Conferences related to Orbits

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2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting

The joint meeting is intended to provide an international forum for the exchange of information on state of the art research in the area of antennas and propagation, electromagnetic engineering and radio science


2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)

Technical presentations will range from the fundamental physics of electron emission and modulated electron beams to the design and operation of devices at UHF to THz frequencies, theory and computational tool development, active and passive components, systems, and supporting technologies.System developers will find that IVEC provides a unique snapshot of the current state-of-the-art in vacuum electron devices. These devices continue to provide unmatched power and performance for advanced electromagnetic systems, particularly in the challenging frequency regimes of millimeter-wave and THz electronics.Plenary talks will provide insights into the history, the broad spectrum of fundamental physics, the scientific issues, and the technological applications driving the current directions in vacuum electronics research.


2020 IEEE Applied Power Electronics Conference and Exposition (APEC)

APEC focuses on the practical and applied aspects of the power electronics business. Not just a power designer’s conference, APEC has something of interest for anyone involved in power electronics including:- Equipment OEMs that use power supplies and converters in their equipment- Designers of power supplies, dc-dc converters, motor drives, uninterruptable power supplies, inverters and any other power electronic circuits, equipments and systems- Manufacturers and suppliers of components and assemblies used in power electronics- Manufacturing, quality and test engineers involved with power electronics equipment- Marketing, sales and anyone involved in the business of power electronic- Compliance engineers testing and qualifying power electronics equipment or equipment that uses power electronics


2020 IEEE International Conference on Robotics and Automation (ICRA)

The International Conference on Robotics and Automation (ICRA) is the IEEE Robotics and Automation Society’s biggest conference and one of the leading international forums for robotics researchers to present their work.


2020 IEEE International Conference on Systems, Man, and Cybernetics (SMC)

The 2020 IEEE International Conference on Systems, Man, and Cybernetics (SMC 2020) will be held in Metro Toronto Convention Centre (MTCC), Toronto, Ontario, Canada. SMC 2020 is the flagship conference of the IEEE Systems, Man, and Cybernetics Society. It provides an international forum for researchers and practitioners to report most recent innovations and developments, summarize state-of-the-art, and exchange ideas and advances in all aspects of systems science and engineering, human machine systems, and cybernetics. Advances in these fields have increasing importance in the creation of intelligent environments involving technologies interacting with humans to provide an enriching experience and thereby improve quality of life. Papers related to the conference theme are solicited, including theories, methodologies, and emerging applications. Contributions to theory and practice, including but not limited to the following technical areas, are invited.


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Periodicals related to Orbits

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Aerospace and Electronic Systems Magazine, IEEE

The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.


Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Antennas and Wireless Propagation Letters, IEEE

IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Automatic Control, IEEE Transactions on

The theory, design and application of Control Systems. It shall encompass components, and the integration of these components, as are necessary for the construction of such systems. The word `systems' as used herein shall be interpreted to include physical, biological, organizational and other entities and combinations thereof, which can be represented through a mathematical symbolism. The Field of Interest: shall ...


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Most published Xplore authors for Orbits

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Xplore Articles related to Orbits

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Deployable Mesh Reflector Antennas for Space Applications: RF Characterizations

Space Antenna Handbook, None

None


Additions and Corrections: "Collision between Satellites in Stationary Orbits"

IEEE Transactions on Aerospace and Electronic Systems, 1981

None


A framework for next-generation radiation belt models

Space Weather, 2005

The trapped radiation specifications, such as AE-8 and AP-8, are based upon a simple and reasonable framework that happens to be insufficient to the modern demands placed upon them. This manuscript outlines an improved framework for the next generation of radiation models. While existing radiation specifications tend to provide mean fluxes on a grid in magnetic coordinates, scientific and engineering ...


The dynamics of semigroups of transcendental meromorphic functions

Tsinghua Science and Technology, 2004

This paper considers the dynamics associated with an arbitrary semigroup of transcendental meromorphic functions. Fatou-Julia theory was used to investigate the dynamics of these semigroups. Some results of the dynamics of a rational mapping on the Riemann sphere were extended to the case.


Operational models and drag-derived density trends in the thermosphere

Space Weather, 2011

Improvements in knowledge of satellite drag coefficients confirm current reports of a long-term decline in thermospheric density. Operational thermospheric models, though highly sophisticated, did not predict the extent of the decline, posing a problem for orbit control and maintenance. Evidence is presented that current models could not predict the magnitude of the decline for two reasons: (1) they do not ...


