Прибор. SCA (Scatterometer). [Редактировать]

C-диапазон (5.3 ГГц), съемка по сторонам от надир.  3 антенны с каждой стороны

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг.600
2Мощность, Вт540
3РазрешениеНоминально: 25 км с кадрами на 12.5 км интервалах. Высокодетальный режим: 15-20 км с кадрами по 6.25 км интервалами.
4Тип прибораРадарный скэйтометер
5Целевое назначениеОценка ветра над морскими поверхностями. Также позволяет измерить влажность.
6Тип сканераДва 550-км ряда разделенные 700-km гэпом вдоль трэка. 3 просмотра на каждую точку (45, 90 и 135° по азимуту)
7Скорость работы, Мбит в секунду5

Найдено 107 документов по запросу «SCA (Scatterometer)». [Перейти к поиску]


Дата загрузки: 2016-12-12
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0.23/5
... 10:00 The European C-band Scatterometer Programme, New Challenges and Opportunities...-SG Scatterometer Instrument Development - Status and Plans 10:20 10:40 SCA... The New C-Band EPS-SG Scatterometer 11:00 11:30 Coffee... 12:30 EPS/Metop-SG Scatterometer Mission Science Plan 12:30... Cone metrics: a new tool for scatterometer intercalibration 14:20 14:40... Singularity analysis: A powerful technique for scatterometer wind data processing 15:00... in a New Procedure for Gridding Scatterometer Data 16:10 16:30... wind vectors derived from of scatterometer measurements. 16:50 17:10... View Of The EPS-SG SCA Scatterometer 10:00 10:20 The...:40 Towards improved understanding of scatterometer surface winds of the coastal...:50 Ionosphere effects on the SCA HV data 16:50 17... climate 09:00 09:20 Scatterometer High Winds Workshop Summary 09... term climatological data records from scatterometer winds 10:00 10:20...:40 On the use of Scatterometer winds at ECMWF 10:40... 11:30 The use of scatterometer winds in NWP models at... of Scatterometer Winds at MET Norway 11:50 12:10 Scatterometer Winds... 12:30 Assimilation of RapidScat Scatterometer Winds in the MSC Global... A wave scatterometer: SWIM on CFOSAT 14:20 14:40 Scatterometer with rotating... and Scatterometer Surface Wind Speed Improving the use of Scatterometer Measurements Scatterometer Wind... ice Sea ice monitoring by scatterometer instruments Downscaling parameter estimation meets...



Дата загрузки: 2016-12-12
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0.25/5
... 10:00 The European C-band Scatterometer Programme, New Challenges and Opportunities...-SG Scatterometer Instrument Development Status and Plans 10:20 10:40 SCA... The New C-Band EPS-SG Scatterometer 11:00 11:30 Coffee... 12:30 EPS/Metop-SG Scatterometer Mission Science Plan 12:30... Cone metrics: a new tool for scatterometer intercalibration 14:20 14:40... Singularity analysis: A powerful technique for scatterometer wind data processing 15:00... in a New Procedure for Gridding Scatterometer Data 16:10 16:30... wind vectors derived from of scatterometer measurements. 16:50 17:10... View Of The EPS-SG SCA Scatterometer 10:00 10:20 The...:50 Sea ice monitoring by scatterometer instruments at Met Norway 12...:00 Ionosphere effects on the SCA HV data 15:00 15... climate 09:00 09:20 Scatterometer High Winds Workshop Summary 09... term climatological data records from scatterometer winds 10:00 10:20...:40 On the use of Scatterometer winds at ECMWF 10:40... 11:30 The use of scatterometer winds in NWP models at... of Scatterometer Winds at MET Norway 11:50 12:10 Scatterometer Winds... 12:30 Assimilation of RapidScat Scatterometer Winds in the MSC Global... A wave scatterometer: SWIM on CFOSAT 14:20 14:40 Scatterometer with rotating... 14:40 15:00 NSOAS scatterometer missions 15:00 15:20... and Scatterometer Surface Wind Speed Improving the use of Scatterometer Measurements Scatterometer Wind... Analysis Coastal Upwelling Revealed by Scatterometer Wind and Satellite Sea Surface...



