Attenuation: The decrease in the strength of a radar wave resulting from absorption, scattering, and reflection by the medium through which it passes (waveguide, atmosphere) and by obstructions in its path. Also attenuation of the wave may be the result of artificial means, such as the inclusion of an attenuator in the circuitry or by placing an absorbing device in the path of the wave.

 

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Attenuation: The loss of signal energy due to absorption, reflection, or diffusion during transmission.

Foliage Attenuation: Reductions in signal strength or quality due to signal absorption by trees or foliage obstructions in the signal's line-of-sight path. For example, 800 MHz systems are seldom deployed in for . . . View Full Definition

Sound Attenuation: Sound proofing a wall or subfloor, generally with fiberglass insulation.

Attenuation (Of Light): Diminution of light intensity; explained, in the ocean, in terms of absorption and scattering