 39 Jason-1 / Envisat Cross-calibration Yannice Faugere(1), J. Dorandeu... comparisons with TOPEX/Poseidon and Envisat have been performed from the.../Poseidon mission, cross calibration with Envisat has become even more relevant.... A global cross-calibration analysis between Envisat and Jason-1 data has been... four years of Jason-1 and Envisat altimetric observations over ocean are... system performance. New versions of Envisat and Jason-1 products have been... altimeter (Jason-1, TopexPoseidon, GFO and Envisat). One uses the altimeter pass... mission, a microwave radiometer (ERS2/MWR, Envisat/MWR, Jason/JMR, and TOPEX... with Topex and coherence with Envisat it is important to keep.../Poseidon, Geosat Follow-on, Jason-1, Envisat, and the future Cryosat missions... content of Jason-1, Topex and Envisat data Yannice Faugere (1), A. Ollivier(1), P. Thibaut... Height (SSH) signal of Jason-1, Envisat and Topex. This signal includes... of the SSH of Jason-1, Envisat, and Topex are compared. Several... improvement of the consistency between Envisat and Jason-1 HF content using... anomaly products from Jason1 and Envisat together with in situ observations... the performance of Jason and ENVISAT allowed a better understanding the observing... data from the altimeters (Jason, Envisat and GFO), radiometers (AVHRR and..., GEOSAT Follow-On, Jason and ENVISAT, have been collected, checked and..., for which TOPEX, GFO and ENVISAT data are available, has been..., GEOSAT Follow-On, Jason and ENVISAT, have been collected to build... the data from Jason and ENVISAT. Specific future application developments are... in preparation for the post-ENVISAT mission and in order to... estimated from Topex, Jason and Envisat altimeters shows that about 2-4% of... in preparation for the post-ENVISAT mission and in order to... tandem period, GFO, ERS, and ENVISAT missions. With the unique opportunity... altimetric dataset (TOPEX/Poseidon, Jason-1, Envisat, GFO) at a 10-20 Hz... missions (TOPEX/Poseidon, Jason-1, ERS, EnviSat and GFO), together with geographical... Jason) and ERS (followed by Envisat) has allowed the study of... lock problem. The use of ENVISAT data and ICESat laser altimetry... correction to be included in ENVISAT products at GDR level is... the ENVISAT measurements. Consequently, Topex/Poseidon products become coherent with ENVISAT Geophysical...”, “Ice2” and “SeaIce” in the ENVISAT processing. Although not specifically dedicated.... Hurricane Juan: A triple view from Envisat Graham Quartly (1), Trevor Guymer (1) National... a hundred years. A few days earlier Envisat recorded observations of it whilst... altimeter missions are currently operating (ENVISAT, JASON ) and others are planned... TOPEX altimeter data. 147 The Envisat/MicroWave Radiometer five years after..., LOCEAN, France The European satellite Envisat has been launched on 1st... 109), and adjacent to an ENVISAT pass, on the isle of... our efforts to include the ENVISAT and GFO missions. We are.... 153 Sigma-0 blooms in the Envisat Radar Altimeter data Pierre Thibaut... done for many cycles of Envisat data distributed along the year... supplement Jason, TOPEX/POSEIDON(T/P), and Envisat, providing a different synoptic sampling of... all past altimeter data: Jason-1, T/P, ENVISAT, GFO, ERS1/2 and GEOSAT. These... in preparation of the post-ENVISAT mission and in order to...



Дата загрузки: 2016-11-03
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... Gerais (Brazil) Satellite altimeters onboard Envisat and SARAL (Altika) are routinely... large footprint (approximately 8 km for Envisat and 4 km for Altika). Virtual... recording frequency than its predecessor (Envisat), its tracker tended to fail... results. Altimeters on-board the Envisat and SARAL(Altika) satellites are... different years. Altimetry data from Envisat and SARAL/Altika were obtained... and reservoir database. We combined Envisat and SARAL/Altika altimetry data... scheme was applied to an Envisat/ASAR image over the Gulf... Landsat-5; ETM+ Landsat-7; OLI Landsat-8; Envisat MERIS and ASAR. Landsat data... zones with predomination of cyanobacteria. Envisat MERIS were used to compile... rough estimates of algae content. Envisat ASAR data were compared with... internal waves involved data from Envisat ASAR and MERIS, Terra/Aqua... of sea surface obtained by Envisat ASAR and ERS2 SAR. Remotely... data from all passes of Envisat and ERS-2 satellites over the... from different sensors (obtained by Envisat ASAR, Landsat-8 OLI, Landsat-7 ETM... characteristics. 9240-28, Session 6 From ENVISAT RA-2 to CRYOSAT SIRAL: validation... continental shelves. The ESA mission ENVISAT was launched in March 2002... previous pulselimited altimeters, such as ENVISAT RA-2. The Spanish-funded ALCOVA... mapping based on ERS-1/2 and ENVISAT imagery. IEEE International Geoscience and... by InSAR using JERS-1/SAR, ENVISAT/ASAR, Fine-beam and ScanSAR... mapping based on ERS-1/2 and ENVISAT imagery. IEEE International Geoscience and... the C-band acquisitions from SAR (Envisat/ASAR) and from real aperture... SAR data from ERS-1/2 and ENVISAT ESA satellites, and X-band high... Paulo region through Landsat and Envisat/ERS time-series Lorenzo Iannini...-free Landsat TM and ERS/ENVISAT SAR C-band (in stripmap mode... dataset comprises a set of 64 ENVISAT/ERS acquisitions, mostly in VV...



