Summary:  of the Palapa B2 and Westar VI satellites were EVA tasks identified very early in the program. Later, EVA became... and Westar VI satellites. An a-frame was also provided to secure the Palapa B and Westar satellites... the manned maneuvering unit/stinger and mated it to the ...

Source: Jet Propulsion Laboratory, Machine Learning Systems Group

Collection: Computer Technologies and Information Sciences

Summary:  ; rendezvous and docking; and value-added modifications to a satellite's position, orientation, and operational... constitutes one pathway to a responsive space enterprise. Following launch, traditional satellite operations... environment of space. On-orbit servicing offers satellite operators an option for maintaining or ...

Source: de Weck, Olivier L. - Department of Aeronautics and Astronautics, Massachusetts Institute of Technology (MIT)

Collection: Engineering

Summary:  is a broadcasting contract signed in April 2008 with the operator of the Palapa C2 satellite (owned by Indonesia 29... broadcasting through Eutelsat (European Telecommunications Satellite Organisation), a limited company under... time ever had ordered a telecommunications satellite operator to cease ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  , supplies, satellites, and other equipment-- much as an airplane ferries people and their luggage... and military space programs and be a cheaper way to launch satellites. Nixon, the Space Task Group proposals... reconnaissance satellites. A smaller payload bay would require the Air Force to retain their expendable launch

Source: Jet Propulsion Laboratory, Machine Learning Systems Group

Collection: Computer Technologies and Information Sciences

Summary:  (small boats) for a memorable ride among whales. Lunch is in a palapa at the lagoon

Source: Hampton, Randy - Division of Biological Sciences, University of California at San Diego

Collection: Biology and Medicine

Summary:  and Astronautics Abstract The consequences of satellite misplacement or collision with space debris reach far... that satellite makers face today is the lack of a margin of error of any type. This thesis analyzes the business... to redundancy and replacement option. The main objective of a space tug is to prevent satellites from

Source: Massachusetts Institute of Technology (MIT), Space Systems Laboratory; de Weck, Olivier L. - Department of Aeronautics and Astronautics, Massachusetts Institute of Technology (MIT)

Collection: Engineering

Summary:  Relationahips 27 Appendix B The Role of the GOES Satellite. 37 i ;; #12;#12;ABSTRACT This study shows that many... technology, including satellites, for significantly improving early tsunami warning along vulnerable coastal... and equipment installation in a test area, is a requisite step in developing a satellite-based network

Source: National Oceanic and Atmospheric Administration, Pacific Marine Environmental Laboratory, Atmopsheric Chemistry and Global Change Program

Collection: Geosciences ; Environmental Sciences and Ecology

Summary:  , such as two communications satellites-- Anik C-2 and Palapa Bl--launched from Space Transportation System (STS... in the unique characteristics of orbital spaceflight. These included launching commercial-use satellites... )-7 (1983). The shuttle phased out launching commercial satellites after the Challenger ...

Source: Jet Propulsion Laboratory, Machine Learning Systems Group

Collection: Computer Technologies and Information Sciences

Summary:  , 488 Palapa B2, 111, 116 Palapa satellites, 23 Parachute Refurbishment Facility, 87 Paragon Vision... animal studies in microgravity, 410­418, 480 anthropomorphic density phantom, 453 anti-g suit, 385 anti-satellite... Augustine, Norman, 470 Aura satellite, 351 aurora australis, 48 ...

Source: Jet Propulsion Laboratory, Machine Learning Systems Group

Collection: Computer Technologies and Information Sciences

Summary:  circular orbit in constellation B: B = 2 r3 B E , (20) #12;Author's personal copy O.L. de Weck et al... as described above and can be calculated [3] as V sub phasing = 2 GMEarth × 1 rB - 2 rB - - + k -2/3 (k + 1... .elsevier.com/locate/actaastro Optimal ...

Source: de Weck, Olivier L. - Department of Aeronautics and Astronautics, Massachusetts Institute of Technology (MIT)

Collection: Engineering

Summary:  . Experience a second adventuresome ride among whales. Lunch is in a palapa in the lagoon

Source: Hampton, Randy - Division of Biological Sciences, University of California at San Diego

Collection: Biology and Medicine

Summary:  (small boats) for a memorable ride among whales. Lunch is in a palapa at the lagoon. Return to San

Source: Hampton, Randy - Division of Biological Sciences, University of California at San Diego

Collection: Biology and Medicine

Summary:  Ignacio Lagoon. Experience a second adventuresome ride among whales. Lunch is in a palapa in the lagoon

Source: Hampton, Randy - Division of Biological Sciences, University of California at San Diego

Collection: Biology and Medicine

Summary:  with Palapa B-2, Allen jetted to the satellite with the backpack and attached a capture device. Fisher used... ............................................................................... 98 PICO-SATELLITE SOLAR CELL TESTBED... and heavy payload capability as well as a cross range of 1,265 miles to launch large ...

