Спутник ДЗЗ. Quakesat. [Редактировать]

На QuakeSat выполняются научные исследования по обнаружению признаков землетрясений. Спутник был изготовлен в Лаборатории разработки космических систем Стэндфордского университета (США) под руководством профессора Роберта Твиггса (Robert Twiggs). На QuakeSat планируется проверить теорию о том , что в преддверии крупных землетрясений в районе стихийного бедствия регистрируются магнитные поля крайне низкой частоты (КНЧ лежит в диапазоне от 5 Гц до 2 кГц). Для регистрации этих предшественников землетрясения на QuakeSat установлен основной научный прибор-магнитометр.

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
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Дополнительная классификация

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

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг5
2Батареи, Li - ионные2
3Солнечные батарея, панелей (10 GaAs ячеек на панели)12
4Габариты (свернутое состояние), см10x10x30
5Габариты (с развернутыми панелями), см150x80
6Скорость (передачи данных), бод9600
7Мощность, Вт14
8Мощность (полезной нагрузки), Вт3.6
9Мощность (трансмиттера), Вт1.4
10Размер (системы хранения), мегабайт128
11Размер (системы хранения для данных), мегабайт64
12Процессор, Prometheus PC-1041

Характеристики орбиты

#ХарактеристикаЗначение
1Наклонение, град98.7
2Апогей, км835.4
3Перигей, км820.7
4Период, минут101.3
5САС, месяца24
6Длинный диаметр эллипса, км7199

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2003-031F

Информация об удачном запуске

#ХарактеристикаЗначение
1Космодром Плесецк
2Дата пуска2003-06-30 at 14:15:00 UTC
3Полезная нагрузка 1xMonitor-E/Breeze
4Полезная нагрузка 1xMimosa
5Полезная нагрузка 1xDtusat
6Полезная нагрузка 1xMOST
7Полезная нагрузка 1xCute 1
8Полезная нагрузка 1xQuakesat
9Полезная нагрузка 1xAAU Cubesat
10Полезная нагрузка 1xCANX 1
11Полезная нагрузка 1xCubesat X.1
12Ракета-носитель 1xРокот

Найдено 126 документов по запросу «Quakesat». [Перейти к поиску]


Дата загрузки: 2017-03-10
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0.35/5
... Concept for Space Science Missions: QuakeSat as an Operational Example Scott... large earthquakes. An inexpensive nanosat (QuakeSat) was built, launched in June... CubeSat. And with that the QuakeSat concept currently on orbit was... vehicles Figure 3. QuakeSat on display before shipping for launch QuakeSat, weighing under... limited. Table 1. QuakeSat Payload Parameters Item Magnetometer Specs QUAKESAT Sensitivity Dynamic Range An early look into possible QuakeSat designs... Attitude Determination On Board Computer QuakeSat’s magnetometer has a theoretical sensitivity or... samples per second. A to D Storage QuakeSat flies a nearly circular, sun–synchronous... “flying the terminator” aspect has QuakeSat over its target during the... day for the ionosphere. Table 2. QuakeSat Satellite Parameters Size Weight Power... watts BOL 3.6 watts continuous Power QuakeSat power is provided by 12... GaAs cells in two strings. QuakeSat uses two Li Ion battery... failure. Since the battery failures, QuakeSat’s link margin and therefore its... all is working Attitude Control QuakeSat’s attitude control system is passive... 4. QuakeSat Software Architecture DESIGNING AND BUILDING FOR OPERATIONS Building and launching QuakeSat... the data we did collect. QuakeSat uses a Diamond Systems Prometheus PC104... Linux OS. Communications Communications with QuakeSat is done over the HAM...). We use basic Pacsat protocols. QuakeSat can be seen as just... minute must be wisely used. QuakeSat’s Vehicle Flight Software (VFS) was... a crude model of our attitude. QuakeSat attitude is not magnetic field... controller File Transfer PFS/PFR QuakeSat Executive Attitude determination was to... station. Upon receipt of two QuakeSat beacons the beacon 5 18th Annual... file has been completely downloaded. QuakeSat accesses to these targets are... turn is then uplinked to QuakeSat. Since download time is a premium... a signal to originate from. Should QuakeSat survive its current eclipse period... the packet level comm. with QuakeSat can at times be poor... received and executed on board QuakeSat, but the acknowledged response not..., tasking and collecting data from QuakeSat we need to analyze the... and analysis tools, both for QuakeSat collected data and our ground...’s sensor data.). Tasking and Targeting QuakeSat has a unique targeting problem, the... Signal Region at QuakeSat Mean Orbital Altitude QuakeSat Orbital Path Magnetic Field... process are available at our QuakeSat web site. http://ssdldelta.stanford... modeled path to the mean QuakeSat attitude. For point signal sources... surveys were made. number of QuakeSat generated signals, and up loaded... targeting model. Finally in December QuakeSat was really humming. On a good... SSC04-IX-4 are received by QuakeSat. A characteristic J hook shape, (a rear facing... vs frequency vs intensity surface). QuakeSat carried a wider band instrument covering... one of the missions of QuakeSat was to determine how broad... Border Region earthquake. Figure 8. Likely QuakeSat sensitivity overlain on a “Cosmos 1809... Small Satellites SSC04-IX-4 Figure 9 QuakeSat collections during the 2 week post... though QuakeSat is no longer at full operational capability. The QuakeSat noise... year, exactly one year after QuakeSat to further investigate this phenomenon... design of QuakeSat 2, a larger, (likely a small microsat) improved version of QuakeSat. Additions..., August 2002. T. Bleier, et al, ”QuakeSat Lessons Learned: Notes from the... during the development of QuakeSat, without them the QuakeSat project would not... group of individuals on the QuakeSat team (alphabetically): Tom Bleier, Paul... Eric Tapio, without them the QuakeSat mission would not have been...