Дата загрузки: 2016-11-08
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... Atmospheric Sounding) instrument on the Envisat (Environmental satellite) satellite has provided... the ESA (European Space Agency) Envisat (Environmental satellite) satellite (Fischer et... until 8 April 2012, when an Envisat anomaly occurred resulting into the... was one of the first Envisat instruments to be fully operational... that was used during the Envisat mission for both the near... the MIPAS instrument on board ENVISAT, ECMWF technical memorandum No. 428..., M.: The MIPAS2D database of MIPAS/ENVISAT measurements retrieved with a multi-target... support for global validation of ENVISAT data products, 2012. Dudhia, A.: Reference.../guest/missions/esa-operational-eomissions/envisat/news/-/asset_publisher/x9cY/content/mipaslevel... as observed by MIPAS on Envisat during the polar winters in..., D. P., Volk, C. M., von Clarmann, T., and Riese, M.: Envisat MIPAS measurements of CFC-11... in constituent retrievals for MIPAS/ENVISAT measurements, Atmos. Environ., 34, 5329... the ESA processor from MIPAS/ENVISAT atmospheric limbemission measurements, Atmos. Chem..., R., Abdalla, S., and Engelen, R.: Assimilation of ENVISAT data for numeric weather prediction..., M., and Zhang, G.: Validation of MIPAS-ENVISAT H2 O operational data collected between...



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..., il satellite di monitoraggio ambientale Envisat, la missione SMOS per l’umidit... ottici ad alta risoluzione: MERIS (Envisat); per l’ambiente Vegetation (SPOT); per... RUOLO IMPORTANTE IN ENVISAT Lanciato nel febbraio del 2002, Envisat è il pi... di componenti per il satellite Envisat dell’ESA: MERIS (Spettrometro per... di terra per gli utenti Envisat PDS (Payload Data Segment). c) ORFEO...: Poseïdon 1-2-3, Siral 1-2, ERS 1-2, CASSINI, ENVISAT RA2 o Radiometria a Microonde: Radiometro a Microonde...), Radiometro CASSINI, Radiometro a microonde (MWR) ENVISAT o Sonde Radar: MARSIS (Mars Express... segmento dati del payload di Envisat (PDS). Questo know-how deriva.../X-SAR (missione di interferometria), HELIOS, ENVISAT, e i segmenti dati per la sonda...