Source: Jet Propulsion Laboratory, Machine Learning Systems Group

Collection: Computer Technologies and Information Sciences

Summary:  and Application Main approach for international cooperation Earth observation with Nano-Satellite development... ] · Collaborative R&D (Space and aviation technology development, Analyses of satellite imagery etc.) · Training... (Development and operation of satellite etc.) · Consulting and support for national space ...

Source: Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Plasma

Collection: Plasma Physics and Fusion

Summary:  both of Telesat's on orbit satellites were severely damaged by solar activities. It then discusses... the six months of work performed by Telesat staff to recover the other totally lost Anik E2 satellite... . From Mission Analyst to Director of Satellite Operations at Telesat, Bruce worked in the Space Systems

Source: Dawson, Jeff W. - Department of Biology, Carleton University

Collection: Biology and Medicine

Summary:  contamination of satellite pixels over the water close to the shore) were limited on the R(B2)/R(B1) spectral... 2 to B1 water reflectance ratio (R21 ¼ R(B2)/ R(B1)): SPM ¼ 12:996 Â exp R21 0:189 ; R2 ¼ 0:89; n... /06/2005), the ratios [(Rtoa ...

Source: Laboratoire d'Océanographie de Villefranche, Marine Optics and Remote Sensing Lab.

Collection: Environmental Sciences and Ecology ; Geosciences

Summary:  Performance Analysis of LEO Satellite Networks A. Halim Zaim, Harry G. Perros, and George N... ,hp,rouskas@eos.ncsu.edu Abstract. We present an analytical model for computing call blocking probabilities in a LEO satellite... network that carries voice calls. Both satellite-fixed and earth-fixed constellations with inter

Source: Rouskas, George N.- Center for High Performance Simulation & Department of Computer Science, North Carolina State University

Collection: Computer Technologies and Information Sciences

Summary:  -Planck-Institute for Software Systems, University of Washington SatelliteLab: Adding Heterogeneity toSatelliteLab: Adding... Heterogeneity to PlanetaryPlanetary--Scale TestbedsScale Testbeds 2. How SatelliteLab works1. Overview Internet... as they are often behind NATs SatelliteLab enables heterogeneous edge ...

Source: Dischinger, Marcel - Max-Planck-Institut für Softwaresysteme

Collection: Computer Technologies and Information Sciences

Summary:  F or more than 50 years, NOAA has operated earth- observing satellites and collected, processed... , and distributed the data from these satellites to provide life-saving weather forecasts, measure ocean... satellites are the backbone of weather forecasts, climate research, and environmental assessments that result

Source: National Oceanic and Atmospheric Administration, Pacific Marine Environmental Laboratory, Atmopsheric Chemistry and Global Change Program

Collection: Geosciences ; Environmental Sciences and Ecology

Summary:  la Universidad Aut´onoma Metropolitana de Izta- palapa, M´exico, June 18, 1992. · Generation of Chaos

Source: Carretero, Ricardo - Department of Mathematics and Statistics, San Diego State University

Collection: Physics ; Mathematics

Summary:  over other algorithms, such as Wilson, domain wall, #12;FIGURE 7. A lattice of palapas at the 2004

Source: Creutz, Michael - High Energy Theory Group, Brookhaven National Laboratory

Collection: Physics

Summary:  Micro-Navigation Satellite Network Design and Analysis Bei Kang, Electrical and Computer... of Satellite Communications Systems. He joined academia in 2000 at the University of North Dakota... , satellite control, and sensor networking. ABSTRACT Accurate position and orientation data are the bases

Source: Won, Chang-Hee - Department of Electrical and Computer Engineering, Temple University

Collection: Engineering

Summary:  -Blocking Probabilities in LEO Satellite Networks: The Single-Orbit Case Abdul Halim Zaim, George N. Rouskas, Senior... calls over a low-earth-orbit satellite network and present an analytical model for computing call... -blocking probabilities for a single orbit of a satellite constellation. We have devised a method to solve

Source: Rouskas, George N.- Center for High Performance Simulation & Department of Computer Science, North Carolina State University

Collection: Computer Technologies and Information Sciences

Summary:  National Satellite Technology Program Dr. Turki Al-Saud KACST #12;National Satellite Technology... Program Nano Satellites Program Remote Sensing Satellites Program Going big in size, weight... and ambition (The GEO Program) #12;National Satellite Technology Program Space Research ...

Source: Prinz, Friedrich B. - Department of Materials Science and Engineering, Stanford University; Stanford University - Department of Aeronautics and Astronautics, Aircraft Aerodynamics and Design Group

Collection: Engineering ; Materials Science

Summary:  Opportunities and Challenges of Nano Satellites August, 2010 Rei Kawashima AXELSPACE Corporation... #12;2 AXELSPACE - Who are we? Space venture company specialized in nano-satellites. Developer of nano-satellites... conceptual design, manufacture, testing, launch to satellite operation Established in ...

