AGPS working without GPS

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Sep 6, 2013
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Hi,

I read that there are two types of AGPS.
1. Mobile Station Based : It will take almanac and ephemeris data from server and provide information to GPS module.
2. Mobile Station Assisted: where GPS module will send signal information (almanac and ephemeris data) to base station, where it will calculate the position and send back to module.

Question?
1. Can AGPS work, even when i am not receiving any signal or weak signal to GPS module?
2. which is best method of getting AGPS coordinates for every attempt and accurate one?

Regards
Learner
 

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