Two field receivers (reading distance and direction) are needed to establish the bird's position using triangulation from the ground.

Areas can only be mapped after using triangulation to determine exactly where the character is relative to other landmarks.

We used triangulation to cover many miles in a short time, and it usually took three hours for a "problem."

Simultaneous observation allowed accurate reconstruction of the flight path using triangulation.

Gunter's interest in geometry led him to develop a method of sea surveying using triangulation.

The system worked by using triangulation to pin-point the target.

Using expert triangulation, you can find where your sense of right and wrong has wandered.

He was perhaps the first Scottish map-maker actively to use triangulation in his work.

Other methods include the rangefinder, which uses triangulation to determine the distance.

With this information, the system can then use triangulation to calculate and map the computer's location.