Source: Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Plasma

Collection: Plasma Physics and Fusion

Summary:  of this circle with another sphere gives (at most) two points. Hence: · If you know the position of 3 satellites... · and you know the distance that separates your receiver from each of the 3 satellites · then you... of the 2-dimensional case with two satellites). #12;Mathematically If · p(k) R3 is the position

Source: Petitpierre, Claude - Faculté Informatique et Communications, Ecole Polytechnique Fédérale de Lausanne

Collection: Computer Technologies and Information Sciences

Summary:  The Center for Satellite and Hybrid Communication Networks is a NASA Commercial Space Center... ://www.isr.umd.edu/CSHCN/seminar/seminar.html The Advanced Networks Colloquium Series Presented by the Center for Satellite and Hybrid Communication Networks... "Topics in Satellite Networking" Abstract: Satellite ...

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  the distances of the hand-held to 3 or 4 satellites to locate itself on the Earth. By getting the distances... to four satellites you can locate where you are in 3- dimensional space. 2. In general, how are those... distances calculated? Once a GPS receiver has fresh almanac (satellite health data) and ephemeris ...

Source: Schweik, Charles M. - Department of Natural Resources Conservation, University of Massachusetts at Amherst

Collection: Environmental Sciences and Ecology

Summary:  in the spherical coordinate system is r = r(cos cos )b1 + r(sin cos )b2 + r(sin )b3 (1) where (b1 b2 b3... : r = r(cos cos ; sin cosi sin )b1 +r(cos sin + sin cosi cos )b2 + r(sin sini)b3 (4) Equating... SATELLITE MOTION AROUND AN OBLATE PLANET: A ...

Source: Danielson, Don - Department of Applied Mathematics, Naval Postgraduate School

Collection: Mathematics

Summary:  expressions (25) and (9) we arrive at the phase-space DF: n(r; ; v; Â; ) = N+ B( ) 2 r2v2 sin sin  f( M; u... for the phase-space DF: n(~r; ; ~v; Â; ) = N+ B( ) 2 r2 Mv3 esc 1 ~r ~v ~u 2 1 sin  cos sin M ×f( M; ~u; ; M... .elsevier.com/locate/pss ...

Source: Potsdam, Universität - Institut für Physik, Arbeitsgruppe Nichtlineare Dynamik

Collection: Physics

Summary:  hang out in the shade of a palm-covered palapa, an open-sided gazebo that functions as the team... into their pickup trucks. Others hang out beneath the palapa, where some consola- tory tequila swilling and singing

Source: Colorado School of Mines, Center for Experimental Study of Subsurface Environmental Processes

Collection: Environmental Management and Restoration Technologies ; Geosciences

Summary:  get the differ- ence of distances to two satellites. Each GPS satellite sends periodically signals... which are triggered by an atomic clock. While the distance to each satellite is not known... , the difference from the distances to two satellites can be determined from the time delay of the two signals

Source: Knill, Oliver - Department of Mathematics, Harvard University

Collection: Mathematics

Summary:  Aleksandar KOSTADINOV: Expected performance of Orbit Determination of the GALILEO Satellites... satellite navigation system. The system will consist of about 30 satellites in medium earth... orbits (MEOs) at 23600 km altitude. The launch of the first GALILEO satellites can be expected

Source: Schuh, Harald - Institut für Geodäsie und Geophysik, Technische Universität Wien

Collection: Geosciences

Summary:  SaVi satellite constellation visualization CCSR Research Symposium 2011 ­ Lloyd Wood, Research... orbital geometry. SaVi simulates and animates satellite motion, and shows the coordinated movement... and coverage that results from multiple satellites orbiting to form a particular satellite constellation

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  LECTURE Why satellite networking often isn't really satellite networking, and what can be done... about it: moving satellites towards a fuller networking role. Lloyd Wood Global Defense and Space Group... , Cisco Systems Abstract Networking via satellites is currently done by a range of separate, non

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  Satellite Handover Techniques for LEO Networks E. Papapetrou, S. Karapantazis, G. Dimitriadis, F... -N. Pavlidou Abstract Low earth orbit (LEO) satellite constellations could play an important role in future... delays. However, because of the non-stationarity of the satellites, a call may be subjected to handovers

Source: Papapetrou, Evaggelos - Department of Computer Science, University of Ioannina

Collection: Computer Technologies and Information Sciences

Summary:  up to 0.1 milliarcseconds. In order to assemble into a formation, these satellites must first locate... each other using limited field-of-view sensors. Once the satellites are in a formation, the path length... of the light going to the combiner satellite must be controlled to nanometer levels to produce an image of high

Source: Massachusetts Institute of Technology (MIT), Space Systems Laboratory

Collection: Engineering

Summary:  NOAA Satellite Operations Facility The National Oceanic and Atmospheric Administration (NOAA... 's environmental satellite and data processing operations. The NOAA Satellite Operations Facility (NSOF), located... 's 24/7 satellite program operations, which were previously housed in the decaying World War II

Source: National Oceanic and Atmospheric Administration, Pacific Marine Environmental Laboratory, Atmopsheric Chemistry and Global Change Program

Collection: Geosciences ; Environmental Sciences and Ecology

Summary:  Satellite Data Networks Rizwan Mustafa Mir, mir.2@osu.edu This paper provides a brief overview... to Satellite Data Network Communications. It discusses the latest trends in satellite communication technology... and protocols for data networks on satellite channels. Other Reports on Recent Advances in ...

