3. opens new possibilities for one-person surveying, increased productivity, and improved personal safety. Advantages and disadvantages of online survey methodology are reviewed. An electrical or electronic signal can be amplified, filtered, multiplexed, sampled and measured. There are three primary types of commonly used surveyor instruments for EDM: Microwave instruments – These instruments use microwaves to take survey measurements. You will see how the elevation and the scale factor are used in the … The exploitation of electronic distance meters (EDM) in surveying practice, their rapid development in terms of construction, especially concerning the range and accuracy of measured distances, has led to the formation of a range of new methods and procedures in the area of measurement processing. DR is achieved using either of two EDM technology methods: Time of Flight (Pulsed Laser) or Phase Shift. Lecturer, ** Senior Technical Assistant Department of Mining Engineering, Indian School of Mines, Dhanbad - 826004 ABSTRACT Although surveying techniques have … Advantages of Electronic Measurement The advantages of an electronic measurement are 1. Surveying Equipment, Measurements and Errors 3.1 EQUIPMENT The procurement and maintenance of surveying equipment, tools and supplies are important parts of the Department’s survey effort. Bahuguna**, Dheeraj Kumar**, Sunil Kumar*** *Associate Professor, ** Sr. 10,000 distortion into any final surveying work product. Most of the quantities can be converted by transducers into the electrical or electronic signals. 1.8.3. The next article will cover each step of the computation to reduce an EDM measured distance to the corresponding grid length. 2. Hopefully, the myth has been dispelled and I have captured your attention. Depending on the type, laser tape measures can also work with much longer distances. MODERN SURVEYING EQUIPMENT Revolutionary changes have taken place in last few years in surveying instruments that are used for measuring level differences, distances and angles. Control Survey / Traverse: It is similar to any type of EDM Traverse. Proper care in the use, storage, transportation and adjustment of the equipment is a major factor in the successful completion of a survey. The primary advantage of using EDM devices for land survey measurements is the speed and accuracy with which they deliver readings. They have a range up … When direct reflex combines with robotic technology, the possibilities for one-person surveying increase even further. Definition of Traverse: – Traverse is the method of control survey in providing horizontal and vertical controls along a pre-defined route by means of establishing a series of connected lines joining the traverse stations. MODERN SURVEY INSTRUMENTS AND THEIR USE IN MINE SURVEYING P.P. 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