Дата загрузки: 2017-01-04
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0.16/5
QuakeSat Lessons Learned: Notes from the ... Eric Tapio This report of QuakeSat lessons learned is a compendium of... be required. The cost of QuakeSat (and the 3 engineering models built... the major components used in QuakeSat. These parts have now been..., they have performed very well. QuakeSat exploded for display in our.... The beacon should be strong (QuakeSat had 1 watt output at 436... to easily detect the satellite (QuakeSat was 1 packet—a 200-byte payload..., often swamping out other signals. QuakeSat had a sensitive magnetometer, so internal... ways to do this for QuakeSat. (a) Use error detection and correction... send/receive protocols. The way QuakeSat uses AX.25, a single bit... the data being transmitted. Although QuakeSat uses bzip to compress our... was the case with the QuakeSat CPU vendor. Specifically, Diamond Systems... building an operating system for QuakeSat was as simple as burning... QuakeSat Executive Ax.25 and other Device Drivers WatchDog Linux OS QuakeSat... diagnostic data. For example, on QuakeSat it would have been useful... right type of oven). 14 QuakeSat being loaded into its PPOD... a problem with certain components. In QuakeSat, the CPU, the power transistor... have been unable to push QuakeSat out. Another concern was the... Design (CAD) The development of QuakeSat, from the initial design to... that was used throughout the QuakeSat project lifecycle. 2.4.6.1 Key Features of... from the start. After several QuakeSat parts drawings had come together... was necessary to accommodate the QuakeSat antenna mounts and the tip... the front faceplate of the QuakeSat bus. For both of these... that was delivered to the QuakeSat team. Within a few hours time... used in the for-flight QuakeSat P-Pod. Figure 1. Original P-Pod pusher... top faceplate 17 of the QuakeSat structure while giving critical parts.... To do this, the Integrated QuakeSat model (with antennas and folded... P-Pod pusher foot, spring, and QuakeSat top plate assembly, as well... QuakeSat assemblies are shown in figures 3 and 4. Figure 3. Pusher Plate, Spring & QuakeSat Antenna Assembly Figure 4. Integrated Stowed QuakeSat & P-Pod Assembly with... images are of the integrated QuakeSat small satellite, both of the... different configurations. Figure 5. Integrated QuakeSat Figure 6. Integrated QuakeSat Assembly, Deployed Configuration 2.4.6.4 Assembly... into CAD suites. 2.5 Power System QuakeSat had a number of challenges with... with respect to power. However, QuakeSat’s batteries did fail within 4 days... 2 Li-Ion batteries used in QuakeSat are very sensitive to any.... 2.7 2.7.1 Other Sensors Telemetry Multiplexers The QuakeSat telemetry system had over 30...” the CPU if it halts. QuakeSat had a watchdog circuit board (built... through a complete cold reboot sequence. QuakeSat also had a DTMF (dual-tone... Fairbanks 3.2 Ground Station Software The QuakeSat ground station software performs three... At the end of the QuakeSat mission, this new ground station... difficult. The engineering model of QuakeSat enabled software and hardware debugging... recovery. 4 Ground Control Software The QuakeSat contact software is a Linux graphical... on the support staff. The QuakeSat contact software evolved from a GUI... memory and disk utilization. The QuakeSat flight operations included sixteen contacts... course of the project the QuakeSat team developed satellite scripts that... is true in both directions. QuakeSat avoided any command response situation... of hardware items used on QuakeSat were purchased off the shelf... starts. In the case of QuakeSat, the mission had a very 29..., most of which are obvious. QuakeSat and team performing the solar... on a booster as a secondary payload. QuakeSat has accelerometers on the P-Pod... the umbilical, do so. 33 QuakeSat in its P-Pod on a vertical... was a multi-million dollar accident. QuakeSat in the Lockheed-Martin Antenna... time for these tests lead QuakeSat’s primary payload to be less... with Stanford, a join UCLA, HIPAS, QuakeSat atmospheric experiment, a few 10 HZ... QuakeSat entered it yearly eclipse period, for the next 2 months, QuakeSat will... or two collections a week. Should QuakeSat survive through the eclipse period... then. As of this writing QuakeSat had 37 most recently collected... reboots of over 2 weeks allowed QuakeSat to support a limited but operational... factor negatively impacting communications was QuakeSat’s antenna orientation to the ground... their knowledge with new students. QuakeSat was produced as a collaborative effort... on the “market value”. 44 QuakeSat mounted on the flight booster...