Дата загрузки: 2016-12-12
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0.18/5
... 10:00 The European C-band Scatterometer Programme, New Challenges and Opportunities...-SG Scatterometer Instrument Development Status and Plans 10:20 10:40 SCA... The New C-Band EPS-SG Scatterometer 11:00 11:30 Coffee... 12:30 EPS/Metop-SG Scatterometer Mission Science Plan 12:30... Cone metrics: a new tool for scatterometer intercalibration 14:20 14:40... Singularity analysis: A powerful technique for scatterometer wind data processing 15:00... in a New Procedure for Gridding Scatterometer Data 16:10 16:30... wind vectors derived from of scatterometer measurements. 16:50 17:10... View Of The EPS-SG SCA Scatterometer 10:00 10:20 The...:50 Sea ice monitoring by scatterometer instruments at Met Norway 12...:00 Ionosphere effects on the SCA HV data 15:00 15... climate 09:00 09:20 Scatterometer High Winds Workshop Summary 09... term climatological data records from scatterometer winds 10:00 10:20...:40 On the use of Scatterometer winds at ECMWF 10:40... 11:30 The use of scatterometer winds in NWP models at... of Scatterometer Winds at MET Norway 11:50 12:10 Scatterometer Winds... 12:30 Assimilation of RapidScat Scatterometer Winds in the MSC Global... A wave scatterometer: SWIM on CFOSAT 14:20 14:40 NSOAS scatterometer missions 14:40 15:00 Scatterometer with rotating... and Scatterometer Surface Wind Speed Improving the use of Scatterometer Measurements Scatterometer Wind... Analysis Coastal Upwelling Revealed by Scatterometer Wind and Satellite Sea Surface...



Дата загрузки: 2016-12-29
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0.15/5
... Weekly Gridded Aquarius L-Band Radiometer/ Scatterometer Observations and Salinity Retrievals Over.... "Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over.... Weekly Gridded Aquarius L-Band Radiometer/Scatterometer Observations and Salinity Retrievals Over.... Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over... track) for the radiometers and scatterometer, respectively. The data is gridded... the first space-borne L-band scatterometer. Despite the fact that these... describe the Aquarius radiometers and scatterometer in Sects. 2.1 and 2.2, respectively. In... angle). Aquarius also has one scatterometer providing a NRCS at 1.26 GHz... et al., 2012a). The one scatterometer uses the same three feed...., 2011). 2.2 Aquarius scatterometer Aquarius’ active instrument consists of one scatterometer observing NRCS at 1.26 GHz. The Aquarius scatterometer does... Union, 2012). Moreover, operating the scatterometer at a slightly lower frequency protects... radiometers from direct contaminations. Aquarius’ scatterometer uses the same three feed... back, despite the lower frequency. Scatterometer’s sensitivity varies with incidence angle... practical purposes, the radiometer and scatterometer measurements are considered coincident. The..., during which the radiometers and scatterometer measure alternatively over 10 ms... characteristics of the Aquarius L-band scatterometer. Beam 3 dB two-way footprint... (km × km) NE σ 0 (dB) Scatterometer sensitivity (dB) Scatterometer stability for 7 days (dB... of RFI in the Aquarius scatterometer observation are based on two... galaxy and Sun) using the scatterometer observations and a simulated wind speed...). This product also contains the scatterometer ice fraction (ICEF_SCA and ICEF_SCA_STD... of footprint observations; RAD – radiometer; SCAscatterometer; SSS – sea surface salinity; ICEF..., L. S.: Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over..., A., Chaubell, M. J., Tang, W., and Neumann, G.: Aquarius Scatterometer Algorithm Theoretical Basis Document, Version...



Дата загрузки: 2017-09-24
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0.27/5
... to operational oceanography: • the Advanced Scatterometer (ASCAT) is a multi-beam C-band... plus new ice parameters. The SCA scatterometer (on board Metop-SG-B) will...