Source: Jain, Raj - Department of Computer Science and Engineering, Washington University in St. Louis

Collection: Computer Technologies and Information Sciences

Summary:  INTRODUCTION Satellites contain onboard equipment for sens- ing Earth and space, and communications... , satellites are classified into three types: geosyn- chronous Earth orbit (GEO), medium Earth orbit (MEO... ), and low Earth orbit (LEO). LEO satellites have several advantages, such as low propagation delay and low

Source: Atiquzzaman, Mohammed - School of Computer Science, University of Oklahoma

Collection: Computer Technologies and Information Sciences

Summary:  Navigating at the Speed of Satellites lesson (http://www.teachengineering... switched from using natural objects to human-created satellites. A constellation of satellites, called... the students why satellites are a good tool for navigation. (Answer: They are "visible" for thousands of miles

Source: Dever, Edward P. - College of Oceanic and Atmospheric Sciences, Oregon State University

Collection: Geosciences

Summary:  Using Outage History to Exclude High-Risk Satellites from GBAS Corrections Sam Pullen and Per Enge... assume that all GNSS satellites have the same failure probability. The assumed failure probability... is conservative such that variations among satellites in a given GNSS constellation are not expected to violate

Source: Stanford University - Global Positioning System (GPS) Lab.

Collection: Engineering

Summary:  Asymptotic stability of the synchronous resonance for an elastic satellite with internal friction... Asymptotic stability of the synchronous resonance for an elastic satellite with internal friction Emanuele... stability of the synchronous resonance for an elastic satellite with internal friction The physical

Source: Thomann, Laurent - Laboratoire de Mathématiques Jean Leray, Univeristé de Nantes

Collection: Mathematics

Summary:  -Blocking Probabilities in LEO Satellite Constellations Abdul Halim Zaim, Harry G. Perros, Senior Member, IEEE, and George... -blocking probabilities in a low earth orbit (LEO) satellite network that carries voice calls. Both satellite- and earth... satellite. Also, we assume that call arrivals are Poisson ...

Source: Perros, Harry - Center for High Performance Simulation & Department of Computer Science, North Carolina State University; Rouskas, George N.- Center for High Performance Simulation & Department of Computer Science, North Carolina State University

Collection: Computer Technologies and Information Sciences

Summary:  and Borkowski, V. 3 The search for binary planets and for satellites of extrasolar planets is rele- vant... characteristics of planets. The presence of numerous satellites of Jupiter and Saturn tend to prove... of a satellite around its parent planet (or of a binary planet) has 4 remarquable phases: - Phase 1: ...

Source: Arnold, Luc - Observatoire de Haute-Provence

Collection: Physics

Summary:  Evaluating the Dependability of a LEO Satellite Network for Scientific Applications Eleftheria... , whs}@uiuc.edu Abstract Dependability is an important issue in LEO satellite net- works. In this paper... , we study the dependability of a pro- posed LEO satellite network for scientific data collection based

Source: Illinois at Urbana-Champaign, University of - Department of Electrical and Computer Engineering, Performability Engineering Research Group

Collection: Computer Technologies and Information Sciences

Summary:  Cooperative Research Programs (CoRP) Satellite Climate Studies Branch (SCSB) Global Precipitation... .5°x2.5° latitude/longitude ­ Merged satellite and gauge, error estimates ­ Satellite components... products, e.g., merged satellite estimates ­ Daily 1 x 1 degree, Pentad Global Precipitation Climatology

Source: Kuligowski, Bob - Satellite Meteorology and Climatology Division, Center for Satellite Applications and Research, NOAA

Collection: Environmental Sciences and Ecology ; Geosciences

Summary:  Introduction to satellite constellations orbital types, uses and related facts Dr Lloyd Wood space... that satellite moves at same angular velocity as Earth's rotation, so appears still. (period: 1 sidereal day... .) · Three satellites spaced equally around the Equator cover most of Earth ­ but not the poles. (Arthur C

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  Satellite Communications David Hart, dhart@cis.ohio-state.edu This paper is intended to give... an overview of that methods of and uses for satellite communications, in addition to presenting recent trends... Page Table of Contents Introductionq Basic Elementsq Various Uses of Satellite Communications

Source: Jain, Raj - Department of Computer Science and Engineering, Washington University in St. Louis

Collection: Computer Technologies and Information Sciences

Summary:  FASTRAC DIGIPEATING ANNOUNCEMENT Dec 1, 2011 The FASTRAC satellites have been in operation for more... if the batteries fall below an specific charge level. Since the satellites have been power positive throughout... this whole year the only way this can happen is if the satellites transmit more often. Given that one

Source: Lightsey, Glenn - Department of Aerospace Engineering and Engineering Mechanics, University of Texas at Austin

Collection: Engineering

Summary:  for LEO Satellites Irfan Ali, Member, IEEE, Naofal Al­Dhahir, Member, IEEE, and John E. Hershey, Senior... when communicating through low earth orbit (LEO) satellites. This paper deals with the analytic... by a circular orbit LEO satellite. Two simplifications are performed to obtain the analytical expression