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Educational Resources on Orbits

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IEEE-USA E-Books

  • Deployable Mesh Reflector Antennas for Space Applications: RF Characterizations

    None

  • Additions and Corrections: "Collision between Satellites in Stationary Orbits"

    None

  • A framework for next-generation radiation belt models

    The trapped radiation specifications, such as AE-8 and AP-8, are based upon a simple and reasonable framework that happens to be insufficient to the modern demands placed upon them. This manuscript outlines an improved framework for the next generation of radiation models. While existing radiation specifications tend to provide mean fluxes on a grid in magnetic coordinates, scientific and engineering users are starting to demand capabilities that are far beyond this simple framework, such as error bars on total mission dose and real-time data assimilation. One framework that can provide these added capabilities while still remaining fairly simple is the joint probability distribution, described here. The joint distribution can describe the behavior of individual fluxes on a grid in magnetic coordinates while also describing how those fluxes vary together. This covariance is a crucial ingredient for data assimilation and for proper error bars and percentiles on composite quantities like dose or fluence to a shielded device. This manuscript describes the core math of the proposed framework, an approach to building the model from in situ observations and/or numerical simulations, how to use the model to calculate error bars and percentiles on composite quantities, how to use the model in data assimilation, and how to make a first estimate of the dependence of worst case fluences on aggregation time.

  • The dynamics of semigroups of transcendental meromorphic functions

    This paper considers the dynamics associated with an arbitrary semigroup of transcendental meromorphic functions. Fatou-Julia theory was used to investigate the dynamics of these semigroups. Some results of the dynamics of a rational mapping on the Riemann sphere were extended to the case.

  • Operational models and drag-derived density trends in the thermosphere

    Improvements in knowledge of satellite drag coefficients confirm current reports of a long-term decline in thermospheric density. Operational thermospheric models, though highly sophisticated, did not predict the extent of the decline, posing a problem for orbit control and maintenance. Evidence is presented that current models could not predict the magnitude of the decline for two reasons: (1) they do not realistically describe the highly variable energy entering the thermosphere from the solar wind at all times, especially at geomagnetically quiet times, and (2) they overestimate the less volatile ultraviolet contribution by ignoring eddy diffusion which transfers energy from the thermosphere to the mesosphere. The historical background of operational thermospheric models and suggestions for improvement are provided.

  • Propulsion challenges for small spacecraft: 2005

    Small (<100 kg) spacecrafts are being developed in many countries but their propulsion systems still have many challenges. Although there is demand for small spacecraft propulsion, the number of missions at present is small due to several commercial and technical reasons. Poor performance of existing small spacecraft propulsion systems is one of the main reasons for the small number of missions. Several reasons are given for the poor performance of existing small spacecraft propulsion. Suggested improvements focus on small spacecraft and propulsion hardware mass optimization rather than on specific impulse enhancement. Propellantless propulsion systems are also recommended for small spacecraft interplanetary missions.

  • Microwave Gain Mechanisms in the Relativistic Magnetron

    None

  • TIMELINE

    None

  • Lyapunov-Floquet control of satellite relative motion in elliptic orbits

    This paper proposes a method for continuous-thrust control of satellite formations in elliptic orbits. A previously calculated Lyapunov-Floquet transformation relates the linearized equations of relative motion for elliptic chief orbits to the Hill-Clohessy-Wiltshire equations describing circular chiefs. Using a control law based on Lyapunov-Floquet theory, a time- varying feedback gain is computed that drives a deputy satellite toward rendezvous with an elliptic chief. This control law stabilizes the relative motion across a wide range of chief eccentricities.

  • Active Thermomechanical Stress Cancellation of Solder Joints in SMD Integrated Circuits

    One of the main difficulties that prevent the use of integrated circuits (IC) with BGA packages in space is the early fatigue of their solder joints. Early solder fatigue originates in the thermomechanical stress cycles produced by the different coefficients of thermal expansion (CTE) of the printed circuit board (PCB) and the IC package and the temperature fluctuations that they suffer during a space mission. In this work we propose an active cancellation mechanism to extend the lifetime of the solder joints with minimum energy consumption and show the simulation results from its modeling.



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