polar transmission

polar transmission
полярная [биполярная] передача

Большой англо-русский и русско-английский словарь. 2001.

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  • polar transmission —    A method of transmitting teletypewriter signals, whereby the marking signal is represented by direct current flowing in one direction and the spacing signal is represented by an equal current flowing in the opposite direction. In tone… …   IT glossary of terms, acronyms and abbreviations

  • Polar modulation — is analogous to quadrature modulation in the same way that polar coordinates are analogous to Cartesian coordinates. Quadrature modulation makes use of Cartesian coordinates, x and y . When considering quadrature modulation, the x axis is called… …   Wikipedia

  • Mars Polar Lander — Artist depiction of Mars Polar Lander on Mars. Operator NASA / JPL Major contractors Martin Marietta …   Wikipedia

  • Automatic Picture Transmission — The Automatic Picture Transmission (APT) system is an analog image transmission system developed for use on weather satellites. It was introduced in the 1960s and over four decades has provided image data to relatively low cost user stations at… …   Wikipedia

  • Low Rate Picture Transmission — The Low Rate Picture Transmission (LRPT) is a digital transmission system, intended to deliver images and data from an orbital weather satellite directly to end users via a VHF radio signal. It is used aboard polar orbiting, near Earth weather… …   Wikipedia

  • Polarential telegraph system — A polarential telegraph system is a direct current telegraph system employing polar transmission in one direction and a form of differential duplex transmission in the other. [cite book|title=IEEE Standard Dictionary of Electrical and Electronics …   Wikipedia

  • Smith chart — The Smith Chart, invented by Phillip H. Smith (1905 1987), [Smith, P. H.; Transmission Line Calculator; Electronics, Vol. 12, No. 1, pp 29 31, January 1939] [Smith, P. H.; An Improved Transmission Line Calculator; Electronics, Vol. 17, No. 1, p… …   Wikipedia

  • Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

  • Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

  • Null (physics) — In physics a null is a point in a field where the field quantity is zero as the result of two or more opposing quantities completely cancelling each other. The field may be scalar, vector or tensor in nature. Common situations where nulls arise… …   Wikipedia

  • Scattering parameters — or S parameters are properties used in electrical engineering, electronics engineering, and communication systems engineering describing the electrical behavior of linear electrical networks when undergoing various steady state stimuli by small… …   Wikipedia


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