Дата загрузки: 2017-01-16
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... and vertical accuracy. Therefore, ESA Envisat and CryoSat-2 radar altimetry data... errors. Two results based on Envisat data are presented here: The.... The model here consists of Envisat and CryoSat-2 data from 2010... studiet kombineres radardata fra ESAs Envisat og CryoSat-2 med laserdata fra... topografiske fejl. To resultater baseret på Envisat præsenteres her: De første... opstår. Denne højdemodel består af Envisat- og CryoSat-2-data fra 2010... altimetry . . . . . . . . . . . . . . . . . . . . 25 2.5 Radar altimetry . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2.6 2.5.1 Envisat . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 2.5.2 CryoSat-2 . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Airborne and... Sheet elevation change detection 118 B Envisat derived elevation changes of the... correction . . . . . . 11 2.4 ICE-1 retracker . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.5 Envisat waveform parameters from the ICE... Pulse-limited footprint . . . . . . . . . . . . . . . . . . . . . . . 24 2.11 Envisat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2.12 CryoSat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 2.13... 10.1 Comparison between ICESat and Envisat RT SEC results from 2003... 2.2 Pulse-limited footprint info for Envisat . . . . . . . . . . . . . . 29 2.3 Envisat facts 2.4 CryoSat-2 facts . . . . . . . . . . . . . . . . . . . . . . . . . . . 33..., due to the application of Envisat RA-2 retrackers, reprocessed Precise Orbit... of observations from ERS-1 and -2, Envisat, CryoSat-2, and, in the future... for a selected region using either Envisat or ICESat data. The region... the measurement location, and for Envisat relocations can be as large... of relocation methods applied to Envisat and CryoSat-2 LRM data near... first RT results developed from Envisat data (2002 – 2010) as well... of such a model from combined Envisat and CryoSat-2 RA and ICESat... RA observations stem from ESA’s Envisat and CryoSat-2, while the spaceborne..., 1997, and 2003, respectively, while Envisat operated from 2002 – 2012 and... of radar altimetry Figure 2.5 An Envisat waveform (blue) and the ICE... Weather Forecasts (ECMWF) for both Envisat and CryoSat-2 data. The dry... year with approximately 50 cm. Envisat data are corrected using the.... (2015) compared colocated ICESat and Envisat results (2003 – 2009) over the... layer to remain constant so Envisat measures a near-zero trend. The... the above are provided for Envisat and CryoSat-2 data in Sections... measurements. Considering numbers typical for Envisat, i.e. H = 800 km and B = 320 MHz... 1995, seven years later came Envisat, and CryoSat2 was launched in...-accuracy while comparisons of contemporary Envisat and ICESat data over Greenland... with Envisat’s RA-2 instrument and in CryoSat’s LRM and SARIn modes. Envisat... 2.5 2.5.1 Radar altimetry Envisat On March 1st 2002, ESA launched Envisat (Fig. 2.11... corrections for ionospheric range delays. Envisat operated in three modes: The... 206 2.5 Radar altimetry Figure 2.11 Envisat in orbit (European Space Agency... 2.2 Bandwidths and calculated values for Envisat RA-2 pulselimited footprints assuming a flat... µs 128 Table 2.3 Facts about the Envisat mission. As no data have.... Given a nearly similar altitude as Envisat and a bandwidth of 320 MHz... based on a combination of ERS, Envisat, CryoSat-2, and Sentinel-3 data to... over a given region using either Envisat or ICESat data. The latter... provided and three based on Envisat data. The latter are retracked... solutions cover the period of Envisat’s Page 38 of 206 3 Background... GrIS and are based on Envisat and ICESat data, respectively. Both... the much smaller ICESat and Envisat footprints means that the resulting... on a 5 × 5 km RT solution from Envisat. A key finding arises from validating... divided into segments. By binning Envisat data into the segments, SEC... 2009. During this time both Envisat and ICESat were operational, just... ERS-1 and -2 as well as Envisat. Khvorostovsky (2012) used data from... is based on concurrent ESA Envisat and CryoSat-2 radar data merged... (Part I), namely SEC estimates from Envisat derived using the RT technique...-2 = July – September 2010 LRM, SARIn Envisat RA-2 = April – September 2010 ICESat... increase the spatial data coverage, Envisat RA-2 Geophysical Data Records (GDR... ceasing operation in 2009. The Envisat data are retracked with the... follow the subsequent discussion. 1. Relocate Envisat, LRM, and SARIn data. 2. For... see Appendix G. The relocation of Envisat and CryoSat-2 LRM data is... LA data to correct the Envisat and CryoSat-2 surface elevations is... collocation to the CryoSat-2 and Envisat elevation residuals, dH: Correlation length.... Therefore, the combination of contemporary Envisat and CryoSat-2 data is highly... topography when merging the corrected Envisat and CryoSat-2 data with laser... model is introduced after the Envisat, LRM, and SARIn heights have... 7.3 Locations of dH estimates along Envisat and CryoSat-2 LRM ground-tracks... D) compares two techniques for relocating Envisat and CryoSat-2 LRM data near...