Source: Al-Dhahir, Naofal - Department of Electrical Engineering, University of Texas at Dallas

Collection: Engineering

Summary:  of Oslo, Department of Geosciences Topic: Study of glacier dust and debris via satellite and field... . Conclusions: Satellite techniques were developed to describe glacier surface dust and debris geochemical... . Satellite Earth observations can be used to monitor glaciers. Yet, to date, particulates on glacier surfaces

Source: Johansen, Tom Henning - Department of Physics, Universitetet i Oslo

Collection: Materials Science

Summary:  Welcome from the CIOSS Director The Cooperative Institute for Oceanographic Satellite Studies... at the NESDIS STAR Satellite Oceanography and Climatology Division (SOCD) to enhance and improve the use... of satellite remote sensing for oceanographic research, operational applications, and education

Source: Oregon State University, College of Oceanic and Atmospheric Sciences, Ocean Mixing Group

Collection: Geosciences

Summary:  Elisabeth FRAGNER: Prediction of satellite orbits with SLR (completed in May 1998... ) The modelling of artificial satellite orbits is nowadays often precondition for subsequent geodynamic... represent the real distances, the eccentricitiy on the ground and at the satellite

Source: Schuh, Harald - Institut für Geodäsie und Geophysik, Technische Universität Wien

Collection: Geosciences

Summary:  will be served. Nov 14th, 2008 Shan Mohiuddin "Orbit Determination for Satellite Formations and Constellations... of satellites cooperating in a cluster, or formation, and to estimate the absolute states of a large number... satellites operating in a global constellation. Although these are both orbit determination problems

Source: Kirby, Brian J. - Sibley School of Mechanical and Aerospace Engineering, Cornell University

Collection: Chemistry ; Engineering

Summary:  Poster Abstract: Satellite Based Wireless Sensor Networks ­ Global Scale Sensing with Nano... - and Pico-Satellites Walter Colitti Vrije Universiteit Brussel ETRO Dept. Pleinlaan 2, B-1050 Brussels... systems of small sensor-equipped satellites improve the cost efficiency and the missions' performance

Source: Dunkels, Adam - Computer Systems Laboratory, Swedish Institute of Computer Science (SICS)

Collection: Engineering ; Computer Technologies and Information Sciences

Summary:  BROADCASTING (TV CHANNELS 7-13) MOBILE FIXED MOBILE FIXED MOBILE SATELLITE FIXED MOBILE SATELLITE MOBILE FIXED... MOBILE SATELLITE MOBILE FIXEDMOBILE AERONAUTICALRADIONAVIGATION STD.FREQ.&TIMESIGNALSAT.(400.1MHz) MET... .SAT. (S-E) SPACERES. (S-E) EarthExpl. Satellite(E-S) MOBILESATELLITE(E-S) ...

Source: Rodriguez, Luis F. - Instituto de Astronomia, Universidad Nacional Autónoma de México

Collection: Physics

Summary:  Resource allocation and congestion control in next generation satellite networks Eytan Modiano... Massachusetts Institute of Technology In order to support high-rate data communication, future satellite... architectures for satellite and hybrid networks and algorithms for routing, congestion control and resource

Source: Modiano, Eytan - Laboratory for Information and Decision Systems & Department of Aeronautics and Astronautics, Massachusetts Institute of Technology (MIT)

Collection: Engineering ; Computer Technologies and Information Sciences

Summary:  Lloyd Wood, Cisco Systems IWSSC 2008 Tutorial Satellite Networks I: constellations orbital types... , uses and advantages International Workshop on Satellite and Space Communications 2008, IWSSC 2008, 1... project on satellite constellations with intersatellite links, at ENST Toulouse. · Did PhD on same

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  Predicting the Visibility of LEO Satellites I. Ali, N. Al­Dhahir and J.E. Hershey 1 P r e d i c t i... a simple algorithm to determine the visibility­time function of a circular low earth orbit (LEO) satellite... of the satellite during the visibility window is approximated by a great circle arc. Second, an analytic

Source: Al-Dhahir, Naofal - Department of Electrical Engineering, University of Texas at Dallas

Collection: Engineering

Summary:  T M E N T O F C O M M E R C E fact sheet | NOAA.gov (continued on next page) NOAA'S SATELLITE... AND INFORMATION SERVICE N OAA's Satellite and Information Service, or NESDIS, is the steward of national... for generations to come. NOAA satellites monitor a wide range of environmental factors. NOAA satellites ...