Дата загрузки: 2017-11-24
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0.28/5
... Ozone Monitoring Experiment 2 ASCAT: Advanced Scatterometer GRAS: Global Navigation Satellite System...-5: UV-VIS-NIR-SWIR Sounder SCA: Scatterometer RO: Radio Occultation MWI: Microwave...



Дата загрузки: 2017-04-24
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0.1/5
... Remote Sensing Satellite (ERS) C-band scatterometer with resolution of ~50 km... as well as the Aquarius scatterometer, although the temporal coverage is...-channel algorithm at H polarization (baseline) (SCA-H) • Single-channel algorithm at V polarization (SCA-V) • Dual-channel algorithm (DCA) • Microwave ... In the single-channel algorithm (SCA) (Jackson 1993), horizontally polarized (H-pol... of H-pol TB with the SCA is the current SMAP baseline.... For SMAP implementation of the SCA, values of b and ω will be... al. 2005) revealed that the SCA could produce biased retrievals based...) is an extension of the SCA described in the previous section... square sense. Similar to the SCA, estimates of model parameters (e.g., surface... effective VWC correction with the SCA algorithm for existing vegetation (1X... accuracy statistics. Results for the SCA-V pol are similar. However, the... Averaged Across All VWC Bins SCA-H SCA-V DCA MPRA 0.0213 0.0227 0.0323.../cm3) 0.07 0.06 DCA MPRA SCA-V SCA-H 0.05 0.04 0.03 0.02 0.01... alternatives. Initial results using the SCA with a SMOS-based simulated SMAP... soil moisture estimated using the SCA algorithm with the SMAP-simulated.... Soil moisture retrieved using the SCA with SMOS-simulated SMAP TB... the statistical performance of the SCA algorithm over these watersheds. Despite... summary of the SMOS/SMAP/SCA retrieval algorithm results over USDA... using the single-channel algorithm (SCA) for SMOS ascending orbits for... using the tau-omega (τ-ω) model (SCA). Figure 45(b) and Figure 45... compared with observations of the scatterometer onboard the Aquarius/SAC-D satellite... mv change using C-band ERS scatterometer data. The index (Ms) is... were applied to low-speckle scatterometer data with the spatial resolution... baseline algorithm was tested with • • Scatterometer data collected over four bare... algorithm for ERS and METOP scatterometer observations,” IEEE Trans. Geosci. Rem... Western Africa using the ERS scatterometer,” IEEE Trans. Geosci. Rem. Sens... estimating soil moisture from ERS scatterometer and soil data,” Remote Sens..., initially involving truck-mounted radar scatterometer and radiometer studies over bare... satellite-based SAR, radiometer, and scatterometer studies at regional, continental, and... using both NSCAT and SeaWinds scatterometer data for a variety of regions..., “Using the space-borne NASA Scatterometer (NSCAT) to determine the frozen... S. W. Running, “Application of the NASA scatterometer (NSCAT) for determining the daily...-Arctic scale using the SeaWinds scatterometer,” J. Hydrol., vol. 312, pp. 294... Cal/Val. 5) ASCAT EUMETSAT Advanced Scatterometer (ASCAT) provides soil moisture index..., “Weekly-gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over... of soybean growth using L, C, X-band scatterometer data,” International Journal of Remote... and vegetation indices using Aquarius scatterometer observations,” IEEE Trans. Geosci. Rem... Noise Calibration Standard ASCAT Advanced Scatterometer ASF Alaska Satellite Facility CNS... Excess PLIS Polarimetric L-Band Imaging Scatterometer SAC-D Satélite de Aplicaciones... S/C Spacecraft PRI Pulse Repetition Interval SCA Single-Channel Algorithm PTL Product Team Lead PWR Power SCA-H (V) Single-Channel Algorithm at H Polarization... Assessment QC Quality QuikSCAT Quick Scatterometer RATS (Heritage Noise Source) RBA...