Дата загрузки: 2017-01-23
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..., e-mail: andreas.rudolph@esa.int (2) Envisat Post Launch Operations Support, TERMA..., email: eric.doyle@esa.int (5) Envisat Operations Engineering, VEGA IT GmbH... when ESA’s Earth Observation Mission, ENVISAT, had been launched, the idea... Aerospace Exploration Agency (JAXA) and ENVISAT was borne. Kodama was also... show that science data from ENVISAT can be transmitted to Kodama... one of JAXA’s ground stations. ENVISAT is equipped with a Ka-Band... reports on the results of Envisat-Kodama test, which was conducted... third stages was to transmit ENVISAT science data via Kodama to... the link. The _____________________________________________________ Proc. ‘Envisat Symposium 2007’, Montreux, Switzerland 23... also present some of the ENVISAT images that were acquired via..., low earth orbit (LEO) the ENVISAT satellite has now successfully completed...-ground downlink capability in Xband ENVISAT is equipped with a Ka-Band... amount of data returned by ENVISAT has multiplied since the Ka... test was to demonstrate that ENVISAT payload data could be transmitted... real-time science data from ENVISAT’s ASAR and MERIS instruments to... - ESRIN ENV ISA T PD S Figure 1: Envisat-Kodama Inter-Operability Demonstration Test... ongoing nominal operations of both ENVISAT (especially its operations with Artemis... be supported by Kodama, whereas ENVISAT nominally uses two simultaneously; one... for JAXA to handle the ENVISAT Ka-Band frequencies to be... test was to prove that ENVISAT and Kodama steerable Ka-Band... the RF signal transmitted by ENVISAT at two different frequencies (but... of the signal transmitted by ENVISAT was unimportant. This removed the... were: Identifying Kodama visibility by ENVISAT outside of Artemis visibility (see... for the test; logistics for Envisat-Kodama orbital information exchange plus... be used for the test. ENVISAT’s capability to transmit on two... onto and receiving data from ENVISAT on the main Ka-Band...) Vs Kodama (Black) Visibilties from ENVISAT (TSUKUBA highlighted Orange) In principal... data, received by Kodama from ENVISAT, to JAXA TKSC for both... rate instrument science packets) from ENVISAT’s High Speed Multiplexer (HSM) on... for the Envisat–Kodama link test was generated based on ENVISAT and... to avoid overlap with nominal Envisat– Artemis communication segments. An additional... identify suitable segments in consecutive ENVISAT orbits around the area of... the visibility functions of the ENVISAT CFI Mission Software. The selection... used as input to the ENVISAT CFI DRSPOINT software that generates... 23818 due to conflict with Envisat User Request) Prior to test... of ASAR Wide Swath for Envisat Orbit 23818 In addition to... using software, currently used for Envisat-Artemis communications, to generate the... be easily overlaid onto the ENVISAT activities and facilitated the identification... test stage ENVISAT Orbit Prediction (ORB) files, generated by ESOC ENVISAT Flight... most accurate positional data for ENVISAT for the segments to be... be observed in performing routine ENVISAT operations. Fig. 6 gives an overview... MPS in parallel; the nominal ENVISAT operations being maintained on the... to pass through the nominal ENVISAT planning chain and Kodama requests... ASAR operations between the nominal ENVISAT mission and the Kodama tests... nominally containing telecommands for a single ENVISAT orbit. The telecommands specific to... with those related to nominal ENVISAT operations. demodulator to demodulate the... evident when creating the merged ENVISAT Telecommand Schedule, as the majority... to those used operationally for ENVISAT science data acquisition at all... due to the GSE itself. ENVISAT’s Payload Data Segment (PDS) User..., has been receiving data from ENVISAT via Artemis in geostationary orbit... by the contact duration between ENVISAT in low-earth orbit and... merged schedules was transferred to ENVISAT as part of the routine... generation. For each test segment, ENVISAT was outside of nominal ground... of execution success from an ENVISAT perspective could only be performed... Interface Test using a number of Envisat-Kodama link segments transmitting data... early September (due to an ENVISAT anomaly), a single test segment was... channel 2 (27.10 GHz). The ENVISAT demodulator locking onto the signal... and without interference when both ENVISAT return link frequencies were being... segment was a trial pass with ENVISAT instruments trained over the southern... as an anomaly on-board ENVISAT (not related to the test.... 7. CONCLUSIONS All objectives of the Envisat-Kodama Ka-Band InterOperability Demonstration..., were pulled through. For this ENVISAT data processing and recording equipment... ENVISAT. Through analysis of the received data, the quality of the Envisat..., which are used routinely for ENVISAT data return to ground. The... ENVISAT instruments acquired during Stages 2 & 3 of the test: • Fig. 9 shows an ENVISAT... mountain; • Fig. 10 provides a MERIS (ENVISAT’s imaging spectrometer), image of Hokkaido... JAXA’s DRTS and the ESA’s ENVISAT, AIAA ICSSC April 2007 Data... of Hokkaido REFERENCES 1. A.Rudolph, F.J.Diekmann, ENVISAT Mission Operations – Flight Experience and...



