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how a GPS receiver antenna (i.e single antenna) tracks 4 satellites at once ?

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hcu

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Hello,

In gps, atlease 4 satellites information is needed to track out the user position on the earth. how the single anteena can able to perfrom acqisition and keeping on tracking next .

assume that out of 24 satellites like sv1 , sv2 ....... sv4 satellites. At some instant receiver got sv5, sv7, sv11, sv8, sv23 satellites on view. Now tell me how the things happens from here on with the single antenna.(unlike 4 antennas)
 

You are obviously missing a basic understanding of GPS operation. Satellites are using CDMA technique to share the same frequencies. https://en.wikipedia.org/wiki/Global_Positioning_System#Satellite_frequencies

A single antenna and RF frontend is sufficient to receive all satellites simultaneously, it's a matter of receiver design to decode the satellites simultaneously (preferred) or in sequence.
 

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