Спутник навигационных систем. C/NOFS. [Редактировать]

МКА создан в рамках совместного проекта директората космических аппаратов Исследовательской лаборатории ВВС США AFRL (Air Force Research Laboratory) и Программы космических испытаний STP (Space Test Program). Данный аппарат является военно-исследовательским (создание системы оперативного прогноза нарушений в работе космических связных и навигационных систем вследствие возмущений в ионосфере).
Система управления и обработки данных построена на процессоре RAD6000. Научная аппаратура подключена через дублирован-ную шину данных стандарта 1553В. Для хранения информации вне зон связи используется твердотельное запоминающее устройство емкостью 4 Гбит
Система электропитания включает смонтированные на корпусе МКА солнечные батареи с высокоэффективными фотоэлементами на арсениде галлия мощностью в начале полета 329 Вт, никель-водородную аккумуляторную батарею емкостью 16 А ч, блок управления питанием и кабельную сеть. Потребляемая мощность – 197 Вт на служебные системы и 70 Вт на полезную нагрузку
Трехосная система ориентации и стабилизации. Датчики системы ориентации и стабилизации – трехкомпонентный магнитометр, два инерциальных измерительных блока и два звездных датчика для предотвращения засветки аппаратуры Солнцем. Исполнительные органы – два маховика и магнитные устройства разгрузки. Точность построения ориентации МКА – 1,3°, измерения текущей ориентации – 2,4'
Терморегулирование обеспечивается шестью тепловыми трубами, ведущими к радиатору на надирной части МКА, и нагревателями
Комплекс научной аппаратуры состоит из шести приборов для измерений плазмы и по-лей, нейтральных составляющих атмосферы, суммарной электронной концентрации и собственно сцинтилляций сигналов в ионосфере и включает:

  • пленарный зонд Лэнгмюра PLP (Planar Langmuir Probe) для определения плотности плазмы и ее флуктуации, созданный в Директорате космических аппаратов AFRL;
  • измеритель вектора электрического поля VEFI (Vector Electric Field Instrument) для определения постоянных и переменных компонентов электрического поля и вектора магнитного поля, поставленный Центром космических полетов имени Годдарда NASA;
  • измеритель скорости ионов IVM (Ion Velocity Meter) в пределах до 1000 м/с, постоянных электрических полей и ионной температуры;
  • измеритель скорости нейтральных частиц NWM (Neutral Wind Meter) в пределах до 500 м/с в зональном, меридиональном и вертикальном направлениях и их состава;
  • приемник CORISS (C/NOFS Occupation Receiver for Ionospheric Sensing and Specifica-tion) для измерения навигационных сигналов системы GPS в режиме просвечивания атмосферы и определения вертикального профиля электронной плотности, подготовленный специалистами компании Aerospace Corp.;
  • радиомаяк CERTO (Coherent Electromagnetic Radio Tomography) для томографии ионосферы и определения параметров сцинтилляций на нескольких частотах по показаниям наземных станций, разработанный учеными Военно-морской исследовательской лаборатории США (NRL).

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
1Communication/Navigation Outage Forecast SystemНайтиНайти
2CNOFSНайтиНайти

Дополнительная классификация

#Наименования
1Страна оператор(владелец) - США
2Тип оператора(владельца) - военные
3Тип орбиты - НОО
4Страна производитель - США

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг395
2Мощность, Вт329

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2008-017A

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Стоимость , млн. долл.135

Информация об удачном запуске

#ХарактеристикаЗначение
1Космодром Кваджелейн
2Дата пуска2008-04-16 at 08:00:00 UTC
3Полезная нагрузка 1xC/NOFS
4Ракета-носитель 1xПегас XL

Найдено 242 документов по запросу «C/NOFS». [Перейти к поиску]


