Electronic Distance Measurement System

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Athletics

Updated On : 21 Oct, 2020

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Trivia

Geodimeter was the first ED device developed in the year 1948 in Sweden and Tellurometer was the second one, designed and developed in Africa in the year 1957.

Electronic Distance Measurement (E.D.M.) is an electronic device used for measuring the distance between two points through electromagnetic waves. Geodimeter, tellurometer or distomat are some of the electronic distance measurement instruments, introduced over the years. There has been a lot of improvement & development in EDM devices over a short span of years. These devices are used in numerous sports for measuring distances predominantly in track & field sports. EDM systems are mainly classified into three types based on carrier waves:

Microwave instruments can measure distances up to 150 Km.
Infrared wave instruments can measure distances up to 5 Km.
Lightwave instruments can measure distances up to 3 Km.

Features

These devices help in determining the winner in long jump competitions and other competitive events.
Electronic Distance Measurement devices help to take an exact measurement of distance with the help of light and radio waves.
EDM is also capable of measuring distances ranging from 0.50 km to 150 km.
The EDM instrument emits a laser or electromagnetic beam to a target which is reflected back to the unit and then processes the reflected signal to determine the distance travelled by the beam.

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