Source: NOAA Marine Fisheries Review

Collection: Environmental Sciences and Ecology

Summary:  N OAA's geostationary and polar-orbiting satellites provide critical data for short-term and long... understanding of the Earth. Our satellites also monitor environmental concerns, such as severe weather events... for Better Forecasts NOAA operates two types of satellites that provide real-time imagery daily

Source: NOAA Marine Fisheries Review

Collection: Environmental Sciences and Ecology

Summary:  Performance of End-to-End Mobility Management in Satellite IP Networks Pulak K Chowdhury, Mohammed... }@ou.edu William Ivancic Satellite Networks & Architectures Branch NASA Glenn Research Center, 21000 Brookpark Rd... (like satellites) will communicate with ground stations on Earth and among themselves to carry data

Source: Atiquzzaman, Mohammed - School of Computer Science, University of Oklahoma

Collection: Computer Technologies and Information Sciences

Summary:  Hybrid satellite/terrestrial networks: State of the art and future perspectives Nicolas Courville... role of satellite systems in hybrid satellite/terrestrial networks will be highlighted, as well... of communications and navigation of DLR and in the framework of the Satellite Communications Network of ...

Source: Papapetrou, Evaggelos - Department of Computer Science, University of Ioannina

Collection: Computer Technologies and Information Sciences

Summary:  , USA email: bellardo@calpoly.edu ABSTRACT Pico-satellites have recently gained substantial traction... radios used to communicate with earth have extremely slow data rates. A typical pico- satellite is within... . This paper presents a novel communication protocol that allows a sparse network of pico-satellites

Source: Bellardo, John - Computer Science Department, California Polytechnic State University

Collection: Computer Technologies and Information Sciences

Summary:  A networking perspective on satellite constellations Ecole d'Hiver des Télécommunications de Sophia... networking perspective on satellite constellations - Lloyd Wood 2 We aim to build up a picture of satellite... constellations and how we can simulate them as networks. To do that, we'll cover: · orbital geometry of ...

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  3Properties of the satellite population of a Milky Way galaxy in the CDM Universe Abstract We... to follow the evolution of a system resembling the Milky Way and its satellites. The semi-analytic model... the luminosity function of the satellites around the Milky Way by pre- venting cooling in haloes with Vvir < 16

Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of Marine Benthic Ecology and Evolution,

Collection: Biology and Medicine ; Environmental Sciences and Ecology

Summary:  Improving TCP performance in mobile satellite IP communications Modupe Omueti momueti... University Simon Fraser University #12;June 26, 2006 TMP 2006: Improving TCP performance in mobile satellite... IP communications 2 Roadmap Background mobile satellite communications transmission control protocol

Source: Trajkovic, Ljiljana - School of Engineering Science, Simon Fraser University

Collection: Computer Technologies and Information Sciences ; Engineering

Summary:  JOURNAL OF AEROSPACE COMPUTING, INFORMATION, AND COMMUNICATION Vol. 1, October 2004 395 Satellite... . Introduction OWADAYS we take the availability of worldwide communications for granted; communication satellites... possible. The potential of man-made satellites to provide global communication coverage was first

Source: Modiano, Eytan - Laboratory for Information and Decision Systems & Department of Aeronautics and Astronautics, Massachusetts Institute of Technology (MIT)

Collection: Engineering ; Computer Technologies and Information Sciences

Summary:  . ABSTRACT The GPS satellite constellation is dynamic. Earth gravita- tional forces cause orbits to vary... result in orbits that are not nominal. Even the number of satellites in the constellation can vary over... time given anticipated and actual satellite failures and routine maintenance. The GPS satellite

Source: Ayati, Bruce P. - Department of Mathematics, University of Iowa

Collection: Mathematics

Summary:  ANALYSIS OF HANDOVER CHARACTERISTICS IN SHADOWED LEO SATELLITE COMMUNICATION NETWORKS£ YOUNG HOON... In the near future low earth orbit (LEO) satellite communication networks will partially substitute for fixed... , ongoing calls may be dropped if satellite channels are shadowed. Therefore, in most LEO ...

Source: Sung, Dan Keun - Department of Electrical and Computer Science, Korea Advanced Institute of Science and Technology

Collection: Engineering

Summary:  High Performance Routing in a LEO Satellite Network Roy Kucukates Cem Ersoy Computer Networks... @boun.edu.tr Abstract Satellite systems are designed as a backup system to the existing land based wireless systems... there is no wired infrastructure of communication. Besides being more economic to the rural areas the satellite

Source: Bogaziçi University, Department of Computer Engineering, NETLAB

Collection: Computer Technologies and Information Sciences ; Engineering

Summary:  Handover Policies in LEO Systems with Satellite Diversity E. Papapetrou, S. Karapantazis, F... , 54124, Thessaloniki, Greece Email: skarap@auth.gr ABSTRACT In this paper satellite handover procedures... are proposed for investigating the satellite diversity (namely, the existing common coverage area between

Source: Papapetrou, Evaggelos - Department of Computer Science, University of Ioannina

Collection: Computer Technologies and Information Sciences

Summary:  encontraba el "nuevo varadero", o "varadero de Mindoro", que se mencionan en varias llegadas. Palapa

Source: National Oceanic and Atmospheric Administration (NOAA), National Climatic Data Center, Paleoclimatology Branch

Collection: Environmental Sciences and Ecology

Summary:  Parcours plan´etologie, M2 Bruno Sicardy Universit´e Pierre et Marie Curie Interaction disques-satellites... . Migration orbitale d'un satellite de Saturne. Sous l'effet des interactions gravitationnelles entre Prom... ´eth´ee, un petit satellite de Saturne, et l'anneau A de cette plan`ete, le satellite ...