Дата загрузки: 2017-05-20
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0.63/5
... ExB drifts from radar and C/NOFS observations in the Indian and... of 150 km echo and C/NOFS ExB drifts over India and... some longitudinal difference • Radar and C/NOFS observations differ remarkably from model... ExB drifts from radar and C/NOFS observations in the Indian and... ExB drifts from radar and C/NOFS observations in the Indian and... Investigation (CINDI) observations onboard the C/NOFS satellite and the Scherliess-Fejer... that the instruments onboard the C/NOFS measure vertical/meridional ExB drift... meridional ExB drifts observed by C/NOFS at similar low latitudes [Stoneback... Dynamics Investigation (CINDI) onboard the C/NOFS. The objectives are twofolds: (1) evaluate...: Space Physics 10.1002/2013JA019732 C/NOFS observations used here were obtained... velocity. These instruments fly onboard the C/NOFS satellite in a 13° inclination orbit... the electrojet belt. IVM onboard C/NOFS can be found elsewhere [Stoneback... from both the radars and C/NOFS is only 6, while the number... radar and EAR is 12. C/NOFS observations from a longitude belt of... (b) 24 December 2009. (top) The C/NOFS passes and the radar locations... the CINDI observations correspond to C/NOFS passes close to 20°S magnetic...° have been used for comparison. C/NOFS observations corresponding to a magnetic latitude... to magnetic latitudes of ±10°. C/NOFS passes during 9–16 LT based..., while the total number of C/NOFS passes on the 8 days of... on 13 C/NOFS passes for Gadanki and 41 C/NOFS passes for Kototabang... corresponding to some of the C/NOFS passes. Figure 4. Comparison of radar... the CINDI observations correspond to C/NOFS passes close to 5°S and 10..., although the altitude of the C/NOFS varied, they were close to... to December observations when the C/NOFS was close to the magnetic... those of CINDI when the C/NOFS was close to the magnetic... is not so when the C/NOFS was ~10° farther south of.... Figure 4 shows two cases when C/NOFS was close to 5°S and 10... noted from Figure 4b that C/NOFS observations corresponding to 5°S agree better... Figures 2–4 clearly suggest that for C/NOFS passes close to the magnetic... 9–16 LT, the number of C/NOFS passes per day in the... observed in 120 days of C/NOFS observations was 174, which have... radar and model drifts and C/NOFS and model drifts are shown... both the longitudes from a given C/NOFS pass can not be compared... compared. After accounting for the C/NOFS orbiting period, transit time and... those of CINDI when the C/NOFS is close to the magnetic... ExB drifts observed by the C/NOFS and found a very good agreement... CINDI and radar observations when C/NOFS was far away from the... quite likely that when the C/NOFS orbit is away from the... to identical or near identical C/NOFS passes, the corresponding latitudes are... from CINDI on board the C/NOFS and found a good agreement between... between RISH and LAPAN. The C/NOFS mission is supported by the..., F. S., G. Crowley, S. M. I. Azeem, and R. A. Heelis (2011), C/NOFS observations of the equatorial ionosphere... and photoemission correction for the C/NOFS satellite, J. Geophys. Res., 117, A08323... ionospheric irregularities during solar minimum: 2. C/NOFS observations and comparison with the...



Дата загрузки: 2017-03-28
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0.07/5
... with the AFRL SCINDA Team • C/NOFS – GPS Occultation – Beacon Measurements • Phase... Communication/Navigation Outage Forecasting System C/NOFS First-ever system for continuous... of communication and navigation outages C/NOFS 37 Communication/Navigation Outage Forecasting... capability with C/NOFS Equatorial Irregularities Plasma Density C/NOFS Satellite C/NOFS Beacon Signal Scintillation Receiver Ground 39 2008 C/NOFS Campaign... perigee, C/NOFS In-Situ observations can “miss” active regions C/NOFS Perigee 400 km altitude 40 C/NOFS CERTO & ALTAIR • Beacon data from C/NOFS... regions in the ionosphere 41 C/NOFS GPS Occultation • GPS Occultation Data...