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...: 1 Rev. 0.2 Page: 1 ENVISAT Calibration and Validation Plan Prepared by: Envisat Cal-Val.......................................................................................................... 53 6.2 PLAN AND METHODOLOGY FOR ENVISAT ......................................................................................... 54 Doc: PO-PL-ESA... Sensing Satellite European Space Agency Envisat Stratospheric Aircraft and Balloon Campaign... Confidence Data Payload Data Segment (Envisat) ASAR Processing Facility Principal Investigator... and Tables FIGURE 1.1: SCHEDULE FOR ENVISAT S CALIBRATION / VALIDATION ACTIVITIES AND THE... THE PROPOSED GROUND TRACKS FOR ENVISAT ......................................................................................................................................................... 49 T ABLE 5.1: CROSS-CALIBRATION OBJECTIVES... Envisat Calibration and Validation Plan defines the activities that will calibrate Envisat... available from the Envisat worldwide web site: http://envisat.estec.esa.nl... for the Exploitation of the Envisat Data Products” in 1998. More... of the Envisat validation relies on these important contributions. Envisat is scheduled... the co-ordination of the Envisat cal/val activities, the following... Workshop (L+9m). The schedule for Envisat’s cal/val activities and product... products calibration Figure 1.1: Schedule for Envisat s calibration / validation activities and the... quality control of such data. Envisat data products are stored within... with data acquired for the Envisat mission. 1.2.1 Instrument Engineering Calibration Facility... macrocommands to be uploaded to Envisat. The structure of the IECF... downloading of Envisat data from the USF, • Test Envisat data handling software... is capable of reading all Envisat products. It includes basic ‘quick... and format definition of the Envisat products. 1.4.2 ESOV The Earth Map... coincide with the overpasses of Envisat and also of other satellites... and validation activities: PRE-LAUNCH • Envisat Calibration and Validation Plan (this... transponders will be optimised for Envisat. One mobile unit will be... commence after the launch of Envisat. 2.2.1 Pre-Launch Activities It is... Flevoland, and over the new Envisat ASAR transponders, will be undertaken... ASAR products 2.3 Wave Product Validation Envisat ASAR wave mode L1 and... measurements are collocated with the Envisat products being validated. Given the... chemistry instruments housed on-board Envisat measure overlapping sets of trace... species will be a feature of Envisat operations. As an example, figure... tuning of variables in the Envisat processing algorithms following early analyses... validation by comparison with non-Envisat correlative data. • • Figure 4.2 illustrates the... Campaigns The objective of the Envisat Stratospheric Aircraft and Balloon Campaign... as possible for the three Envisat Atmospheric Chemistry instruments whilst optimising...: 41 2001 J F M A M J J 2002 A S O N D J F M A M J 2003 J A S O N D J F M A M J J A S O N D N D Envisat Validation Workshop Envisat launch End of ESABC...: ASA: Aire sur l’Adour ESABC: Envisat Stratospheric Aircraft and Balloon Campaign... compare the campaign data to Envisat data, thus validating the algorithms... to compare their results with Envisat measurements interpolated to the specific... Numerical Weather Prediction Models (ECMWF) Envisat products relevant to meteorological applications... of the differences between the Envisat ‘meteo’ products and ECMWF’s assimilation... quantities. This will assist the Envisat instrument teams in the characterisation... quality and integrity of the Envisat ‘meteo’ products. It must also... used to interpolate the respective Envisat measurements in space and time... of the technique is operational Envisat atmospheric composition measurements assimilation. This... products, rather than for assimilating Envisat measurements. This approach is highly... in time and space to Envisat instrument observations. For routine measurements... be identified a posteriori from the Envisat and correlative datasets. Trace gas... columns and integrated profiles from Envisat. For ground-based profiles and... acquired for the validation of Envisat’s atmospheric chemistry sensors. Figure 4.10... (MWR) will contribute to the Envisat validation activities. These are capable... 35-day repeat orbit of Envisat, and logistic constraints that limit... The core objectives of the Envisat RA-2 and MWR Cross-Calibration... will unify the ERS and Envisat data. A relative calibration between ERS... of ERS-2. Relative biases between Envisat and JASON, TOPEX/POSEIDON and... results during the Envisat commissioning phase, ERS-2 will follow Envisat after 30... of measurements acquired by other Envisat instruments (mainly the altimeter) at...” Envisat orbits. Table 6.1: Tests for orbit verification 6.2 Plan and Methodology for Envisat... activities will be performed. The Envisat POD verification will have to... dealing with the interactions between Envisat and other altimetric missions e.g. the... Envisat findings, and how to take advantage of the fact that Envisat...