Дата загрузки: 2017-03-10
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0.08/5
... 5.2.2 One Shot: CP5 . . . . . . . . . . . . . . . . . . . . . 77 5.2.3 Science: QuakeSat . . . . . . . . . . . . . . . . . . . 78 5.2.4 Science: RAX-2 . . . . . . . . . . . . . . . . . . . . . 79 Results... . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 ix CONTENTS 5.3.2 CP5 . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 5.3.3 QuakeSat . . . . . . . . . . . . . . . . . . . . . . . . 90 5.3.4 RAX-2 . . . . . . . . . . . . . . . . . . . . . . . . . . 94 6 Conclusion 6.1 99... window . . . . . . . . . . . 77 5.9 QuakeSat mission badge . . . . . . . . . . . . . . . . . . . . 78 5.10 Screenshot of QuakeSat CMPT setup... of QuakeSat Print Screen . . . . . . . . . . . . . 90 5.22 Screenshot of Shortest Access for QuakeSat . . . . . . . . . . 91 5.23 Screenshot of Percent Downlinked for QuakeSat . . . . . . . 91... mission . . . . . . . . . . . . . . . . 77 5.5 Parameters for the QuakeSat mission . . . . . . . . . . . . . 78 5.6 5.7 Parameters for the... CP5 5.9 The Results of the QuakeSat Mission . . . . . . . . . . . . . 90 . . 86 5.10 Comparsion... for the One-Shot case, QuakeSat for the science mission with... station network. Mission CP6 CP5 QuakeSat RAX-2 Type Initial Attempt One... 77 5. CASE STUDIES 5.2.3 Science: QuakeSat The QuakeSat mission demonstrated techniques to detect... downlink earthquake ELF emission data. QuakeSat demonstrated the feasibility of utilizing..., short mission life satellite. Figure 5.9: QuakeSat mission badge Parameter Amount of... for the QuakeSat mission Figure 5.10: Screenshot of QuakeSat CMPT setup window... STUDIES 5.3.3 QuakeSat Figure 5.21: Screenshot of QuakeSat Print Screen The QuakeSat mission shows... of downlinking available. However, since QuakeSat uses only one ground station... methods will not be examined. QuakeSat will be used in comparsion....4 5.8 Table 5.9: The Results of the QuakeSat Mission 90 5.3 Results Shortest Access...: Screenshot of Shortest Access for QuakeSat One of the major limiting... density should be intitutive since QuakeSat was only downlinking over Stanford... period. Conclusion In 2003 when QuakeSat was launched, the amateur radio... for the CubeSat community. If QuakeSat flew today, it would have... single station missions, QuakeSat was used as a benchmark. QuakeSat published some documentation... over the mission life. The QuakeSat team explained that on a good... that with a 100 % duty cycle, QuakeSat will be downlinking 4.8 MB-7.2 MB... Station Survey Results. 35 [33] QuakeSat Lessons Learned: Notes from the... Concept for Space Science Missions: QuakeSat as an Operational Example, 2004...‐2 Initial Stanford University and Quakefinder QuakeSat Norwegian University of Science and...



