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・ Survey of production
・ Survey of Professional Forecasters
・ Survey on Household Income and Wealth
・ Survey Peak
・ Survey Peak Formation
・ Survey research
・ Survey Research Methods
・ Survey sampling
・ Survey Sampling International
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Surveying
・ Surveying and Spatial Sciences Institute
・ Surveying in early America
・ Surveykkallu
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・ Surveyor 2
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Surveying : ウィキペディア英語版
Surveying

Surveying or land surveying is the technique, profession, and science of determining the terrestrial or three-dimensional position of points and the distances and angles between them. A land surveying professional is called a land surveyor. These points are usually on the surface of the Earth, and they are often used to establish land maps and boundaries for ownership, locations like building corners or the surface location of subsurface features, or other purposes required by government or civil law, such as property sales.
Surveyors work with elements of mathematics (geometry and trigonometry), physics, engineering and the law. They use equipment like total stations, robotic total stations, GPS receivers, prisms, 3D scanners, radios, handheld tablets, digital levels, GIS and surveying software.
Surveying has been an element in the development of the human environment since the beginning of recorded history. The planning and execution of most forms of construction require it. It is also used in transport, communications, mapping, and the definition of legal boundaries for land ownership.
==ACSM definitions==
The American Congress on Surveying and Mapping (ACSM), defines surveying as ''the science and art of making all essential measurements to determine the relative position of points or physical and cultural details above, on, or beneath the surface of the Earth, and to depict them in a usable form, or to establish the position of points or details.''
Also per ACSM, the type of surveying known as "land surveying" is ''the detailed study or inspection, as by gathering information through observations, measurements in the field, questionnaires, or research of legal instruments, and data analysis in the support of planning, designing, and establishing of property boundaries. It involves the re-establishment of cadastral surveys and land boundaries based on documents of record and historical evidence, as well as certifying surveys (as required by statute or local ordinance) of subdivision plats or maps, registered land surveys, judicial surveys, and space delineation. Land surveying can include associated services such as mapping and related data accumulation, construction layout surveys, precision measurements of length, angle, elevation, area, and volume, as well as horizontal and vertical control surveys, and the analysis and utilization of land survey data.''

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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