What are the methods in identifying the elevation, specifically manual surveying?
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Manual surveying methods for identifying elevation involve traditional techniques that demand significant effort and time, requiring tedious identification and entry of elevation values . In such methods, surveyors manually identify elevation details on a contour in a reference map or topological map, which are later used for creating digital elevation models . Additionally, surveying instruments with optical wedges and electro-optical angle encoders are utilized for precise determination of elevation differences during surveying traverses, calculating elevation trigonometrically based on wedge diversion angles and distance measurements to targets . These manual surveying techniques are crucial for topographic mapping and determining three-dimensional coordinates of discrete points in scientific programs .
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| Papers (5) | Insight |
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| The method involves using a measuring device (e.g., tape measure) with a sighting and leveling device to measure the distance from an elevated location to the ground below, ensuring accurate elevation identification. | |
| Elevations were determined using conventional triangulation methods and tacheometric surveys in the topographic mapping, as detailed in the paper on topographic survey and cartography. | |
| The paper discusses a surveying instrument utilizing optical wedge, angle encoder, and EDM for precise elevation determination, not focusing on manual surveying methods. | |
Patent 20 Oct 2005 16 Citations | The paper discusses grade rods with sensors detecting motion of reference indicators for measuring elevation changes manually, providing a method for identifying elevation changes in surveying. |
20 Feb 2013 | Automated techniques, not manual surveying, are proposed for efficient elevation extraction and identification in GIS, reducing complexity and time required for elevation detail identification. |
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