Дата загрузки: 2017-06-15
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0.06/5
... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.7.1 Hardware Design . . . . . . . . . . . . . . . . . . . 6.7.2 Software Design . . . . . . . . . . . . . . . . . . . . 6.7.3 Analysis . . . . . . . . . . . . . . . . . . . . . . . . 6.8 QuakeSat . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.8.1 Operating System Selection . . . . . . . . . . . . . 6.8.2 Satellite Software... Wuerzburg ITU-pSAT [6.4] KySat-1 [6.5] MEROPE [6.6] QuakeSat [6.8] STUDSAT [6.9] PW-Sat [6.7] UWE-1 [6.10.... 6.8 QuakeSat Lessons Learned: Notes from the Development of a Triple CubeSat QuakeSat [31... of their software system. The QuakeSat mission selected a COTS single board... code-base and support, the QuakeSat team only had to write... was device driver code. The QuakeSat team did recognize some disadvantages... to the greater flexibility 80 6.8 QuakeSat provided by the existing code... handling is done by the “QuakeSat Executive”, which receives a command and... commands. After the launch of QuakeSat, testing revealed that the existing... PROJECTS 6.8.3 Analysis Given that both QuakeSat and the new PolySat avionics... the reasons given by the QuakeSat team for using Linux, such... future for higher network efficiency. QuakeSat’s software architecture running atop Linux... lies in the fact that QuakeSat opts for a command handler layer... a number of “worker programs”, as QuakeSat uses. This enables greater flexibility... Lorenz, Allen and Tapio, Eric. QuakeSat Lessons Learned: Notes from the...



Дата загрузки: 2017-04-08
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0.03/5
... . . . . . 3.1.2 DTUsat-1 . . . . . . . . 3.1.3 CanX-1 . . . . . . . . . 3.1.4 Cute-1 (CO-55) . . . . . 3.1.5 QuakeSat-1 . . . . . . . 3.1.6 XI-IV (CO-57) . . . . . 3.2 SSETI... DTUsat-1 CanX-1 Cute-1 (CO-55) QuakeSat-1 XI-IV (CO-57) XI... on Tokyo Tech’s newer satellites. 3.1.5 QuakeSat-1 Stanford University and QuakeFinder LLC... in the aftermath of a Figure 6: QuakeSat-1 model on strong earthquake. The... returned inconclusive scientific results[21]. QuakeSat-1 also used two ground stations... the satellite becomes non-responsive. QuakeSat-1 ground operators used a simple DTMF... 24 satellites over 5 years. Without QuakeSat-1 and CanX-2, this number drops... ground station in Alaska for QuakeSat-1 but over a much larger scale..., C. Dunson, S. Flagg, A. Lorenz, and E. Tapio. “QuakeSat Lessons Learned: Notes from the... Concept for Space Science Missions: QuakeSat as an Operational Example.” In...



Дата загрузки: 2017-04-09
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0.04/5
... . . . . 3.1.1 AAU1 CubeSat . 3.1.2 DTUsat-1 . . . . 3.1.3 CanX-1 . . . . . 3.1.4 Cute-1 . . . . . . 3.1.5 QuakeSat-1 . . . 3.1.6 XI-IV . . . . . . 3.2 SSETI Express Launch...) Object 27846 27847 27844 DTUsat-1 QuakeSat-1 XI-IV (CO-57) 27842..., or approximately 40 minutes[16]. 8 3.1.5 QuakeSat-1 Stanford University and QuakeFinder collaborated... 6: QuakeSat-1 on VLF receiver experiment returned inconclusive results[19]. display[19]. QuakeSat... the satellite becomes non-responsive. QuakeSat-1 ground operators used a simple DTMF... now is very small. Excluding QuakeSat-1 and the Japanese CubeSats, the... ground station in Alaska for QuakeSat-1 but over a much larger scale..., L., Dunson, C., Flagg, S., Lorenz, A., and Tapio, E. “QuakeSat Lessons Learned: Notes from the... Concept for Space Science Missions: QuakeSat as an Operational Example.” In...



