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Download IEEE Standard Definitions of Terms for Radio Wave by IEEE PDF

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Summary: phrases and definitions utilized in the context of electromagnetic wave propagation on the subject of the fields of telecommunications, distant sensing, radio astronomy, optical waves, plasma waves, the ionosphere, the magnetosphere, and magnetohydrodynamic, acoustic, and electrostatic waves are provided.

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IEEE Standard Definitions of Terms for Radio Wave Propagation

Summary: phrases and definitions utilized in the context of electromagnetic wave propagation on the subject of the fields of telecommunications, distant sensing, radio astronomy, optical waves, plasma waves, the ionosphere, the magnetosphere, and magnetohydrodynamic, acoustic, and electrostatic waves are provided.

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Transmissivity: (A) (of a boundary). The ratio of the normal component of the power density transmitted across the boundary between two media to the normal component of the incident power density. (B) (of a layer). The ratio of the normal component of the power density transmitted through the layer to the normal component of the incident power density. transmissivity matrix: A 4 ´ 4 matrix of dimensionless real numbers which, when multiplied by the Stokes vector incident upon a boundary or through a medium, yields the Stokes vector that is propagated across that boundary or medium.

Radar backscattering cross-section: Radar scattering cross-section as determined for coincident transmitter and receiver locations. See also: scattering cross-section. radar cross-section (RCS): See: scattering cross-section. radar reßectivity: A measure of backscattering from an inhomogeneous medium, deÞned as radar cross section (RCS) per unit volume. Frequently used in radar measurements of meteorological phenomena. radian frequency: See: angular frequency. radiation condition: A condition implying that at large distances from a source, only outgoing waves can exist.

Scattering matrix: A 2 ´ 2 complex matrix which characterizes the polarized Þeld scattered by a given object. scattering pattern: See: scattering phase function. scattering phase function: The angular spectrum of a scatterer when illuminated by a plane wave. Synonym: scattering pattern. scintillation: The phenomenon of ßuctuation of the amplitude of a wave caused by irregular changes in the transmission path or paths with time. Note: The term scintillation is sometimes used to describe ßuctuations of phase and angle of arrival.

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