# azimuth

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## azimuth

(ăz`əməth), in astronomy, one coordinate in the altazimuth coordinate systemaltazimuth coordinate system
or horizon coordinate system,
astronomical coordinate system in which the position of a body on the celestial sphere is described relative to an observer's celestial horizon and zenith.
. It is the angular distance of a body measured westward along the celestial horizon from the observer's south point.

## azimuth

(az -ă-mŭth) See horizontal coordinate system.

## Azimuth

(religion, spiritualism, and occult)

One can locate a specific celestial object in several ways, most of which involve specifying two coordinates. The azimuth is one of the coordinates of such a system. Although the notion of azimuth is basically simple, it is not simple to explain. Imagine that a group of people are looking at a star. From where they are standing, they can measure the angle between the horizon and the star. This gives them one coordinate in terms of angular distance (called the altitude, for obvious reasons). Then imagine a geometric plane that, like some kind of gigantic wall, cuts through Earth, intersecting the north and south poles, the place where they are standing, and the point directly over their heads (the zenith). They then measure another angle with their surveying instrument, this time between the imaginary wall and the star. This angular distance gives them the azimuth.

### Sources:

Filbey, John, and Peter Filbey. The Astrologer’s Companion. Wellingborough, Northamptonshire, UK: Aquarian Press, 1986.
Gettings, Fred. Dictionary of Astrology. London: Routledge & Kegan Paul, 1985.

## azimuth

[′az·ə·məth]
(astronomy)
Horizontal direction of a celestial point from a terrestrial point, expressed as the angular distance from a reference direction, usually measured from 0° at the reference direction clockwise through 360°.
(engineering)
In directional drilling, the direction of the face of the deviation tool with respect to magnetic north.
(geodesy)
Horizontal direction on the earth's surface.

## azimuth

azimuth
In plane surveying, a horizontal angle measured clockwise from north meridian to the direction of an object or fixed point.

## azimuth

i. A direction expressed as a horizontal angle, usually in degrees, measured clock-wise from a reference datum or direction, usually north. The azimuth will be a true zenith, grid azimuth, magnetic azimuth, or relative azimuth, depending upon which reference datum is used.
ii. The arc of the observer's rational horizon or the angle at his zenith contained between the observer's celestial meridian and the vertical circle through that body. It is the distance, measured in degrees, along the horizon westward from the south point of the horizon to the place where the vertical circle through an object intersects the horizon.
iii. As it pertains to aerial photography, the azimuth of a photograph is the clock-wise horizontal angle measured about the ground nadir point from the ground survey north meridian to the principal plane of the photograph. Also called azimuth of the principal plane.

## azimuth

Astronomy navigation the angular distance usually measured clockwise from the north point of the horizon to the intersection with the horizon of the vertical circle passing through a celestial body

## azimuth

The trajectory of an angle measured in degrees going clockwise from a base point. A disk azimuth alignment test checks for the correct positioning of the read/write head to the track.
References in periodicals archive ?
Fig 3 shows that the change in received PPD is almost constant if seen with respect to the azimuth and elevation angles assuming angle a to be less than amax.
Considering (6) and (7), the azimuth impulse response of receiver j for a point-like target can be described by (8) [23].
2, the Doppler bandwidth needed for MEOSAR can be less than LEOSAR for a given azimuth resolution.
To overcome primary disadvantages in ScanSAR, progressive azimuth beam scanning is introduced to shrink the AAP, and each target will be illuminated by the completed and reduced AAP.
where [eta] denotes the azimuth slow time, [lambda] the centre wavelength, and [DELTA]r([eta], r) the motion error to the slant range r.
The mobile communication antenna is on the same plane as floor 6 and, in addition, the antenna's azimuth coincides with floor 6 and therefore the EMF power density values are the highest in the direction of the most intensive radiation.
Problem is, some crewmen are forgetting this extra step for the azimuth knob.
RTM 3D gathers contain full-azimuth information such as subsurface reflection angle and azimuth angle.
The angle of the azimuth axis is measured over a diameter of about 15 meters, which requires a scale tape with a length of 48.
The azimuth interval between profiles was 10 degrees.
TELECOMWORLDWIRE-25 April 2007-Samsung Electronics selects ACE 400WB from Azimuth Systems for Mobile WiMAX testing(C)1994-2007 M2 COMMUNICATIONS LTD http://www.

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