Дата загрузки: 2017-09-24
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0/5
... Figure page 1-1 Single CubeSats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 1-2 QuakeSat-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 1-3 NASA’s 3U CubeSats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32...], DTUSat [13], CanX-1 [14] and QuakeSat [15], were put into a Sun... the CubeSats aboard Rockot, except QuakeSat which was a triple cube, were... on PC104 form factor PCBs. QuakeSat-I [15, 28], shown in Fig..., and a Linux based operating system. QuakeSat-I provided data for early detection... on Delfi-C3 [29] and QuakeSat have proved larger power generation... Based On-board Computer Figure 1-2. QuakeSat-1 Sun synchronous baseline orbit, gave... interacting with the geomagnetic field. QuakeSat-I utilized the gravity gradient stabilization... satellites. 1.4.2 Earth and Space Observing QuakeSat-I [15, 28], a triple CubeSat developed... via fluorescent reporters in microgravity QuakeSat: Measure extra-low freq. magnetic... to the subsystem architecture of QuakeSat-1. An integrated central processing unit... concept for space science missions: QuakeSat as an operational example,” Proc..., L., Dunson, C., Flagg, S., Lorenz, A., and Tapio, E., “Quakesat lessons learned: Notes from the...



Дата загрузки: 2017-05-20
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0.07/5
... никовой системы QuakeSat бортового компьютера. Основанием для создания спут ника QuakeSat явилось... ких дней до возникновения крупных QuakeSat является отлич землетрясений, обеспечивая таким... постоя ребляемая мощ Cуперкомпактный спутник QuakeSat ервый из двух описываемых проектов... PC/104. Новейший и суперкомпактный спутник QuakeSat, спроектированный специально для исследования и предсказания... раз в месяц. Основной миссией спутника QuakeSat является получение доказательств возможнос ти... по всему миру. Конструктивно спутник QuakeSat реализован с размерами всего 4" x 4" x 12" ( прим...



Дата загрузки: 2017-01-04
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0.21/5
QuakeSat Thermal Vacuum Test Plan QuakeFinder .... QuakeSat Project, QuakeFinder Tel (650) 838-0953, sflagg@quakefinder.com QuakeSat Thermal... vacuum test plan for the QuakeSat satellite and P-Pod launcher assembly... 2.1 Overview For this test the QuakeSat spacecraft and the P-Pod launcher... the 5’ thermal vacuum chamber. The QuakeSat spacecraft will be placed in... be placed next to the QuakeSat in a launch like configuration (ie... run time is approximately 4 hours. QuakeSat Thermal Vac Test Plan Page... manually in real time. The QuakeSat spacecraft will be controlled thru... correct. 2.2 Test Execution Overview The QuakeSat spacecraft and P-Pod assembly will... the electronics in a spacecraft. 1. 2. 3. 4. Install QuakeSat and P-Pod in the chamber... spacecraft. 5. Enable TVHK command load. QuakeSat Thermal Vac Test Plan Page... chamber. QuakeSat Thermal Vac Test Plan QuakeSat/ P-Pod Axis Page 5 -X=3 -Y=4 +Z P-Pod -Z +Y=2 +X=1 QuakeSat/P-Pod...



Дата загрузки: 2017-01-04
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0.19/5
QuakeSat: Low Cost University/Commercial Nanosatellite ... Bob.Twiggs@stanford.edu QuakeSat and Team Nanosat (QuakeSat) Size Deployable Radio... 2 feet Total weight = 9.9 lbs (4.5 kg) QuakeSat Status È Successful launch on June... (Spitak Armenia) 240 sec. sample QuakeSat and P-POD Linux and Prometheus... hog 2.5 W – Flexibility require more testing!! QuakeSat Tasking & Data Flow Concept AX... QuakeSat Offset Targeting Likely Signal Region at QuakeSat Mean Orbital Altitude QuakeSat Orbital... Offset 1 to 10 deg Lat. QuakeSat Collection Geometry Dec 30 Dec... goes a long way Back Up QuakeSat Costs • $ 50K for satellite parts... sensitive technology – For P-POD and QuakeSat • • • DSP-5 (ITAR) -for permanent export... 6 mo. (internal staff, then consultant) QuakeSat History ¾ Stanford (Prof. Bob Twiggs... Sensors (Schools) www.EarthquakeTracker.com QuakeSat Operations ----- earthquake zones ------ magnetic offset...