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... ERS Altimetry data set to ENVISAT standards (highlights) ........................................... 7 Geosat and GFO... The Antarctic Ice Sheet From Envisat Along Track Radar Altimetry .................... 10... of the Arctic Ocean from Envisat and ICESat ....................................... 46 A Factor of... ERS Altimetry data set to ENVISAT standards .............................................................. 60 Geosat and GFO... Programs in Satellite Altimetry .............................................................................................................. 62 Envisat Altimeter System: Long Term Monitoring... Homogeneous Orbits for ERS-1, ERS-2, Envisat, Cryosat-2, Jason-1 and Jason-2. ............. 63... ................................................................................................................................................................ 70 7-Year Calibration of the Envisat RA-2 Altimeter Sigma Nought ..................................................................................... 70... Statistical Blending Method ........................................................ 79 Analyzing ENVISAT RA-2 Waveforms before and after.... .............................................................................................................................................. 87 A Synthesis of 9 Years of Envisat Data over the Antarctic Ice.... ....................................... 89 Validation of ERS and ENVISAT Radar Altimetry for Ice Sheets... Variations in Altimetric Measurements from Envisat: Surfaces and Climate Conditions ...........................110... River Floods ............114 Analysis of Envisat Individual Echoes over Inland Water... River Discharge from Satellite Altimetry (ENVISAT) ...........................................................116 Water Level and Discharge... in the Mediterranean Sea from ENVISAT data ...............................................................................................................................................................121 Gral: An Altimetric... ERS-1, TOPEX/Poseidon, ERS-2, Jason-1, Envisat and OSTM/Jason-2 satellites together... performed between Envisat and Jason-1 highlighted a strong drift of Envisat global MSL... 2, Envisat, and ICESat. However, Greenland maps of dH/dt from Envisat and...-1, Topex/Poseidon, ERS-2, GFO, Jason-1, Envisat/RA-2, Jason-2, Cryosat-2, HY-2. Precise... altimetric satellites (TOPEX/Poseidon, Jason-1, ENVISAT and Geosat Follow-On) complemented... various generations of satellites (T/P, ERS-2, ENVISAT, Jason-2, CryoSat), sensors and retracking... the Topex / Poseidon (T/P), Jason-2 and Envisat satellites. We present this synergistic... of ageing altimetry satellites (Jason-1, ENVISAT). The Cryosat-2 altimeter is operated... and Bathymetry from CryoSat and Envisat Altimetry Sandwell, David1; Garcia, Emmanuel1... current altimeter missions, such as ENVISAT or CRYOSAT2 satellites, specific performances... tropospheric delay compared against the ENVISAT, Jason 1 and Jason 2 radiometric corrections... RA-2 calibration of σ° during the Envisat lifetime, a continuous monitoring was performed... (Topex/Poseidon), Poseidon2 (Jason-1), RA2 (EnviSat), SIRAL (CryoSat), Poseidon3 (Jason-2), SIRAL2... observing platforms such as ERS1/2, Envisat and Cryosat-2, comprises an observational... 2011, Envisat was transferred on a drifting orbit. The whole Envisat data set... all available information derived from Envisat mission for the scientific exploitation... elevations derived from ERS1/2 and Envisat radar altimetry data show unrealistically... den Bosch and O.Z. Zanife 2005. ENVISAT Radar Altimeter measurements over continental... den Bosch and O.Z. Zanife. 2005. ENVISAT Radar Altimeter measurements over continental... den Bosch and O.Z. Zanife. 2005. ENVISAT Radar Altimeter measurements over continental... for conventional altimeters (Jason 1/2 and Envisat/RA-2 instruments), Doppler altimeters (CryoSAT... missions (Jason-1, Jason-1 extended, Jason-2, Envisat, Envisat extended, Icesat and GFO) is... altimetry (Topex / Poseidon, Jason-1 & 2, GFO, Envisat, ERS2). The final objective is... using ENVISAT mission and/or Jason2, over a period including the full Envisat... Variations in Altimetric Measurements from Envisat: Surfaces and Climate Conditions Gilbert...-calibrated altimeter missions such as Envisat, Jason-1, Jason-2, Topex, Cryosat-2, etc.... Comparing different retracking algorithms of ENVISAT revealed that elevation ranges from... River Discharge from Satellite Altimetry (ENVISAT) Tourian, Mohammad J.; Riegger, Johannes; Bardossy... in the Mediterranean Sea from ENVISAT data Vergos, Georgios; Natsiopoulos, Dimitrios... - farther north than previous altimetric (e.g., Envisat) marine gravity fields. ARCS-2 improves... various satellite configurations (Jason1/2, GFO, Envisat, SARAL) Overall, the incremental 4DVAR... several altimetric satellites (T/P, Jason-1/2, ERS-1/2, ENVISAT) with an independent solution (time... sun-synchronous satellites (e.g., ERS-2 and Envisat), the complexity of environments, such...