Дата загрузки: 2017-01-30
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0/5
... Research Laboratory Five years of C/NOFS Observations: Equatorial Space Weather Space... • C/NOFS mission, satellite sensors • C/NOFS results • ~100 peer reviewed articles published about C/NOFS... Communication/Navigation Outage Forecasting System (C/NOFS) Mission Mission Components • Satellite, w/ 6 sensors...) (NASA) – Ion Velocity, composition, Ti C/NOFS from Ion Velocity Meter (IVM... (PBMod) & several others • Data Center C/NOFS Satellite Orbit: I = 13° 400 to... (SCINDA) Unclassified, Unlimited Distribution 5 Introduction C/NOFS Program Goals • Develop technology for... 6 Introduction Solar Activity During C/NOFS F10.7 during C/NOFS lifetime • Based on F10... C/NOFS] Unclassified, Unlimited Distribution 8 C/NOFS Observations of Dawn Depletion • Unexpected deep C/NOFS PLP... density at ~05:00 LT C/NOFS altitude Dawn depletion • Just before... of 1s density Magnetic equator C/NOFS trajectory de La Beaujardière... Physics Based Model (PBMod) using C/NOFS E-field Bottom Left: Same but...) and climo (black). Star indicates C/NOFS position and its measured density.... [From Su et al., 2009] C/NOFS detected deep Ni minima close... can be inferred from these C/NOFS measurements (August 18, 2008) [From... Distribution 15 Wind Measurements from C/NOFS Neutral wind measurements, October Storm... 100 m/s during storm main phase • C/NOFS values match FPI measurements (not... to estimate scintillation index from C/NOFS data Developed by R. Stoneback (UTD... Verde (blue curve) • Estimate from C/NOFS (black curve) • Nov 6, 2009 Unclassified, Unlimited Distribution 18 Future • C/NOFS sensors still working perfectly • Severe..., Unlimited Distribution 19 Discussion/Conclusion • C/NOFS satellite 13° inclination, elliptical orbit... to dawn; are well modeled • C/NOFS low inclination allows observations close... estimated from 2 different methods • ~100 C/NOFS publications written (list available) • GRL... of GRL Special Issue on C/NOFS (2009) Unclassified, Unlimited Distribution 21... Unclassified, Unlimited Distribution 22 The C-NOFS Satellite GPS Receiver Planar Langmuir Probe (PLP) C/NOFS Occultation Receiver for Ionospheric Sensing...



Дата загрузки: 2017-01-30
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0/5
...NOFS Press Conference AGU 15 December ... Flight Center Dr. Donald Hunton C/NOFS Technical Manager Air Force Research Laboratory Space Vehicles Directorate C/NOFS QuickTime™ and a MPEG-4 Video decompressor... Outage Forecasting System [NASA animation] C/NOFS Communication • Communication • Navigation • Outage • Forecasting... to see this picture. • System C/NOFS Navigation • Communication • Navigation • Outage • Forecasting... - Distortion - Fade - Dropouts, signal loss 7 C/NOFS Forecasting • Communication Probability of scintillation... Time of Year Solar Cycle C/NOFS Forecasting But … “Will scintillation impact my operations tonight?” C/NOFS seeks to make the leap... Weather vs “Space Weather” The C/NOFS approach is similar to terrestrial... time ever we have the C/NOFS satellite, ground-based sensors, and... focused on the ionosphere. With C/NOFS, scientists have the capability to... the first “space weather” forecasts. C/NOFS is more than just a satellite... Research Laboratory Space Vehicles Directorate C/NOFS C/NOFS Observations of Ionospheric Structures Plasma... 14 Oct 2008 as the C/NOFS satellite flew through the disturbed... Depletion Seen by CHAMP and C/NOFS • Upper atmosphere is still in... bubble evolution quite well C/NOFS Mission Goals C/NOFS is the first mission... Communication / Navigation Outage Forecasting System • C/NOFS – Spacecraft instruments, ground-based sensors... communication and GPS navigation signals. • C/NOFS results unlock some mysteries and... predicted even for solar minimum. • C/NOFS More “space weather” forecasting challenges... The Ionosphere at Solar Minimum C/NOFS has observed the top of... Day and Night Ionosphere C/NOFS Preliminary Results • C/NOFS spacecraft is in a unique... expected even at solar minimum. C/NOFS has provided a fundamental new image... planet and its space environment. C/NOFS Dr. Rob Pfaff CINDI Project... Flight Center Conceptual Image Lab C/NOFS Satellite Instruments • • • Equatorial orbit (~13...: Electric and magnetic field suite • • • C/NOFS Ion density, electron temperature CORISS...