Дата загрузки: 2017-11-24
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0.06/5
... regional scale snow-covered area (SCA) monitoring for several years. Different... utilizing a single reference image for SCA estimation has been shown to... Helsinki University of Technology (TKK) SCA method that is specifically developed for boreal forest regions. The SCA evaluations are carried out using... seasons of 2004-2007. The SCA estimation accuracies for the radar... determined using optical satellite based SCA data as reference. The results show that SCA estimation using a single reference image... TKK-developed, boreal forest specific SCA method. The best accuracy obtained... of 0.123 for the TKK SCA method. [112] Stable Coherent Area... of this Stable Coherent Area (SCA). As classic coherence estimators are... made by the ERS radar scatterometer. The sea surface currents of... principle and performance parameters of scatterometer were introduced, the detailed experimental... successfully. The measurement process of scatterometer was briefly introduced in this... product using visible, microwave and scatterometer satellite data. For this blended...-E) passive microwave data and QuikSCAT scatterometer data. A snow algorithm referred to..., (2) TKK fractional snow-covered area (SCA) method with in situ observations... forest stem volume. Comparison of SCA estimation results with available ground... examination of its validity with scatterometer measurements of green-onion fields... between the computation outputs and scatterometer measurements for the backscattering coefficients...) observations using airborne imaging polarimetric scatterometer (POLSCAT). Snow is a densely packed... the ability of the ERS scatterometer to detect vegetation properties. The... slope parameter from the ERS scatterometer (ERS-SCAT) and the Normalized...] The development of a C-band Advanced Scatterometer (ASCAT) geophysical model function at... as expected. [289] Uncertainty in scatterometer derived vorticity. A more versatile and... it with two field ground scatterometer experimental data. The results indicate... surface rain and wind on scatterometer observations of surface roughness. The... being studied using the QuikSCAT scatterometer and simultaneous NEXRAD three-dimensional... of the AVE and the Scatterometer Image Reconstruction (SIR) algorithms to... product using visible, microwave and scatterometer satellite data. / Foster J., Hall D., Eylander... examination of its validity with scatterometer measurements of green-onion fields... the ability of the ERS scatterometer to detect vegetation properties. / Doubkova... Z. The development of a C-band Advanced Scatterometer (ASCAT) geophysical model function at... реферат 290. Bourassa M.A. Uncertainty in scatterometer derived vorticity. / Bourassa M.A. // Geoscience and... surface rain and wind on scatterometer observations of surface roughness. / Weissman...



