radar scan pattern

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• radar scan — The path or pattern described by the motion of a radar beam as it searches for a target. See helical scan and conical scan …   Aviation dictionary

• Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …   Wikipedia

• scan period — The period taken by a radar, sonar, etc., to complete a scan pattern and return to a starting point …   Military dictionary

• scan period — The period taken by a radar to complete a scan pattern and return to a starting point …   Aviation dictionary

• Scan — may refer to: *Scan, the act of examining sequentially, part by part *Image scanning, in data processing, the act of optically analyzing a two or three dimensional image and digitally encode it (digitize it) for storage in a computer file *Scan,… …   Wikipedia

• circular scan — A radar scan pattern in which a given point on the directed beam describes a circle in space with antennae at the center. This scan pattern is used in search radars and is distinguished by the regular intervals between successive illuminations of …   Aviation dictionary

• scan — [skan] vt. scanned, scanning [ME scannen < L scandere, to climb, mount (in LL, to scan): see DESCEND] 1. to analyze (verse) in terms of its rhythmic components, as by counting accents and syllables and marking the metrical feet 2. to look at… …   English World dictionary

• spiral scan — A radar scan pattern in which the beam is rotated out from and back to the centerline in a circular motion in the vertical plane. This pattern is applicable to target acquisition radars, providing range, relative azimuth, and elevation data …   Aviation dictionary

• radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… …   Universalium

• scan — I UK [skæn] / US verb Word forms scan : present tense I/you/we/they scan he/she/it scans present participle scanning past tense scanned past participle scanned ** 1) [transitive] to look at something very carefully, because you hope or expect to… …   English dictionary

• scan — scan1 [ skæn ] verb ** ▸ 1 look carefully ▸ 2 read quickly ▸ 3 copy with equipment ▸ 4 photograph inside of something ▸ 5 about poetry 1. ) transitive to look at something very carefully, because you hope or expect to see a particular person or… …   Usage of the words and phrases in modern English