GPS or Global Positioning System, or GNSS Global Navigation Satellite System
Keywords : gps survey, gnss survey, drone survey, levelling survey, hills survey, hill survey, railway survey, new railway survey, Airborne lidar survey, Power transmission line, Route Planning , Line Construction, Optimization route,Catenary analysis, Identification of tower construction sites, Vegetation Enchoachment management, Change detection, As built survey..
GPS or Global Positioning System was developed and is maintained by the US Department of Defense. Since the introduction of GPS many other countries have developed similar satellite based navigation systems,
Surveying with GPS
Initially developed for military use, GPS is now part of everyday life. A few of the many things that GPS is used in include: mobile phones, in-car navigation and search and rescue equipment. But there is a wide variety of equipment and techniques that can be used for surveying.
GPS was rapidly adapted for surveying, as it can give a position (Latitude, Longitude and Height) directly, without the need to measure angles and distances between intermediate points. Survey control could now be established almost anywhere and it was only necessary to have a clear view of the sky so the signal from the GPS satellites could be received clearly.
GPS is similar in some ways to the Trilateration and EDM previously discussed, except that the known positions are now the GPS satellites (and their orbits) 20,000 km in space. The equipment and calculations are extremely complex, but for the user the process is generally very simple.
In the commonly available receivers, the GPS receiver almost instantly works out its position (Latitude, Longitude and Height) with an uncertainty of a few metres, from the data broadcast by the satellites. This data includes a description of the satellites changing position (its orbit) and the time the data was transmitted.
SURVEY SERVICES & TRAINING
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Minning survey
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UAV survey
Lidar survey
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Levelling survey
Railway Project survey
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Road survey
Township survey
Drone survey
Drone Aerial survey
Drone survey
GBS survey
GPS Control Survey
Engineering survey
Transmission Line survey
Dam and Lake survey
Layout survey
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FMB Drawing survey
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ividing and Platting of Land for City or County Planning Commissions
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Types of land surveying List Methods
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