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Chapter 2 ENVISAT – SCIAMACHY’s Host M. Gottwald, F.-J. Diekmann, and T. Fehr Abstract ENVISAT is Europe... payload. Orbit and attitude of ENVISAT determine the framework of SCIAMACHY.... As a polar, sun-synchronous satellite, ENVISAT provides a stable platform for orbiting...-board data handling capabilities. The ENVISAT ground segment consists of the... SCIAMACHY data follows the general ENVISAT data policy with the exception... copy of such data. Keywords ENVISAT • Orbit • Flight Operation Segment • Payload... to place SCIAMACHY onto the ENVISAT platform (Figs. 2.1 and 2.2) made it... a ‘derivative’ of the Columbus programme, ENVISAT is composed of the M. Gottwald...-orbit mission lifetime of 8 years ENVISAT generates a large data repository for... the AOI providers. Overall the ENVISAT instruments utilise various remote sensing... GOMOS (ESA 2001b), SCIAMACHY forms ENVISAT’s atmospheric mission. The three atmospheric... analyses. 2.1 ENVISAT Attitude and Orbit Fig. 2.1 Artist’s impression of ENVISAT in orbit...). Fig. 2.2 ENVISAT in ESTEC’s test facility (Photo: ESA). Table 2.1 ENVISAT characteristics ENVISAT parameters... Attitude and orbit of the ENVISAT platform are contributing to the... is three-axis stabilised with ENVISAT’s local relative orbital reference coordinate.... 2007). The attitude mode of ENVISAT for nominal operations offering the... amplitude of Æ3.92 occurs when ENVISAT passes the equator at ascending...-1 and ERS-2. Thus ENVISAT 2 ENVISAT – SCIAMACHY’s Host Table 2.2 The ENVISAT payload complement and... coordinate system specified in the ENVISAT mission. Platform and instruments use...-of-sight to the left. ENVISAT operations have to ensure that... correct for the Table 2.3 Nominal ENVISAT orbit Orbital parameters Semi-major... Manoeuvre – OCM). Orbital manoeuvres are 2 ENVISAT – SCIAMACHY’s Host executed by short... remain unchanged. 2.2 ENVISAT On-board Resources The total ENVISAT payload shares the.../s can be achieved. Only when ENVISAT is close to sunrise during... SCIAMACHY when observing a solar occultation. ENVISAT measurement data can be transmitted... Fig. 2.5 Schematic view of the ENVISAT on-board data handling. SCIAMACHY... the ENVISAT/ SCIAMACHY mission planning process by applying strict planning rules. 2.3 ENVISAT... the Ka-band link connects ENVISAT via the Artemis data relay... location of the orbital track. ENVISAT and its instruments are controlled... the PDS. FOS comprises the ENVISAT Flight Operation Control Centre (FOCC... is the responsible entity for ENVISAT measurement data. It is a Europe... product quality monitoring. 2.4 ENVISAT Data Products The ENVISAT ground segment concept defines... product level supported by the ENVISAT PDS. It represents the final... processed under the responsibility of ENVISAT data users. Their generation is... developed. 2 ENVISAT – SCIAMACHY’s Host 25 Fig. 2.6 The Europe-wide distributed ENVISAT ground.... 2.7 The ESA centres hosting major ENVISAT ground segment facilities with ESOC...). M. Gottwald et al. 2 ENVISAT – SCIAMACHY’s Host Table 2.4 ENVISAT ESA ground segment facilities... serving the atmospheric mission on ENVISAT is the D-PAC, located at... access are defined in the ENVISAT data policy. Data utilisation is... applications in support of the ENVISAT mission objectives including long-term... of the atmospheric sensors on ENVISAT access to SCIAMACHY, MIPAS and... responsibilities both for ESA as ENVISAT mission provider and DLR/NIVR... national agencies. General help on ENVISAT can be obtained via ESA... ENVISAT and its instruments. This request is supported by ESA’s dedicated ENVISAT website (http://envisat.esa.int/). Specific websites... Matatoros MA, Ventimiglia L, Suen D (2006) ENVISAT attitude and orbit control in... (1998) ENVISAT-1 Mission & System Summary. ESA Brochure, ESA ESA (2000) Envisat – MIPAS... ESA (2001a) ENVISAT Special Issue. ESA Bulletin, 106 ESA (2001b) Envisat – GOMOS... M (2007) Envisat platform operations: Providing a platform for science. Proceedings of ENVISAT Symposium...



