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The chapter delves into the principles and applications of Electronic Distance Measurement (EDM), Total Stations, and Global Positioning System (GPS/GNSS) in modern surveying. It emphasizes the advantages these technologies bring in terms of accuracy, reduced manpower requirements, and efficiency in data collection. The chapter also outlines various components, working mechanics, classifications, and error sources associated with these instruments, enhancing students' understanding and capabilities in surveying applications.
Chapter 1514 sections
The chapter delves into the principles and applications of Electronic Distance Measurement (EDM), Total Stations, and Global Positioning System (GPS/GNSS) in modern surveying. It emphasizes the advantages these technologies bring in terms of accuracy, reduced manpower requirements, and efficiency in data collection. The chapter also outlines various components, working mechanics, classifications, and error sources associated with these instruments, enhancing students' understanding and capabilities in surveying applications.
EDM devices measure distances using electromagnetic waves, providing high accuracy for long distances.
Total Stations combine distance measurement and angle measurement, allowing for efficient field data collection.
GPS/GNSS technologies have revolutionized data collection by providing 3D coordinates directly without manual angular measurements.
A device that uses electromagnetic waves to measure distance from the instrument to a target.
An integrated instrument combining an electronic theodolite and EDM used for surveying that measures distances and angles.
A satellite-based navigation system that provides precise location and time information globally.
A measurement technique used in modern EDMs to determine distances by calculating the phase difference of emitted and received signals.
Total Questions
2
Estimated Time
4 min
Passing Score
70%
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