Дата загрузки: 2017-04-23
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0.17/5
... so as to fit with the scatterometer observations of previous and current... Environment 191 (2017) 179–196 scatterometer measurements (ERS, QuikSCAT), which contain... resulting from the extrapolation of scatterometer winds in near-coastal regions... have relied on satellite-borne scatterometer data (Figueroa and Moffat, 2000... the coast, thus surpassing the scatterometer capabilities subject to retrieval errors... in Fig. 2 and Table 1. 2.2. Satellite scatterometer data Wind scatterometry is a widely... the scatterometer Sea Winds aboard the QuikSCAT satellite and the Advanced SCATterometer.... We used two types of scatterometer products: 1. Level-2: The L2-swath... Fillon, 2012). The accuracy of scatterometer products was determined in several...) and L3-gridded (28-km) scatterometer products considered here as the... comparison between the altimeter and scatterometer data was carried out over... difference between paired altimeter and scatterometer greater than three standard deviations... by mission with the L2swath scatterometer data. A collocation criteria was chosen... comparison from both ascending/descending scatterometer passes in the minimum space... between the altimeters and both scatterometer products including conventional, linear moments... L2-swath scatterometer. The frequency distribution of the altimeter/scatterometer by wind... in statistics between altimeter and scatterometer decreases unsurprisingly as a function of... mission using swath and gridded scatterometer as ground-truth reference. Mean...). Validation Dates Altimeter ENVISAT vs. scatterometer (swath) 2003-01-01–2009... vs. scatterometer (gridded) Altimeter SARAL vs. scatterometer (swath) Altimeter SARAL vs. scatterometer (gridded) Altimeter Jason-1 vs. scatterometer (swath) Altimeter Jason-1 vs. scatterometer (gridded) Altimeter Jason-2 vs. scatterometer (swath) Altimeter Jason-2 vs. scatterometer (gridded) Range Length Outliers ALT SCA 62... to increase the agreement between scatterometer and altimeter. Similar procedures were... the best linear fit between the scatterometer (L2swath) data and the altimeter... relaxed temporal proximity between altimeter-scatterometer (L2-swath) for the ENVISAT... calibrated altimeter winds against both scatterometer products, repeating the same statistical... Distribution Functions (PDF) of the scatterometer and the altimeter data (not... data in comparison with the scatterometer data. Such values are mostly... ≥ 10 Altimeter ENVISAT All vs. scatterometer b4 (gridded) 4–10 ≥ 10 c Altimeter...) ≥ 10 Altimeter SARAL All vs. scatterometer b4 (gridded) 4–10 ≥ 10 c Altimeter...) ≥ 10 Altimeter Jason-1 All vs. scatterometer b4 (gridded) 4–10 ≥ 10 Altimeter.... scatterometer b4 (gridded) 4–10 ≥ 10 Altimeter ENVISAT vs. scatterometer (swath) Outliers ALT SCA... by altimeter mission using swath scatterometer as ground-truth reference within... coast Dates Altimeter ENVISAT vs. scatterometer (swath) 2003-01-01–2009.... scatterometer (swath) Altimeter SARAL vs. scatterometer (swath) Calibrated altimeter SARAL vs. scatterometer (swath) Altimeter Jason-1 vs. scatterometer (swath) Calibrated altimeter Jason-1 vs. scatterometer (swath) Altimeter Jason-2 vs. scatterometer (swath) Calibrated altimeter Jason-2 vs. scatterometer (swath) Range Length Outliers ALT ρ Bias RMSE MAE STD SCA 10... for the altimeter and the scatterometer along the selected tracks for... between the altimeter and the scatterometer (i.e. RMS = 0.33, 0.28, 0.51 and...–196 by these authors, the scatterometer data lead to an underestimation...-1 and Jason-2 (left column) and scatterometer (middle column) calculated over the... and SARAL (left column) and scatterometer (middle column) calculated over the... on the comparison between the scatterometer and altimeter datasets outside the... higher scores with respect to scatterometer than the ENVISAT and SARAL... regression between both altimeter and scatterometer data, with values consistent with... cycle. To evaluate this, the scatterometer and the calibrated altimeter data... with the blind zone in scatterometer coverage for modeling wind-stress... propose to “nudge” altimeter and scatterometer data in order to include..., A., 1999. Comparing Ku-band NSCAT scatterometer and ERS-2 altimeter winds. IEEE... the quality of high-resolution scatterometer winds. J. Geophys. Res. http://dx... from ENVISAT ASAR, Metop ASCAT scatterometer, buoy measurements, and NOGAPS model...



