Question

After subjecting the EDM systems to the meteorological corrections, the possible accuracy range expected in short range and long range EDM systems respectively is

• A. 0.15 mm to 1 mm and 0.5 mm to 1.5 mm
• B. 1.5 mm to 10 mm and 5 mm to 15 mm
• C. 15 mm to 100 mm and 50 mm to 150 mm
• D. 150 mm to 1000 mm and 500 mm to 1500 mm

Hint:

After applying atmospheric corrections, short-range EDM is accurate up to 10 mm, and long-range EDM up to 15 mm.

Answer 1

The Correct Option is B

In Geo Engineering and Geo Informatics, EDM (Electronic Distance Measurement) systems are used for accurate distance measurement. These systems require meteorological corrections to adjust for atmospheric conditions such as temperature, pressure, and humidity, which can affect the accuracy of measurements.

When EDM systems are corrected for these meteorological factors, their accuracy can be categorized based on the range of operation:

• Short Range EDM Systems: After adjustment, these systems typically achieve an accuracy range between 1.5 mm to 10 mm.
• Long Range EDM Systems: For longer distances, the accuracy reduces slightly, maintaining a range between 5 mm to 15 mm.

This understanding is crucial for professionals relying on precise distance measurements in various engineering and geospatial tasks, ensuring reliable data collection for analysis and interpretation. The correct option reflecting these expected accuracy ranges is: 1.5 mm to 10 mm and 5 mm to 15 mm.