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Books > Professional & Technical > Electronics & communications engineering > Communications engineering / telecommunications > Radar
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Very Long Baseline Interferometry - Techniques and Applications (Hardcover, 1989 ed.)
Loot Price: R9,779
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Very Long Baseline Interferometry - Techniques and Applications (Hardcover, 1989 ed.)
Series: NATO Science Series C, 283
Expected to ship within 10 - 15 working days
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The quest for high resolution has preoccupied radio astronomers
ever since radio waves were first detected from space fifty years
ago. This venture was par ticularly stimulated by the discovery of
quasars, and led to the development of interferometer techniques
using baselines of transglobal dimensions. These meth ods have
become known as Very Long Baseline Interferometry (VLBI). Arrays of
radio telescopes situated all over the Earth (or even in space) are
regularly used for researches in radio astronomy, reaching
resolutions as small as a fraction of a milli arcsecond. The
technique also allows the measurement of the positions of the radio
telescopes to a few millimeters and so VLBI has become a major tool
in geodesy and the study of the rotation of the Earth. VLBI has now
passed the pioneer stage and is becoming a standard facility
available to astronomers and geodesists, requiring the coordination
of the operations of indpendently owned radio telescopes around the
world. In Europe observatories from England, Federal Republic of
Germany, France, Italy, Poland, Sweden and The Netherlands are
coordinated in their VLBI activity by the European VLBI Network
Consortium (EVN). The Programme Committee of the EVN allocates time
to scientific projects on a routine basis three times a year. The
Unites States has a similar arrangement of a network of independent
radio observatories, and joint experiments using 'Global Network'
are often made."
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