GATE CE 2017 Set 1 — Question 18
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Geomatics Engineering → Distance & Angle Measurement → Electronic Distance Measurement
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Question
The accuracy of an Electronic Distance Measuring Instrument (EDMI) is specified as . Which one of the following statements is correct?
Correct answer
(B) a remains constant and b varies in proportion to the distance being measured.
Solution
In the EDMI accuracy specification , '' represents the constant instrumental error (independent of distance), and '' (parts per million) represents the distance-dependent error. The total error component from the second term is , which varies in proportion to the distance being measured.
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