directional signal.
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directional signal. — See turn signal … Useful english dictionary
Directional symmetry — is roughly defined as things going the same direction, and is to be distinguished from directional asymmetry, meaning things going different directions. The following formula tests for directional symmetry: If is the actual signal and is the… … Wikipedia
Directional Infrared Counter Measures — (DIRCM) is a system produced by Elbit Systems, Northrop Grumman, ITT Corporation and BAE Systems to protect aircraft from infrared homing ( heat seeking ) man portable missiles. It is a lightweight, compact system designed to provide mission… … Wikipedia
Directional boring — A small directional boring unit in action Directional boring, commonly called horizontal directional drilling or HDD, is a steerable trenchless method of installing underground pipes, conduits and cables in a shallow arc along a prescribed bore… … Wikipedia
Directional sound — See sound from ultrasound for a beam of ultrasound that makes audible sound in a restricted target area without a receiving set. Directional Sound refers to the notion of using various devices to create fields of sound which spread less than most … Wikipedia
Directional Sound — See sound from ultrasound for a beam of ultrasound that makes audible sound in a restricted target area without a receiving set. Directional Sound refers to the notion of using various devices to create fields of sound which spread less than most … Wikipedia
Directional antenna — Log periodic dipole array A directional antenna or beam antenna is an antenna which radiates greater power in one or more directions allowing for increased performance on transmit and receive and reduced interference from unwanted sources.… … Wikipedia
Directional array — In broadcast engineering, directional array refers to an antenna array arranged such that the superposition of the electromagnetic waves produce a predictable electromagnetic field. By spacing 2 or more antenna elements apart, changing the length … Wikipedia
Signal strength — In telecommunications, particularly in radio, signal strength refers to the magnitude of the electric field at a reference point that is a significant distance from the transmitting antenna. It may also be referred to as received signal level or… … Wikipedia
directional — di•rec•tion•al [[t]dɪˈrɛk ʃə nl, daɪ [/t]] adj. 1) of, pertaining to, or indicating direction 2) rtv adapted for determining the direction of signals received, or for transmitting signals in a given direction: a directional antenna[/ex] 3) of,… … From formal English to slang