Дата загрузки: 2017-11-24
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0.12/5
Status overview of the European scatterometer activities Julia Figa-Saldaña & Klaus Scipal julia.figa@eumetsat.int klaus.scipal@esa.int International Ocean Vector Winds Science Team Meeting, May 2015 in Portland (OR), USA Outline • MetOp/EPS status • MetOp/EPS-Second Generation status • 2016 scatterometer conference • Other European ocean programme news YEAR... Outlook of European scatterometers 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 EUMETSAT POLAR SYSTEM (EPS) METOP-A METOP-B METOP-C METOP SECOND GENERATION METOP-SG-A1 METOP-SG-B1 METOP-SG-A2 METOP-SG-B2 METOP-SG-A3 METOP-SG-B3 VV VV 315º 45º 90º 270º VV + VH VV + VH 225º 135º VV 660 km VV 525 km 660 km C-band scatterometer SCA has heritage from ASCAT on MetOp (frequency band, geometry) with slightly improved coverage Improved resolution (two times ASCAT’s) Additional information (HV measurement, less on-board processing) • MetOp/EPS Schedule and news Since last year: – MetOp-A EOL strategy defined: maintain MetOp-A/B phasing, improving the combined coverage – Availability of ASCAT-A NRCS FCDR (*) – Special attention to high resolution processing issues (*) – Prototyping of new dissemination system: EUMETCast terrestrial (using the National Research and Education Networks) – Release of ASCAT-A soil moisture CDR (H-SAF) – Release of a QuikSCAT wind CDR (OSI SAF) – ASCAT-A transponder calibration campaign and calibration monitoring (*) • Outlook: – – – – – Release of a long term scatterometer wind CDR, including ASCAT, ERS (OSI SAF) (*) New reprocessing of ASCAT-A/B NRCS to start in 2016 Release of a standalone ASCAT NRCS processor Preparation for launch and commissioning of MetOp-C Operational ground segment H/W upgrade (*) will be covered by contributions to the IOVWST2015 mtg MetOp/EPS SG schedule and news • Since last year: – – – – Confirmation of innovative SCA features SCA instrument industry contract kicked-off (Dec 2014) System Preliminary Design Review was held in March 2015 Version ‘zero’ of algorithm and format specifications available • Outlook: – SCA instrument PDR Sept-Oct 2015 – Invitation To Tender (ITT) for the ground segment (including the SCA Level 1 ground processor) to be released early 2016 – Issuing the SCA science plan, to guide in the instrument development, the processing specification and the cal/val preparation – Looking into feasibility of deriving ocean surface current information from measurement phase – Looking into the benefit of the cross-pol information to improve the vegetation correction in the scatterometer soil moisture retrievals YEAR... 03 Other ocean missions launched this year 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 JASON JASON-2 JASON-3 JASON CONTINUITY OF SERVICE (CS) COPERNICUS SENTINEL-3 Within international partnerships • Jason-3: launch July 22nd – Poseidon-3B altimeter • Sentinel-3: launch October 30th – Sea and Land Surface Temperature Radiometer (SLSTR) – Ocean and Land Colour Instrument (OLCI) – SAR Radar Altimeter (SRAL) 32 33 34 35 36 37 38 39 Sentinel-3 products and applications 3h 48 h 30 d ~1/2 y time NRT products Weather and ocean forecasting, sea state forecasting STC products Operational ocean monitoring and forecasting NTC products Climate monitoring Oceanography Reprocessing Campaign NRT: Near Real time STC: Short Time Critical NTC: Non time Critical NTC products Climatology Data exploitation for science 2016 Scatterometer Conference • 1998: “Emerging Scatterometer Applications: from Research to Operations Workshop” • 2011: “Scatterometer science conference” in Darmstadt, Germany (Special Issue, IEEE TGARS, Vol. 50 No.7, July 2012:’Recent advances in C-ban Scatterometry’) • 2016, February 2-4: “Scatterometer Science Conference 2016 – New challenges and opportunities” in ESTEC, Noordwijk, The Netherlands Themes • Advancements in Scatterometer Systems • Cal/val and performance monitoring methods and results • Exploitation of the data for applications, over the ocean, land and sea ice • Establishment of Scatterometer‐based CDRs: standardisation of contents and validation standards Overview of Europe Scatterometer missions • C-band fan-beam scatterometers flying on board MetOp/EPS (3 instruments) and planned for their Second Generation satellites (nominally 3 instruments, to be formally confirmed by EUMETSAT in 2014) • All in sun-synchronous polar orbit, altitude 832 km, mean local solar time 09:30 (descending node), repeat cycle 29 days. • ASCAT-A (2006-…) and ASCAT–B (2012-…) on MetOp/EPS in dual operations. ASCAT-C planned for launch in October 2018 • MetOp/EPS-SG consists of two series of satellites: “SAT-A” and “SAT-B” and target 21 years of operations. The scatterometer instruments SCA are in SAT-B, the first one planned for launch in 2023 SCA specifications • Scatterometer specifications: ASCAT versus SCA SCA