Дата загрузки: 2016-11-01
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0.18/5
... Target of Investigation FSII and C/NOFS simultaneously intersect a magnetic flux tube... the field line FSII and C/NOFS non-simultaneously intersect a magnetic flux... Communications/Navigation Outage Forecasting System (C/NOFS), a satellite with a sophisticated set of... January 2003 and that of C/NOFS the following November, there is..., let’s say that FS2 and C/NOFS are within 50 km of..., we repeat the process for C/NOFS and Page 6 of 9 SSC02-IX... and compare conjunction opportunities with C/NOFS and DMSP. Not all Keplerian... of opportunities for conjunctions with C/NOFS. This is a 400 km by.... Although C/NOFS is eccentric, similar results were found for C/NOFS and DMSP... tube conjunction times for FalconSAT-2, C/NOFS, and DMSP, we have demonstrated that the FalconSAT-2 and C/NOFS orbits are most likely to... the computations for DMSP and C/NOFS did not reveal flux tube.... Instrum., submitted, 2002 Figure 10. C/NOFS (+) and FS-2 (triangle) for two...



Дата загрузки: 2017-01-30
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0/5
.../Navigation Outage Forecasting System (C/NOFS) satellite. Our C/NOFS comparisons confirm the earlier.... Keywords: IRI Solar minimum Ionosonde C/NOFS 1. Introduction The recent solar cycle... cycle 23/24 minimum period. C/NOFS-CINDI measurements have shown that... to the work with C/ ¨ and NOFS-CIDNI data an important study... with insitu measurements from the C/ NOFS-PLP instrument. Author's personal copy... Communication/Navigation Outage Forecast system (C/ NOFS) satellite is an Air Force... Beaujardie re et al., 2004). C/ NOFS was launched on April 16... precess through all local times. C/NOFS carried 6 instruments into space: (1) the... the present study. 4. Comparison with C/NOFS PLP data Because we find... Communication/Navigation Outage Forecast system (C/NOFS) satellite. The data shown in... semiannual variation seen in the C/NOFS data with peaks during the... and standard deviations computed from C/NOFS PLP data ( ) and with the... and standard deviations computed from C/NOFS PLP data ( ) and with the... high-inclination (polar) orbits, whereas C/NOFS is in a low-inclination orbit... Anomaly (EIA) region and since C/NOFS only samples this region it... average altitude difference from the C/NOFS satellite down to the IRIpredicted... Klenzing et al. (2011) with C/NOFS data. Our study finds that... low latitudes. Our comparisons with C/NOFS PLP measurements con¨ firm the... measured by CINDI from the C/NOFS spacecraft during solar minimum. Journal... Beaujardie re, O., et al., 2004. C/NOFS: a mission to forecast scintillations. Journal...



Дата загрузки: 2017-03-09
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0.05/5
.../SOHO 3 GOES 4 GPS 5 DSP 6 NPOESS 7 C/NOFS 8 SOON 9. RSTN 10 DISS 11TEC... FO 3 GOES 4 GPS 5 DSP 6 NPOESS 7 C/NOFS 8 ISOON/GONG 9 RSTN II 10... • GOES, GPS, and other satellites • C/NOFS and COSMIC follow-on operations.../SOHO 3 GOES 4 GPS 5 DSP 6 NPOESS 7 C/NOFS 8 SOON 9. RSTN 10 DISS 11TEC.../SOHO 3 GOES 4 GPS 5 DSP 6 NPOESS 7 C/NOFS 8 SOON/GONG 9 RSTN 10 NEXION.../SOHO 3 GOES 4 GPS 5 DSP 6 NPOESS 7 C/NOFS 8 ISOON/GONG 9 RSTN II 10... FO 3 GOES 4 GPS 5 DSP 6 NPOESS 7 C/NOFS 8 SOON/GONG 9 RSTN 10 NEXION... FO 3 GOES 4 GPS 5 DSP 6 NPOESS 7 C/NOFS 8 ISOON/GONG 9 RSTN II 10...