Source: Sicardy, Bruno - Observatoire de Paris

Collection: Physics

Summary:  's environmental satellites recovered and delivered from the Wallops Com- mand and Data Acquisition Station (WCDAS... with the other site located in Fairbanks, Alaska. NOAA's environ- mental satellites provide data from space... for delivering this vital satellite data everyday since 1966. The Station acquires, maintains, and ...

Source: National Oceanic and Atmospheric Administration, Pacific Marine Environmental Laboratory, Atmopsheric Chemistry and Global Change Program

Collection: Geosciences ; Environmental Sciences and Ecology

Summary:  Internet and satellites Lloyd Wood Global Defense, Space and Security, Cisco Systems http... ? `Build it and they will come'. Mass manufacture of identical custom satellites not much cost saving... scheme (3/4 etc.)? modulation? polarisation, even? Where does coverage reach to? vs #12;Some satellite

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  parleranno:Ne parleranno:Ne parleranno:Ne parleranno: Osservare la Terra da satelliteOsservare la Terra da... satelliteOsservare la Terra da satelliteOsservare la Terra da satellite: Umberto Amato, Istituto per le... satellite -- il terremoto di maggio in Cina: Eugenio Sansosti, Istituto ...

Source: Pedicini, Marco - Istituto per le Applicazioni del Calcolo "M. Picone", Consiglio Nazionale delle Ricerche

Collection: Computer Technologies and Information Sciences ; Mathematics

Summary:  Acquisition Notice Posting Headquarters Acquisition Division FRANKLIN SMALL SATELLITE SUBSYSTEM... TECHNOLOGIES PROGRAM AND EDISON SMALL SATELLITE DEMONSTRATION MISSIONS PROGRAM General Information Solicitation... , NASA plans to begin two programs for small satellites. The primary goal of the Franklin Small ...

Source: Christian, Eric - Laboratory for High Energy Astrophysics, NASA Goddard Space Flight Center

Collection: Physics

Summary:  Abstract-The use of satellite aided navigation in the modern transport sector is well established... where of the world I.INTRODUCTION The Global Positioning System (GPS) is a satellite-based navigation... is a one- way-ranging system. That is, users can only receive the satellite signals[2]. II. OVERVIEW OF GPS

Source: Masoudi, Husain M. - Electrical Engineering Department, King Fahd University of Petroleum and Minerals

Collection: Engineering

Summary:  SATELLITE SYSTEMS PERFORMANCE WITH TCP-IP APPLICATIONS P. Loreti(1) , M. Luglio(1) , R. Kapoor (2... Abstract. Satellites are well suited for mobile Internet applications because of their capability... to enhance coverage and support long-range mobility. Satellites are an attractive alternative for providing

Source: Gerla, Mario - Computer Science Department, University of California at Los Angeles

Collection: Computer Technologies and Information Sciences

Summary:  Analysis of billing data from a hybrid satellite network Savio Lau saviol@cs.sfu.ca Communication... University #12;November 29, 2005 Analysis of billing data from a based hybrid satellite Internet service 2... 29, 2005 Analysis of billing data from a based hybrid satellite Internet service 3 ChinaSat hybrid

Source: Trajkovic, Ljiljana - School of Engineering Science, Simon Fraser University

Collection: Computer Technologies and Information Sciences ; Engineering

Summary:  as a secondary experimental payload onboard the UK-DMC (Disaster Monitoring Consortium) satellite built... and operated by Surrey Satellite Technology Ltd. (SSTL) of Guild- ford, England. The UK-DMC is part... of a "constellation" of five LEO satellites capable of providing large multispectral images of the Earth's environment

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  with the thesis "Using Kriging to Bound Satellite Ranging Errors due to the Ionosphere". He then joined... develops satellite navigation systems based on the Global Positioning System (GPS). He has been involved... constellations), the number of ranging sources (satellites) available for a positioning will significantly

Source: Stanford University - Global Positioning System (GPS) Lab.

Collection: Engineering

Summary:  A SURVEY FOR ``NORMAL'' IRREGULAR SATELLITES AROUND NEPTUNE: LIMITS TO COMPLETENESS1 Scott S... albedo of 0.04). We discovered one new outer satellite, Psamathe (S/2003 N1), about 20 km in radius... satellites that exhibited orbital signatures indicative of capture. Both of these, Triton and Nereid

Source: Jewitt, David C. - California at Los Angeles, University of , Department of Earth & Space Sciences and Institute of Geophysics and Planetary Physics; Sheppard, Scott S. - Department of Terrestrial Magnetism, Carnegie Institution for Science

Collection: Geosciences ; Physics

Summary:  13 Chapter 2 SATELLITE CONSTELLATION NETWORKS The path from orbital geometry through network... for Communication Systems Research, University of Surrey; software engineer, Cisco Systems Ltd. Abstract: Satellite... effects of path delay and handover on network traffic are described. The design of the resulting satellite

