SE212 Tutorial 13 1 Explain the GPS technology theory of wo

SE212 Tutorial # 13 1- Explain the GPS technology theory of work? 2- What applications could GPS be used for? 3- Write about the GPS technology stating its advantages and disadvantages compared wi land surveying technologies (such as total station)? 3- State the segments of the GPS system and their functions? 4- How many satellites we need to determine point coordinates using GPS receiver and why? 5- What are the Systematic errors that affect GPS observations?

Solution

1) WORKING OF GPS

The Global Positioning System is a space-based navigation system that provides location and time information in all weather conditions.It consists of 24 satellites (21+3 active spares) nominally orbiting the earth.The GPS system has currently has 27 satellites orbiting the earth as new ones are replacing older ones.

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2) APPLICATIONS OF GPS

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3) SEGMENTS OF THE GPS SYSTEM WITH THEIR FUNCTIONS

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4) NO. OF SATELLITES NEEDED

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