2,654 resources related to Observatories
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To promote awareness, understanding, advancement and application of ocean engineering and marine technology. This includes all aspects of science, engineering, and technology that address research, development, and operations pertaining to all bodies of water. This includes the creation of new capabilities and technologies from concept design through prototypes, testing, and operational systems to sense, explore, understand, develop, use, and responsibly manage natural resources.
OCEANS 2020 - SINGAPORE
An OCEANS conference is a major forum for scientists, engineers, and end-users throughout the world to present and discuss the latest research results, ideas, developments, and applications in all areas of oceanic science and engineering. Each conference has a specific theme chosen by the conference technical program committee. All papers presented at the conference are subsequently archived in the IEEE Xplore online database. The OCEANS conference comprises a scientific program with oral and poster presentations, and a state of the art exhibition in the field of ocean engineering and marine technology. In addition, each conference can have tutorials, workshops, panel discussions, technical tours, awards ceremonies, receptions, and other professional and social activities.
All areas of ionizing radiation detection - detectors, signal processing, analysis of results, PET development, PET results, medical imaging using ionizing radiation
The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.
All fields of satellite, airborne and ground remote sensing.
The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.
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.
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.
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
Broadcast technology, including devices, equipment, techniques, and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.
IEEE Transactions on Microwave Theory and Techniques, 1997
Space Weather, 2013
To calculate the probability of extreme magnetic storms in the solar cycle 24, cumulative distribution functions are investigated using an 89 year list of magnetic storms recorded at Kakioka Magnetic Observatory. It is found that the probability of occurrence of extreme magnetic storms can be modeled as a function of maximum sunspot number of a solar cycle, and the probability ...
IEEE Spectrum, 1989
A description is given of some advanced spacecraft control applications. The Gamma Ray Observatory (GRO) has decision-making software that gives each of its instruments some discretion as to what it observes, as well as a local area network over which one instrument can alert the rest to a special event. The Hubble Space Telescope, a joint project of NASA and ...
Radio Science, 2010
No abstract is available.
IEEE Antennas and Propagation Magazine, 2013
A reference was omitted from the Letter to the Editor by Tomasz Dlugosz, "A Puzzle: How to Prove the Pythagorean Theorem in Antenna Analysis?," IEEE Antennas and Propagation Magazine, 55, 3, June 2013, pp. 190-191. It should have been cited at the end of the first sentence in the letter, and appeared in a list of references as follows: 1. ...
To calculate the probability of extreme magnetic storms in the solar cycle 24, cumulative distribution functions are investigated using an 89 year list of magnetic storms recorded at Kakioka Magnetic Observatory. It is found that the probability of occurrence of extreme magnetic storms can be modeled as a function of maximum sunspot number of a solar cycle, and the probability of another Carrington storm occurring within the next decade is estimated to be 4–6%.
A description is given of some advanced spacecraft control applications. The Gamma Ray Observatory (GRO) has decision-making software that gives each of its instruments some discretion as to what it observes, as well as a local area network over which one instrument can alert the rest to a special event. The Hubble Space Telescope, a joint project of NASA and the European Space Agency, relies on artificial intelligence in ground-based software to schedule when it is to view some object, while onboard control systems let it find and track targets with a precision finer than systems on earth. In the probe the Galileo spacecraft will release into Jupiter's atmosphere, the electronics are engineered to survive forces up to 350 times the Earth's gravity and heat as great as on the Sun's surface.<<ETX>>
No abstract is available.
A reference was omitted from the Letter to the Editor by Tomasz Dlugosz, "A Puzzle: How to Prove the Pythagorean Theorem in Antenna Analysis?," IEEE Antennas and Propagation Magazine, 55, 3, June 2013, pp. 190-191. It should have been cited at the end of the first sentence in the letter, and appeared in a list of references as follows: 1. Hubert Trzaska, Electromagnetic Field Measurements in the Near Field, Noble Publishers, 2001.
We present 29 movie-maps of low-latitude horizontal-intensity magnetic disturbance for the years 1999–2006: 28 recording magnetic storms and 1 magnetically quiescent period. The movie-maps are derived from magnetic vector time series data collected at up to 25 ground-based observatories. Using a technique similar to that used in the calculation of Dst, a quiet time baseline is subtracted from the time series from each observatory. The remaining disturbance time series are shown in a polar coordinate system that accommodates both Earth rotation and the universal time dependence of magnetospheric disturbance. Each magnetic storm recorded in the movie-maps is different. While some standard interpretations about the storm time equatorial ring current appear to apply to certain moments and certain phases of some storms, the movie-maps also show substantial variety in the local time distribution of low-latitude magnetic disturbance, especially during storm commencements and storm main phases. All movie-maps are available at the U.S. Geological Survey Geomagnetism Program Web site (http://geomag.usgs.gov).
The application of genetic algorithm is discussed in the problem of minimum- fuel consumption orbit manoeuvre of spacecraft. First, the method of operation is introduced. Two examples are then given: one is soft-landing of a lunar probe from lunar satellite orbit to lunar surface; and the other is orbit manoeuvre of lunar probe from a selenocentric hyperbolic orbit to a selenocentric circular orbit. It is shown that the genetic algorithm has good convergence property and high accuracy.
The authors have investigated the second order scattering theory for HF scattering by the sea surface. Second order scattering is caused primary by forced waves which satisfy the Bragg condition. When ocean waves develop the theory seems to be invalid; the authors realized it was valid from observational data. The authors have also estimated wave parameters. Wave height and period can be estimated, but it is difficult to estimate wave direction.<<ETX>>
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