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  Information Satellite borne Airborne Ground Ship borne Spatial Information Processing National Basic... ) SEABATREALCYRAXALSAISAADS40TABIUCDTSX REAL PS-Cruiser TerraSAR-X and other satellites #12;© PASCO CORPORATION 1953... Space Business (Satellite): -90 % of Japanese Space Equipment programs are founded by Japanese

Source: Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Plasma

Collection: Plasma Physics and Fusion

Summary:  . Anton Ivanov Dr. Alireza Karimi Stefano Gerussi Cheops Mission The CHEOPS (CH ExOPlanet Satellite... ) mission s goal is to develop and build a small satellite which is able to observe exoplanet transits... as the exoplanet passes in front of the sun the satellite s telescope measures an intensity drop of the incoming

Source: Lausanne, Ecole Polytechnique Fédérale de - Processor Architecture Laboratory

Collection: Engineering ; Computer Technologies and Information Sciences

Summary:  router is orbiting onboard the UK-DMC satellite as a secondary experimental payload, and has been tested... successfully. Testing a router onboard a satellite is one step towards extending the terrestrial networking... describe the integration of the router and satellite and on- orbit testing, and suggest possible future

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  1 Analysis and Simulation of Delay and Buffer Requirements of Satellite- ATM Networks for TCP... performance of a satellite-ATM network. We describe a satellite-ATM network architecture. The architecture... presents a trade-off between the on-board switching/processing features and the complexity of the ...

Source: Jain, Raj - Department of Computer Science and Engineering, Washington University in St. Louis

Collection: Computer Technologies and Information Sciences

Summary:  Scheme for Broadband Low Earth Orbit Satellite Networks Özgür Erçetin+ , Srikanth Krishnamurthy$ , Son... of Maryland, College Park, MD 20742. Abstract Low Earth Orbit Satellite Networks can augment terrestrial... . Delivering QoS guarantees to the users of LEO satellite networks is complicated since footprints of LEO

Source: Krishnamurthy, Srikanth - Department of Computer Science and Engineering, University of California at Riverside

Collection: Computer Technologies and Information Sciences

Summary:  5) (Zumberge et al. 1997), free-network satellite orbits and satellite clock offsets obtained from

Source: DeMets, Chuck - Department of Geology and Geophysics, University of Wisconsin at Madison

Collection: Geosciences

Summary:  ABSTRACT Images from the GOES 8 satellite were used along with auxiliary information such as snow... through 2002[1]. Both global and beam irradiance values were derived from the satellite images and diffuse... from the satellite images. This article presents new and independent tests of this satellite ...

Source: Oregon, University of - Solar Radiation Monitoring Laboratory

Collection: Renewable Energy

Summary:  . + Surrey Satellite Technology Ltd, University of Surrey, Guildford. IAC-03-U.4.07 Corresponding authors: l... t Operators of traditional geostationary satellites are allocated well-defined orbital slots... for their satellites. By breaking the uplink/downlink dependency, adapting onboard processing in the transponders

Source: Wood, Lloyd - Cisco Systems

Collection: Engineering ; Physics

Summary:  BABA h-baba@soumu.go.jp Space Communications Policy in Japan #12;Communication Satellite Technologies... Development (1990-2010) Communication satellite technologiessatellite, payload, ground system have been... developed. High-speed satellite-fixed communications for a small aperture terminal Satellite ...

Source: Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Plasma

Collection: Plasma Physics and Fusion

Summary:  ) The motions of artificial satellites are influenced by gravitational and nongravitational... 's gravitational field. Orbits of geostationary satellites are extremely sensitive to perturbations caused... of the above mentioned terms by< means of observing geostationary satellites over a period of only a few

Source: Schuh, Harald - Institut für Geodäsie und Geophysik, Technische Universität Wien

Collection: Geosciences

Summary:  EAS 4460: Satellite and Radar Meteorology Texts: Radar for Meteorologists ( Reinhart) Satellite... Meteorology: An Introduction (Kidder and Vonder Haar) Syllabus Introduction (0.5 week) History of satellite... Orbit perturbations Meteorological satellite orbits Satellite positioning, ...

Source: Black, Robert X. - School of Earth and Atmospheric Sciences, Georgia Institute of Technology

Collection: Geosciences ; Environmental Sciences and Ecology

Summary:  Fourth Symposium on Future National Operational Environmental Satellites 5.2 Satellite-Derived Land... ) of the National Centers for Environmental Prediction (NCEP) of a wide suite of large-scale satellite-derived land... and Regional Weather and Climate Prediction Models. Such satellite-derived large-scale ...

Source: Houser, Paul R. - Center for Research on Environment and Water, George Mason University

Collection: Geosciences

Summary:  The SMILE Program Summer Teachers' Workshop, 2005 Seeing Sat te Dataelli Seeing Satellite Data... Overview: Satellites are useful for collecting large amounts of data all at approximately the same time... . Satellites have sensors on them that detect Electro-magnetic energy like our eyes do, but satellite ...

Source: Dever, Edward P. - College of Oceanic and Atmospheric Sciences, Oregon State University

Collection: Geosciences