Question
Download Solution PDFDistance measured by instruments using radio or light waves, geodimeters, techeometry are comes under which measurement method?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Direct Distance measurement Method:
- The direct distance measurement method is defined as method distances that are actually measured on the surface of the earth using chains, tapes, perambulators, etc.
Indirect Distance measurement Method:
The indirect distance measurement method is defined as the method distances are measured indirectly, not in the field. With the help of the following methods:
1. Optical Method:
- In this method, the principle of optics is used for distance observations
2. Electronic Method:
- In this method, distances are measured by the propagation, reflection, and subsequent reception of either radio or light waves.
Tacheometry:
- Tacheometry is defined as an optical distance measurement method. The other names given to Tacheometry are Tachymetry of Telemetry.
- Tachiometry is a branch of angular surveying in which horizontal and vertical distances are obtained by optical means as opposed to the usual process of chain and tape.
- This is done with the help of two special types of instruments Transit-Theodolite and Stadia Rod.
Geodimeter:
- Geodimeter is an optical-electronic distance measurement instrument.
- It is based on the propagation of modulated light waves.
- It measures distance rapidly over long distances.
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