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...ENVISAT – SCIAMACHY’s Host M. Gottwald1, F.-J. Diekmann2, T. Fehr3 1 ..., 00044 Frascati (RM), Italy Abstract: ENVISAT is Europe’s ambitious Earth Observation... payload. Orbit and attitude of ENVISAT determine the framework of SCIAMACHY.... As a polar, sun-synchronous satellite, ENVISAT provides a stable platform for orbiting...-board data handling capabilities. The ENVISAT ground segment consists of the... SCIAMACHY data follows the general ENVISAT data policy with the exception... copy of such data. Keywords: ENVISAT – Orbit – Flight Operation Segment – Payload... to place SCIAMACHY onto the ENVISAT platform (Fig. 2-1 and 2-2) made it... a ‘derivative’ of the Columbus programme, ENVISAT is composed of the Polar...-orbit mission lifetime of 8 years, ENVISAT generates a large data repository for... the AOI providers. Overall the ENVISAT instruments utilise various remote sensing... GOMOS (ESA 2001b), SCIAMACHY forms ENVISAT’s atmospheric mission. The three atmospheric... analyses. Fig. 2-1: Artist’s impression of ENVISAT in orbit. SCIAMACHY is located...) Fig. 2-2: ENVISAT in ESTEC’s test facility. (Photo: ESA) 22 ENVISAT Parameters Dimensions... Ariane-5 Launch 1 March 2002 Table 2-1: ENVISAT characteristics. Instrument Lithosphere Hydrosphere ASAR... × MIPAS × SCIAMACHY LRR × × × × × Table 2-2: The ENVISAT payload complement and applicable components... days (501 orbits) Table 2-3: Nominal ENVISAT orbit. 23 Fig. 2-3: The total...-IMF) 2.1 ENVISAT Attitude and Orbit Attitude and orbit of the ENVISAT platform... platform is threeaxis stabilised with ENVISAT’s local relative orbital reference coordinate.... 2007). The attitude mode of ENVISAT for nominal operations that offers... amplitude of 3.92° occurs when ENVISAT passes the equator at ascending... precursors, ERS-1 and ERS-2. Thus, ENVISAT was placed in a polar, sun... coordinate system specified in the ENVISAT mission. Platform and instruments use...-satellite track. (Courtesy: DLR-IMF) ENVISAT operations have to ensure that... remain unchanged. 2.2 ENVISAT On-board Resources The total ENVISAT payload shares the... can be achieved. Only when ENVISAT is close to sunrise during.... Fig. 2-5: Schematic view of the ENVISAT on-board data handling. SCIAMACHY...-band. (Courtesy: DLR-IMF) 26 ENVISAT measurement data can be transmitted... the ENVISAT/SCIAMACHY mission planning process by applying strict planning rules. 2.3 ENVISAT... the Ka-band link connects ENVISAT via the Artemis data relay... location of the orbital track. ENVISAT and its instruments are controlled... the PDS. FOS comprises the ENVISAT Flight Operation Control Centre (FOCC... is the responsible entity for ENVISAT measurement data. It is a Europe... Fig. 2-6: The Europe-wide distributed ENVISAT ground segment (FOS: blue, PDS.... 2-7: The ESA centres hosting major ENVISAT ground segment facilities with ESOC... Table 2-4: ENVISAT ESA ground segment facilities. 2.4 ENVISAT Data Products The ENVISAT ground segment... product level supported by the ENVISAT PDS. It represents the final... processed under the responsibility of ENVISAT data users. Their generation is... serving the atmospheric mission on ENVISAT is the D-PAC, located at... access are defined in the ENVISAT data policy. Data utilisation is... applications in support of the ENVISAT mission objectives including long-term... of the atmospheric sensors on ENVISAT, access to SCIAMACHY, MIPAS and... responsibilities both for ESA as ENVISAT mission provider and DLR/NIVR... national agencies. General help on ENVISAT can be obtained via ESA... ENVISAT and its instruments. This request is supported by ESA’s dedicated ENVISAT website (http://envisat.esa.int/). Specific websites... Matatoros, M.A., Ventimiglia, L. and Suen, D. 2006. ENVISAT Attitude and Orbit Control In.... 1998. ENVISAT-1 Mission & System Summary. ESA Brochure, ESA. ESA. 2000. Envisat – MIPAS.... ESA. 2001a. ENVISAT Special Issue. ESA Bulletin, 106. ESA. 2001b. Envisat – GOMOS..., M. 2007. Envisat Platform Operations: Providing a Platform for Science. Proc. ENVISAT Symposium 2007...