# Trilateration

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## trilateration

[trī‚lad·ə′rā·shən]
(engineering)
The measurement of a series of distances between points on the surface of the earth, for the purpose of establishing relative positions of the points in surveying.

## Trilateration

a method of determining geodetic control points. Trilateration consists in the construction of a chain or network of interconnected triangles in a given area and the measurement of all three sides of each triangle. The angles of the triangles and the coordinates of their vertices are determined by trigonometric computations. The sides of the triangles are measured with range-only radar or electrooptical range finders. Trilateration has the same purpose as triangulation.

## trilateration

A surveying method in which the lengths of all sides of a chain of triangles, polygons, or quadrilaterals (or any combination of them) are measured with an electronic instrument; the angles then may be computed from these field measurements.
References in periodicals archive ?
When a User Node (UN) enters an area, where it can obtain at least 3 ranging measurements to 3 distinct NN of a LRF, a trilateration algorithm can be performed and a solution for its relative position inside LRF can be obtained.
Your satnav's job is to use radio waves to locate the satellites, figure out the distance to each, and use this information to deduce its own location using a mathematical principle called 3D trilateration.
Location can then be derived through the processes of trilateration or multilateration.
These two distances for each stopping location were used to compute, by way of trilateration, the coordinates of the stopping location relative to the viewing location (see Fukusima, Loomis, & Da Silva, 1997).
This process is called trilateration and is used by the GPS unit's receiver to calculate the latitude and longitude position of this point.
This ranging system was based on a concept termed trilateration.
Spot elevations can be located by trilateration from two grid stations.
In synergy with, and yet in stark contrast to the article in this issue on digital mapping, As it Was details some of the history of hydrography and cartography, from the earliest form of sailing directions of the 95 to 130 AD era, known as periploi, to an underwater trilateration survey of offshore oil rig pipe lines carried out in 1976.
These include the most sophisticated automated laboratory workstations through the relatively large-scale global positioning systems that use trilateration, a geometric principle that lets the user find one location if the distance to another location is already known.
Trilateration is the determination of the relative position between points through the measurement of their separation distances.
Mobilsat is requesting two orbital positions (at about 85 and 125 degrees), saying the two will enable trilateration for mobile vehicle position location, accurate to within 0.

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