Surveying Wikipedia. A surveyor at work with a retroreflector used for distance measurement and orientation. Surveying or land surveying is the technique, profession, and science of determining the terrestrial or three dimensional positions 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 maps and boundaries for ownership, locations, such as 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 geometry, trigonometry, regression analysis, physics, engineering, metrology, programming languages, and the law. They use equipment, such as total stations, robotic total stations, GPS receivers, retroreflectors, 3. D scanners, radios, handheld tablets, digital levels, subsurface locators, drones, 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. It is an important tool for research in many other scientific disciplines. DefinitionseditThe 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. PIlBLkdnGg/hqdefault.jpg' alt='Leveling Program Surveying' title='Leveling Program Surveying' />The 2017 InfoAg Conference Program Guide and AtAGlance is available for viewing and download. The purchase of a registration will include a printed copy of each. HP 50g Surveying PAC Designed for the professional or field surveyor, adds layout programs, leveling programs and additional field programming. Define target. target synonyms, target pronunciation, target translation, English dictionary definition of target. An object, such as a padded disk with a. 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. The International Federation of Surveyors defines the function of surveying as 1A surveyor is a professional person with the academic qualifications and technical expertise to conduct one, or more, of the following activities to determine, measure and represent land, three dimensional objects, point fields and trajectories to assemble and interpret land and geographically related information,to use that information for the planning and efficient administration of the land, the sea and any structures thereon and,to conduct research into the above practices and to develop them. HistoryeditAncient surveyingedit. A plumb rule from the book Cassells Carpentry and Joinery. Surveying has occurred since humans built the first large structures. In ancient Egypt, a rope stretcher would use simple geometry to re establish boundaries after the annual floods of the Nile River. The almost perfect squareness and north south orientation of the Great Pyramid of Giza, built c. BC, affirm the Egyptians command of surveying. The Groma instrument originated in Mesopotamia early 1st millennium BC. The prehistoric monument at Stonehenge c. BC was set out by prehistoric surveyors using peg and rope geometry. The mathematician Liu Hui described ways of measuring distant objects in his work Haidao Suanjing or The Sea Island Mathematical Manual, published in 2. AD. The Romans recognized land surveying as a profession. They established the basic measurements under which the Roman Empire was divided, such as a tax register of conquered lands 3. AD. 4 Roman surveyors were known as Gromatici. In medieval Europe, beating the bounds maintained the boundaries of a village or parish. This was the practice of gathering a group of residents and walking around the parish or village to establish a communal memory of the boundaries. Young boys were included to ensure the memory lasted as long as possible. In England, William the Conqueror commissioned the Domesday Book in 1. It recorded the names of all the land owners, the area of land they owned, the quality of the land, and specific information of the areas content and inhabitants. It did not include maps showing exact locations. Modern surveyingeditAbel Foullon described a plane table in 1. Gunters chain was introduced in 1. English mathematician Edmund Gunter. It enabled plots of land to be accurately surveyed and plotted for legal and commercial purposes. Leonard Digges described a Theodolite that measured horizontal angles in his book A geometric practice named Pantometria 1. Joshua Habermel de Erasmus Habermehl created a theodolite with a compass and tripod in 1. Johnathon Sission was the first to incorporate a telescope on a theodolite in 1. In the 1. 8th century, modern techniques and instruments for surveying began to be used. Jesse Ramsden introduced the first precision theodolite in 1. It was an instrument for measuring angles in the horizontal and vertical planes. He created his great theodolite using an accurate dividing engine of his own design. Ramsdens theodolite represented a great step forward in the instruments accuracy. Total station surveying defined as the use of electronic survey equipment used to perform horizontal and vertical measurements in reference to a grid system e. GPS_GNSS__RTK_surveying_instrument.jpg' alt='Leveling Program Surveying' title='Leveling Program Surveying' />William Gascoigne invented an instrument that used a telescope with an installed crosshair as a target device, in 1. James Watt developed an optical meter for the measuring of distance in 1. Dutch mathematician Willebrord Snellius a. Snel van Royen introduced the modern systematic use of triangulation. In 1. 61. 5 he surveyed the distance from Alkmaar to Breda, approximately 7. He underestimated this distance by 3. The survey was a chain of quadrangles containing 3. Snell showed how planar formulae could be corrected to allow for the curvature of the earth. He also showed how to resection, or calculate, the position of a point inside a triangle using the angles cast between the vertices at the unknown point. These could be measured more accurately than bearings of the vertices, which depended on a compass. His work established the idea of surveying a primary network of control points, and locating subsidiary points inside the primary network later. Between 1. 73. 3 and 1. Jacques Cassini and his son Csar undertook the first triangulation of France. They included a re surveying of the meridian arc, leading to the publication in 1. France constructed on rigorous principles. By this time, triangulation methods were by then well established for local map making. A map of India showing the Great Trigonometrical Survey, produced in 1. Aleks Math Program Cheats. It was only towards the end of the 1. WIFI-Site-Survey_01.jpg' alt='Leveling Program Surveying' title='Leveling Program Surveying' />UNIT. BASIC MEASUREMENTS. Jeremy Evans, L. S. Psomas and Associates, Costa Mesa. Introduction. Philip Kissum in his book, Surveying Practice, defines surveying as. Abstract This article deals with general issues of airborne geophysical surveys with special emphasis on aerial magnetic surveys. Finale 2014 Mac Crack on this page. Under the airborne magnetometer. The History of Tidal Measurements in Canada. The history of tidal, current and water level surveying in Canada for navigational applications has always had a close. Leveling Program Surveying' title='Leveling Program Surveying' />In 1. General William Roys Ordnance Survey of Great Britain began the Principal Triangulation of Britain. The first Ramsden theodolite was built for this survey. The survey was finally completed in 1. The Great Trigonometric Survey of India began in 1. The Indian survey had an enormous scientific impact.