NTA-NET (UGC-NET) Geography (80) Cartography-GPS Components (Space, Ground Control and Receiver Segments) and Applications Study Material (Page 3 of 9)
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Global Positioning System: Reference Station, GPS Applications
Reference Station
Typical surveys use stationary reference receiver and mobile or stationary rover. GPS reference station operates 24 hours a day. Coordinates of this station are known before using GPS on any other machines. GPS reference station performs following two functions at the same time:
- Receive data from the satellites.
- Broadcast GPS data to the rovers.
Good reference site has following features:
- Clear view to the sky
- Proximity to working areas
- Absence of RF interference
- Minimal sources of multipath
- Continuous AC or DC power source
- Stable foundation & antennae mount
- Good accessibility
GPS Application…
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Digital Mapping and GPS: Data Collection, Applications of Digital Mapping
Digital mapping (or digital cartography) collects data, complies, and formats it into a virtual image. Its main aim is to generate maps with precise representations of any area, detailing major road arteries and points of interest. It permits distance calculations from one place to another…
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