Дата загрузки: 2016-12-20
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0.34/5
... Communications/Navigation Outage Forecasting System (C/NOFS) satellite during this period are... ionospheres are compared to the C/NOFS average topside ion density and... when compared to both the C/NOFS density data and the F3...) were frequently observed by the C/NOFS satellite in 2009 and were... the extreme solar minimum. The C/NOFS satellite is part of a space... topside density climatology derived from C/NOFS near the dip equator in... results. As the perigee of C/NOFS is above the height of... Electric Field Instrument (VEFI) onFig. C/NOFS 2. Theduring median vertical drifts as... the early years of the C/NOFS program cause the constant offset... the orbital limits of the C/NOFS satellite. Note that there is... of the test area that C/NOFS cannot reach; however, this is... the same criteria as the C/NOFS data. The peak density (NmF2... time (Klenzing et al., 2011b). C/NOFS is equipped with multiple instrument... to the VEFI E × B climatology.) C/NOFS data The C/NOFS satellite was launched in... test region as the changes. C/NOFS data (Fig. 3). www.ann-geophys... stronger, as manifested in the C/NOFS plasma density data as a function... Pacific sector from both the C/NOFS satellite and the F3/C constellation... when compared to both the C/NOFS density data and the F3... Communication/Navigation Outage Forecast System (C/NOFS) mission, conceived and developed by... Beaujardière, O. and the C/NOFS Definition Team: C/NOFS: a mission to forecast scintillations...



Дата загрузки: 2017-01-30
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0.13/5
... Communications/Navigation Outage Forecast System (C/NOFS) satellite during conjunction intervals. Results... ion densities measured by the C/NOFS than were those predicted by... of sensors on the COSMIC, C/NOFS and DMSP satellites to infer.... Data acquired during eight COSMIC-C/NOFS-DMSP conjunctions on 24 – 25... do data from RPAs on C/NOFs and DMSP bring? • Our objective...: SSIES on DMSP & CINDI on C/NOFS RPA Measurements: RPA Schematic i+ e- i+ Vsat... equilibrium. COSMIC EDPs: Study 2 COSMIC – C/NOFS – DMSP Conjunctions C 24 and 25... & recovery phases COSMIC EDP: Study 2 C/NOFS and Model Comparisons Midnight Dawn... EDP Study Statistical Comparisons with C/NOFS 7 10 N = 0.612 * N 10 5 10 4 e 10... ] 10 1000 1000 -3 C/NOFS: N [cm ] i 10 4 10 5 6 10 -3 C/NOFS: N [cm ] i 10 7 1000 1000 10 4 10 5 6 10 10 7 -3 C/NOFS: N [cm ] i Electron densities from EDPs.../blue dots show Ni from C/NOFS / DMSP 14 Bottom: -3 Ln Ne... and Te from DMSP and C/NOFS to estimate topside thermal distributions...



Дата загрузки: 2017-04-09
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0.2/5
... Communications/Navigation Outage Forecast System (C/NOFS) Advanced Concept Technology Demonstration. Assembled...-handling systems to construct the C/NOFS data center. Provided navigation reliability... the ground-based component of C/NOFS. Established high latitude sites to... Communication/Navigation Outage Forecasting System (C/NOFS) Advanced Concept Technology Demonstration. Integrate... and navigation outage forecasts with C/NOFS satellite and ground-based data...