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Definitions (256)
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carrier phase
or carrier phase measurement; ideally, the number of cycles of the carrier frequency of a specific GNSS signal between the phase center of the GNSS SV and the phase center of the user's antenna, [..]
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ecef
"Earth-centered, Earth-fixed"
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4-character id
four printable ASCII characters (usually case-insensitive alphanumeric plus underscore) which traditionally have been used to designate a monument or site, so with a-z, 0-9, and _ (underscore) there [..]
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als
"Airborne Laser Scanning"; a lidar system installed in an aircraft that scans ground targets in a swath beneath the airborne aircraft; see National Center for Airborne Laser Mapping - NCA [..]
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anet
"Antarctic NETwork"; network of GNSS stations in or near Antarctica; see also POLENET
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antenna
(for the GNSS community:) a resonant device that detects the GHz GNSS (GPS, GLONASS, Beidou/Compass, Galileo, QZSS, or SBAS) microwave signals and converts them to electrical signals for pro [..]
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antenna cable
a 50-ohm impedence, RF-shielded, co-axial cable used to connect the antenna to the receiver
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antenna dome or antenna radome
a thin, almost microwave-transparent material placed over a GNSS antenna, often in the shape (or nearly so) of a simple geometrical surface (e.g. hemisphere, cone, paraboloid, etc.); use of an ante [..]
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antenna height
vertical distance from the survey point of a monument to the antenna reference point (ARP) of the antenna; this may be calculated using the geometry of the antenna and the antenna slant height
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antenna orientation
the antenna is usually rotated into a standard orientation, often so that the antenna cable connector is toward geographic north, though often in the field only the local magnetic north direction i [..]
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