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Trilateration

GIS TriangulationTropic of Cancer

Trilateration is a method for determining the intersections of three sphere surfaces given the centers and radii of the three spheres.

 


trilateration
See Also: triangulation
[surveying] Determining the position of a point on the earth's surface with respect to two other points by measuring the distances between all three points.

Trilateration. The second method of determining the relative positions of moving objects (for example, a user with a portable RFID reader) uses the known location of two or more stationary objects or tags, ...

Trilateration
In the 1950s, accurate methods of measuring long distances (typically 30 to 50 km) were developed.

Chapter Two: Trilateration - How GPS Determines a Location
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77 Global Positioning System, a constellation of communications satellites that broadcast timing signals that can be converted into a distance measurement, permitting trilateration (surveying by knowing the sides of triangles). graphic elements p.

Additional surface gravity observations, results from the extension of triangulation and trilateration networks, and large amounts of Doppler and optical satellite data had become available since the development of WGS 60.

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Trilateration - Definition and Purpose of Trilateration in GPS
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This shape change could be defined by any one of many transformations, such as changing a map projection, trilateration to change the absolute position of specified nodes in the vector object, fitting a polynomial to a surface, ...

These control stations were often located on high mountains or hilltops in order to see between the stations, called "line-of sight", for measurements using triangulation, traverse and trilateration survey methods.

trilateration Method of surveying wherein the lengths of the triangle sides are measured, usually by electronic methods, and the angles are computed from the measured lengths. Compare with triangulation.

See also: Survey, Information, Network, Mapping, Surveying